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CN116273015A - Petroleum resin hydrogenation catalyst and its preparation method and application - Google Patents

Petroleum resin hydrogenation catalyst and its preparation method and application Download PDF

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Publication number
CN116273015A
CN116273015A CN202310205104.5A CN202310205104A CN116273015A CN 116273015 A CN116273015 A CN 116273015A CN 202310205104 A CN202310205104 A CN 202310205104A CN 116273015 A CN116273015 A CN 116273015A
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petroleum resin
slurry
hydrogenation catalyst
mixed
treatment
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Inventor
刘洋洋
郑云弟
吴宇杰
国海光
孙兵
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Shanghai Sunchem New Materials Technology Co ltd
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Shanghai Sunchem New Materials Technology Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/80Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with zinc, cadmium or mercury
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/60Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61Surface area
    • B01J35/615100-500 m2/g
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/60Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/63Pore volume
    • B01J35/6350.5-1.0 ml/g
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/60Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/64Pore diameter
    • B01J35/6472-50 nm
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00Chemical modification by after-treatment
    • C08F8/04Reduction, e.g. hydrogenation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/52Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Catalysts (AREA)

Abstract

The invention provides a petroleum resin hydrogenation catalyst which is applied to hydrogenation decolorization of dicyclopentadiene petroleum resin, wherein the petroleum resin hydrogenation catalyst comprises an active component and a carrier, the active component is nickel, zinc and magnesium, and the carrier is an alumina carrier; the catalyst comprises, by mass, 40-80% of nickel, 1-10% of zinc, 1-7% of magnesium and 10-58% of alumina carrier; the specific surface area of the petroleum resin hydrogenation catalyst is 200-400 square meters per gram, the pore volume is 0.5-1.0 cubic centimeter per gram, and the pore diameter is 10-100nm. The invention solves the problems of high price, low active component loading and non-uniformity of the existing petroleum resin hydrogenation catalyst. The invention also provides a preparation method and application of the petroleum resin hydrogenation catalyst.

Description

Petroleum resin hydrogenation catalyst and its preparation method and application
Technical Field
The invention relates to the technical field of petrochemical catalysts, in particular to a petroleum resin hydrogenation catalyst and a preparation method and application thereof.
Background
Petrochemical catalysts are an important product in the catalyst industry and are used in chemical processing in petrochemical product production. Petrochemical catalysts include hydrogenation catalysts, which are widely used in refining processes of raw materials and products, in addition to product production processes.
Dicyclopentadiene petroleum resins are typically produced from dicyclopentadiene by thermal polymerization, a thermoplastic hydrocarbon resin having a relatively low number average molecular weight. Dicyclopentadiene petroleum resin has good compatibility with other resins, is often used as a tackifier and a binder, and has been widely used in hot melt adhesives, pressure-sensitive adhesive tapes, ink printing and rubber. At present, a great part of dicyclopentadiene is derived from a carbon five fraction separation product of an ethylene byproduct produced by petroleum pyrolysis, and petroleum resin produced by dicyclopentadiene generally has the problems of deep hue, odor, high unsaturated hydrocarbon bond content, low thermal stability and oxidation stability and poor adhesive force, and is not well compatible with a plurality of resin matrixes, so that the use effect of the dicyclopentadiene as a tackifier is poor. Generally, hydrogenation is adopted to improve the performance of dicyclopentadiene petroleum resin, and the content of unsaturated hydrocarbon bonds can be effectively reduced through hydrogenation, so that the thermal stability and compatibility of the dicyclopentadiene petroleum resin are improved.
Chinese patent publication No. CN1189493a discloses a hydrogenation catalyst for preparing dicyclopentadiene hydrogenated petroleum resin, which has noble metal Pt, is expensive, and the softening point of the obtained petroleum resin is severely reduced; the Chinese patent with publication number of CN101157029A discloses a catalyst special for dicyclopentadiene hydrogenation and a preparation method thereof, which has noble metal Pt and is high in price and not suitable for large-scale production.
Chinese patent publication No. CN107252688A discloses a DCPD petroleum resin hydrogenation catalyst, its preparation method and application, and gamma-Al is added 2 O 3 Soaking the carrier in Ni-containing solution, and oven drying and roasting to disperse the active components unevenly on the carrier, or even to agglomerate and further to shadowResponding to the activity of the catalyst; chinese patent publication No. CN106268725A discloses hydrogenation catalyst of DCPD resin, preparation method and application, gamma-Al 2 O 3 Is a carrier, active components Pd, mo and Mn are carried on the carrier after molding step by step in a dipping mode, and the catalyst is prepared by drying and roasting, and adopts gamma-Al 2 O 3 As a carrier, the loading amount of the active metal is low, when the carrier is used for the hydrogenation reaction of DCPD petroleum resin, the hydrogenation rate is low, and the active metal is easy to run off.
Therefore, there is a need to develop a novel petroleum resin hydrogenation catalyst, and a preparation method and application thereof, so as to avoid the above-mentioned problems in the prior art.
Disclosure of Invention
The invention aims to provide a novel petroleum resin hydrogenation catalyst, a preparation method and application thereof, and solves the problems of high price, low active component loading and non-uniformity of the existing petroleum resin hydrogenation catalyst.
In order to achieve the above purpose, the invention provides a petroleum resin hydrogenation catalyst, which is applied to the hydrogenation and decoloration of dicyclopentadiene petroleum resin, wherein the petroleum resin hydrogenation catalyst comprises an active component and a carrier, the active component is nickel, zinc and magnesium, and the carrier is an alumina carrier;
the catalyst comprises, by mass, 40-80% of nickel, 1-10% of zinc, 1-7% of magnesium and 10-58% of alumina carrier;
the specific surface area of the petroleum resin hydrogenation catalyst is 200-400 square meters per gram, the pore volume is 0.5-1.0 cubic centimeter per gram, and the pore diameter is 10-100 nanometers.
The petroleum resin hydrogenation catalyst has the beneficial effects that: the petroleum resin hydrogenation catalyst comprises an active component and a carrier, wherein the active component is nickel, zinc and magnesium, the carrier is an alumina carrier, the content of zinc is 1-10% based on the mass percent of the petroleum resin hydrogenation catalyst, and the addition of the zinc and the content thereof ensure that the nickel and the magnesium are uniformly distributed on the surface of the alumina carrier, and the stability of the microcosmic appearance of the active site of the nickel on the alumina carrier can be maintained; the content of magnesium is 1-7% by mass of the petroleum resin hydrogenation catalyst, and the addition and content of magnesium improve the pH value of the surface of the petroleum resin hydrogenation catalyst, so that the hydrogenation activity and selectivity of the petroleum resin hydrogenation catalyst are improved, the occurrence of hydrogenation degradation side reaction is reduced, the petroleum resin hydrogenation catalyst does not contain noble metal, and the petroleum resin hydrogenation catalyst is low in cost and suitable for large-scale use. Therefore, the invention solves the problems of high price, low active component loading and non-uniformity of the existing petroleum resin hydrogenation catalyst.
Another object of the present invention is to provide a method for preparing a petroleum resin hydrogenation catalyst, comprising the steps of:
s0: providing a mixed source slurry and an aluminum source slurry, wherein the mixed source slurry comprises nickel, zinc and magnesium, and the volume ratio of the mixed source slurry to the aluminum source slurry is (2-4): 1;
s1: mixing the mixed source slurry and the aluminum source slurry to obtain mixed slurry, and sequentially performing first aging treatment, filtering washing treatment and drying treatment on the mixed slurry to obtain catalyst powder;
s2: and (3) roasting, reducing and passivating the catalyst powder in sequence to obtain the petroleum resin hydrogenation catalyst.
The preparation method of the petroleum resin hydrogenation catalyst has the beneficial effects that: the mixed source slurry comprises nickel, zinc and magnesium, and the volume ratio of the mixed source slurry to the aluminum source slurry is (2-4) 1, so that the nickel, zinc and magnesium in the mixed source slurry are more uniformly mixed with the aluminum source slurry, active components of nickel, zinc and magnesium are more uniformly distributed on an alumina carrier, meanwhile, the addition of zinc and the content thereof ensure that the nickel and magnesium are uniformly distributed on the surface of the alumina carrier, and the stability of the microcosmic appearance of the active sites of nickel on the alumina carrier can be maintained; the petroleum resin hydrogenation catalyst is obtained after the catalyst powder is subjected to roasting treatment, reduction treatment and passivation treatment in sequence, and the selectivity of the petroleum resin hydrogenation catalyst is improved through the reduction treatment and the passivation treatment.
Optionally, the preparation method of the aluminum source slurry comprises the following steps: introducing a mixed gas containing carbon dioxide into a sodium metaaluminate aqueous solution in a flowing state to carry out a gelling reaction until a gelling slurry with the pH value of 9.0-10.5 is obtained, carrying out second aging treatment on the gelling slurry to obtain an aged gelling slurry, and adding a pore-expanding agent into the aged gelling slurry to carry out pore-expanding treatment to obtain the aluminum source slurry.
Optionally, the molar ratio of the pore expanding agent to sodium metaaluminate in the sodium metaaluminate aqueous solution is (1-2): 1.
Optionally, the temperature of the reaming treatment is 70-150 ℃, the time of the reaming treatment is 12-24 hours, the temperature of the roasting treatment is 180-700 ℃, and the time of the roasting treatment is 2-8 hours.
Optionally, the temperature of the reduction treatment is 200-700 ℃, the time of the reduction treatment is 2-12 hours, and the air source of the reduction treatment is hydrogen or hydrogen-nitrogen mixed gas.
Optionally, the passivation treatment is performed at a temperature of 20-200 ℃, the passivation treatment time is 2-24 hours, the passivation treatment step is to treat the reduced catalyst powder by using a mixed gas containing nitrogen, and the mixed gas further comprises any one of air, oxygen or carbon dioxide.
Optionally, the volume flow rate of the mixed gas containing carbon dioxide is 1-4 standard meters per hour, the carbon dioxide accounts for 40-90% of the volume of the mixed gas containing carbon dioxide, and each liter of the aqueous solution of sodium metaaluminate contains 50-150 g of sodium metaaluminate.
Optionally, the preparation method of the mixed source slurry comprises the following steps: and performing coprecipitation treatment on the mixed solution by using an alkaline saline solution as a precipitator to obtain mixed source slurry, wherein the mixed solution is prepared by dissolving a nickel compound, a zinc compound and a magnesium compound in water.
It is still another object of the present invention to provide an application of the petroleum resin hydrogenation catalyst, the petroleum resin hydrogenation catalyst is placed in a high-pressure reaction kettle, dicyclopentadiene petroleum resin solution is added into the high-pressure reaction kettle to perform a hydrogenation and decoloration reaction with hydrogen, the temperature of the hydrogenation and decoloration reaction is 180-280 ℃, the pressure of the hydrogenation and decoloration reaction is 5-10 mpa, the dicyclopentadiene petroleum resin solution is obtained by dissolving dicyclopentadiene petroleum resin in an organic solvent, the mass ratio of the organic solvent to dicyclopentadiene is (0.001-0.2): 1, the organic solvent comprises at least one of alkane, cycloalkane and solvent oil, and the boiling point of the alkane is less than 250 ℃.
The petroleum resin hydrogenation catalyst has the beneficial effects that: the petroleum resin hydrogenation catalyst reduces side reactions in the hydrogenation and decoloration reaction of dicyclopentadiene petroleum resin, improves the selectivity of the hydrogenation and decoloration reaction, and improves the yield of dicyclopentadiene petroleum resin.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. Unless otherwise defined, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and the like means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof without precluding other elements or items.
After the petroleum resin is hydrogenated, the petroleum resin can become water white or transparent, and the stability is enhanced. In addition, hydrogenation may also improve adhesion, weatherability, and compatibility with EVA. The western famous company adopts a catalytic hydrogenation process to saturate unsaturated bonds in petroleum resin, and the hydrogenated petroleum resin with white or nearly colorless water is prepared. Hydrogenated petroleum resins are rapidly developing in developed countries such as the united states, and have been formed on a comparable production scale, resulting in good economic benefits.
The petroleum resin hydrogenation catalyst has almost no hydrogenation activity when the pore diameter of the carrier is too small, and the carrier has bimodal or multimodal pores with small pores of 10-30nm and large pores of about 100nm because the petroleum resin has certain molecular weight distribution. The selective auxiliary agent is used for regulating the pH value of the surface of the catalyst and is compounded with active components, so that the hydrogenation activity and selectivity of the catalyst are improved, the side reaction of hydrogenation degradation is reduced, and the yield of petroleum resin is improved.
The petroleum resin hydrogenation catalyst improves the sulfur poisoning resistance of the petroleum resin catalyst by adjusting the ratio of reduced nickel to total nickel on the petroleum resin catalyst, a loading method and adding IIB and IIA elements, inhibits the sintering of nickel metal and prolongs the service life of the petroleum resin hydrogenation catalyst.
The embodiment of the invention provides a petroleum resin hydrogenation catalyst, which is applied to hydrogenation decolorization of dicyclopentadiene petroleum resin, wherein the petroleum resin hydrogenation catalyst comprises an active component and a carrier, the active component is nickel, zinc and magnesium, and the carrier is an alumina carrier;
the catalyst comprises, by mass, 40-80% of nickel, 1-10% of zinc, 1-7% of magnesium and 10-58% of alumina carrier;
the specific surface area of the petroleum resin hydrogenation catalyst is 200-400 square meters per gram, the pore volume is 0.5-1.0 cubic centimeter per gram, and the pore diameter is 10-100 nanometers.
Specifically, the petroleum resin hydrogenation catalyst comprises an active component and a carrier, wherein the active component is nickel, zinc and magnesium, the carrier is an alumina carrier, the content of zinc is 1-10% based on the mass percent of the petroleum resin hydrogenation catalyst, and the addition of the zinc and the content thereof ensure that the nickel and the magnesium are uniformly distributed on the surface of the alumina carrier, and the stability of the microcosmic appearance of the active site of the nickel on the alumina carrier can be maintained; the content of magnesium is 1-7% by mass of the petroleum resin hydrogenation catalyst, and the addition and content of magnesium improve the pH value of the surface of the petroleum resin hydrogenation catalyst, so that the hydrogenation activity and selectivity of the petroleum resin hydrogenation catalyst are improved, the occurrence of hydrogenation degradation side reaction is reduced, the petroleum resin hydrogenation catalyst does not contain noble metal, and the petroleum resin hydrogenation catalyst is low in cost and suitable for large-scale use. Therefore, the invention solves the problems of high price, low active component loading and non-uniformity of the existing petroleum resin hydrogenation catalyst.
The embodiment of the invention provides a preparation method of a petroleum resin hydrogenation catalyst, which comprises the following steps:
s0: providing a mixed source slurry and an aluminum source slurry, wherein the mixed source slurry comprises nickel, zinc and magnesium, and the volume ratio of the mixed source slurry to the aluminum source slurry is (2-4): 1;
s1: mixing the mixed source slurry and the aluminum source slurry to obtain mixed slurry, and sequentially performing first aging treatment, filtering washing treatment and drying treatment on the mixed slurry to obtain catalyst powder;
s2: and (3) roasting, reducing and passivating the catalyst powder in sequence to obtain the petroleum resin hydrogenation catalyst.
Specifically, the mixed source slurry comprises nickel, zinc and magnesium, and the volume ratio of the mixed source slurry to the aluminum source slurry is controlled to be (2-4): 1, so that the nickel, zinc and magnesium in the mixed source slurry are more uniformly mixed with the aluminum source slurry, active components of nickel, zinc and magnesium are more uniformly distributed on an alumina carrier, meanwhile, the addition of zinc and the content thereof ensure that the nickel and magnesium are uniformly distributed on the surface of the alumina carrier, and the stability of the microcosmic appearance of the active site of nickel on the alumina carrier can be maintained; the petroleum resin hydrogenation catalyst is obtained after the catalyst powder is subjected to roasting treatment, reduction treatment and passivation treatment in sequence, and the selectivity of the petroleum resin hydrogenation catalyst is improved through the reduction treatment and the passivation treatment.
In some embodiments of the invention, the volume ratio of the mixed source slurry to the aluminum source slurry is any one of 2.5:1, 3:1, and 3.5:1.
In some embodiments of the invention, the nickel compound is nickel nitrate, the zinc compound is zinc nitrate, the magnesium compound is magnesium nitrate, and the alkaline brine solution is any one of sodium carbonate aqueous solution and sodium bicarbonate aqueous solution.
In some embodiments of the invention, the step of co-precipitating the mixed solution using the alkaline brine solution as a precipitant to obtain a mixed source slurry comprises: and (3) carrying out parallel flow mixing on the mixed solution and the alkaline saline solution at a flow rate of 10-40 ml/min respectively, wherein in the process of carrying out parallel flow mixing, the mixed solution obtained by parallel flow mixing is subjected to neutralization treatment with a neutralization temperature of 30-80 ℃ and a neutralization time of 20-100 min at a stirring rate of not lower than 300rpm, deionized water is used for regulating the pH value in the neutralization treatment to obtain a neutralization slurry with the pH value of 7.5-9.5, and then the neutralization slurry is subjected to third aging treatment to obtain the mixed source slurry.
In some embodiments of the present invention, the mixed solution contains 25-100 g of nickel oxide per liter of the mixed solution, 2-20 g of zinc oxide per liter of the mixed solution, and 2-20 g of magnesium oxide per liter of the mixed solution, wherein the volume ratio of the mixed solution to the aqueous solution of the alkaline salt is (1-5): 1.
In some embodiments of the invention, the alkaline brine solution has a pH of 10-14.
In some embodiments of the invention, the method of preparing an aluminum source slurry comprises: introducing a mixed gas containing carbon dioxide into a sodium metaaluminate aqueous solution in a flowing state to carry out a gelling reaction until a gelling slurry with the pH value of 9.0-10.5 is obtained, carrying out second aging treatment on the gelling slurry to obtain an aged gelling slurry, and adding a pore-expanding agent into the aged gelling slurry to carry out pore-expanding treatment to obtain the aluminum source slurry.
In some embodiments of the invention, the pore-expanding agent is ammonium bicarbonate.
In some embodiments of the invention, the aluminum source slurry may be selected from pseudo-boehmite slurries.
In some embodiments of the invention, the molar ratio of the pore-expanding agent to sodium metaaluminate in the aqueous sodium metaaluminate solution is (1-2): 1. In some embodiments, the molar ratio of the pore-expanding agent to sodium metaaluminate in the aqueous sodium metaaluminate solution is any one of 1.1:1, 1.2:1, 1.3:1, 1.4:1, 1.5:1, 1.6:1, 1.7:1, 1.8:1, 1.9:1.
In some embodiments of the invention, the temperature of the reaming process is 70-150 degrees celsius, the time of the reaming process is 12-24 hours, the temperature of the firing process is 180-700 degrees celsius, the time of the firing process is 2-8 hours,
in some embodiments of the invention, the temperature of the reduction treatment is 200-700 ℃, the time of the reduction treatment is 2-12 hours, and the air source of the reduction treatment is hydrogen or hydrogen-nitrogen mixture.
According to some embodiments of the invention, the passivation treatment temperature is 20-200 ℃, the passivation treatment time is 2-24 hours, and the passivation treatment step is to treat the reduced catalyst powder by using a mixed gas containing nitrogen, wherein the mixed gas also comprises any one of air, oxygen or carbon dioxide.
In some embodiments of the present invention, the volume flow rate of the mixed gas containing carbon dioxide is 1-4 standard meters per hour, the carbon dioxide accounts for 40-90% of the volume of the mixed gas containing carbon dioxide, and each liter of the aqueous solution of sodium metaaluminate contains 50-150 grams of sodium metaaluminate.
In some embodiments of the present invention, the temperature of the gelling reaction and the first aging process is between 30 and 65 degrees celsius, the sum of the time of the gelling reaction and the time of the first aging process is less than 90 minutes, and the time of the first aging process is between 20 and 40 minutes.
In some embodiments of the invention, the method of preparing a mixed source slurry comprises: and performing coprecipitation treatment on the mixed solution by using an alkaline saline solution as a precipitator to obtain mixed source slurry, wherein the mixed solution is prepared by dissolving a nickel compound, a zinc compound and a magnesium compound in water.
The embodiment of the invention provides an application of a petroleum resin hydrogenation catalyst, which is characterized in that the petroleum resin hydrogenation catalyst is placed in a high-pressure reaction kettle, dicyclopentadiene petroleum resin solution is added into the high-pressure reaction kettle to carry out hydrogenation and decoloration reaction with hydrogen, the temperature of the hydrogenation and decoloration reaction is 180-280 ℃, the pressure of the hydrogenation and decoloration reaction is 5-10 megapascals, the dicyclopentadiene petroleum resin solution is obtained by dissolving dicyclopentadiene petroleum resin in an organic solvent, the mass ratio of the organic solvent to dicyclopentadiene is (0.001-0.2): 1, the organic solvent comprises at least one of alkane, cycloalkane and solvent oil, and the boiling point of alkane is less than 250 ℃.
Specifically, the petroleum resin hydrogenation catalyst reduces side reactions in the hydrogenation and decoloration reaction of dicyclopentadiene petroleum resin, improves the selectivity of the hydrogenation and decoloration reaction, and improves the yield of dicyclopentadiene petroleum resin.
Some embodiments of the invention, the alkane comprises at least one of methane, ethane, propane, n-butane, n-pentane, hexane, heptane, n-octane, nonane, decane, undecane, dodecane, and tridecane; the cycloalkane includes at least one of cyclopentane, cyclohexane, cycloheptane, cyclooctane, cyclononane, cyclodecane, and cycloundecane.
In some embodiments of the present invention, the solvent oil refers to a light oil that dissolves, dilutes, washes and extracts certain substances in chemical production, and generally refers to a light petroleum fraction, so long as it is composed of alkanes, cycloalkanes, and small amounts of aromatics.
Example 1
Preparation of sample 1
Weighing 467 g of nickel nitrate hexahydrate, 14.6 g of zinc nitrate hexahydrate and 24.5 g of magnesium nitrate hexahydrate, dissolving the nickel nitrate hexahydrate, 14.6 g of zinc nitrate hexahydrate and 24.5 g of magnesium nitrate hexahydrate in water to prepare 2L of mixed solution, mixing 2L of mixed solution with 1L of sodium carbonate aqueous solution with the pH value of 10 in parallel flow at the flow rate of 10 ml/min, neutralizing the mixed solution obtained by parallel flow mixing at the stirring rate of 300rpm for 100 minutes at the neutralization temperature of 30 ℃, regulating the pH value by deionized water to obtain a neutralized slurry with the pH value of 7.5, and performing third aging treatment on the neutralized slurry at the temperature of 30 ℃ for 60 minutes to obtain mixed source slurry;
introducing 1 liter of sodium metaaluminate aqueous solution in a flowing state into the mixed gas containing carbon dioxide at a volume flow rate of 1 standard cubic meter per hour, performing a gelling reaction at a temperature of 30 ℃ for 60 minutes to obtain a gelling slurry with a pH value of 9.0, performing first aging treatment on the gelling slurry at the temperature of 65 ℃ for 25 minutes to obtain an aged gelling slurry, adding 57.8 grams of ammonium bicarbonate into the aged gelling slurry, and performing reaming treatment at 70 ℃ for 24 hours to obtain an aluminum source slurry, wherein the carbon dioxide accounts for 40 percent of the volume of the mixed gas containing carbon dioxide, and each liter of sodium metaaluminate aqueous solution contains 60 grams of sodium metaaluminate;
mixing 3 liters of mixed source slurry and 1 liter of aluminum source slurry at normal temperature to obtain mixed slurry, performing second aging treatment on the mixed slurry at 30 ℃ for 90 minutes, then performing filtration treatment until the content of sodium ions in filtrate is less than 1%, and finally performing drying treatment at 80 ℃ for 16 hours to obtain dry powder;
roasting the catalyst powder for 8 hours at 200 ℃, then carrying out reduction treatment for 8 hours at 250 ℃, finally carrying out passivation treatment for 12 hours at 20 ℃ by introducing nitrogen mixed air to obtain the petroleum resin hydrogenation catalyst, wherein the specific surface area of the petroleum resin hydrogenation catalyst is 300 square meters per gram, the pore volume is 0.5 cubic centimeters per gram, and the pore diameter is 20nm, and the petroleum resin hydrogenation catalyst is marked as sample 1.
Example 2
Preparation of sample 2
467 g of nickel nitrate hexahydrate, 73 g of zinc nitrate hexahydrate and 24.5 g of magnesium nitrate hexahydrate are weighed and dissolved in water to prepare 2 liters of mixed solution, the 2 liters of mixed solution and 1 liter of sodium carbonate aqueous solution with the pH value of 10 are mixed in parallel at the flow rate of 20 milliliters/minute, the mixed solution obtained by parallel flow mixing is subjected to neutralization treatment with the stirring rate of 400rpm at the temperature of 80 ℃ for the neutralization time of 20 minutes, the pH value of the neutralized slurry is regulated by deionized water to obtain neutralized slurry with the pH value of 9.5, and the neutralized slurry is subjected to third aging treatment at the temperature of 80 ℃ for 5 minutes to obtain mixed source slurry;
introducing 1 liter of sodium metaaluminate aqueous solution in a flowing state into the mixed gas containing carbon dioxide at a volume flow rate of 4 standard cubic meters per hour, performing a gelling reaction at a temperature of 65 ℃ for 50 minutes to obtain a gelling slurry with a pH value of 10.5, performing first aging treatment on the gelling slurry at the temperature of 65 ℃ for 35 minutes to obtain an aged gelling slurry, adding 57.8 grams of ammonium bicarbonate into the aged gelling slurry, and performing reaming treatment at 150 ℃ for 12 hours to obtain an aluminum source slurry, wherein the carbon dioxide accounts for 90 percent of the volume of the mixed gas containing carbon dioxide, and each liter of sodium metaaluminate aqueous solution contains 60 grams of sodium metaaluminate;
mixing 3 liters of mixed source slurry and 1 liter of aluminum source slurry at normal temperature to obtain mixed slurry, performing second aging treatment on the mixed slurry at 80 ℃ for 30 minutes, then performing filtration treatment until the content of sodium ions in filtrate is less than 1%, and finally performing drying treatment at 150 ℃ for 6 hours to obtain dry powder;
roasting the catalyst powder for 6 hours at 400 ℃, then reducing for 6 hours at 500 ℃, finally introducing nitrogen mixed air for passivation for 8 hours at 30 ℃ to obtain the petroleum resin hydrogenation catalyst, wherein the specific surface area of the petroleum resin hydrogenation catalyst is 320 square meters/gram, the pore volume is 0.6 cubic centimeters/gram, and the pore diameter is 30nm, and the petroleum resin hydrogenation catalyst is marked as sample 2.
Example 3
Preparation of sample 3
467 g of nickel nitrate hexahydrate, 73 g of zinc nitrate hexahydrate and 70 g of magnesium nitrate hexahydrate, and dissolving the nickel nitrate hexahydrate, the zinc nitrate hexahydrate and the 70 g of magnesium nitrate hexahydrate in water to prepare 2 liters of mixed solution, mixing the 2 liters of mixed solution with 1 liter of sodium carbonate aqueous solution with the pH value of 10 at the flow rate of 10 milliliters/minute in parallel flow, neutralizing the mixed solution obtained by parallel flow mixing at the stirring rate of 500rpm for the neutralization treatment with the neutralization temperature of 50 ℃ for 65 minutes, regulating the pH value by using deionized water to obtain a neutralized slurry with the pH value of 8.0, and carrying out third aging treatment on the neutralized slurry at the temperature of 50 ℃ for 30 minutes to obtain mixed source slurry;
introducing 1 liter of sodium metaaluminate aqueous solution in a flowing state into the mixed gas containing carbon dioxide at a volume flow rate of 2 standard cubic meters per hour, performing a gelling reaction at a temperature of 40 ℃ for 55 minutes to obtain a gelling slurry with a pH value of 9.0, performing first aging treatment on the gelling slurry at the temperature of 65 ℃ for 25 minutes to obtain an aged gelling slurry, adding 57.8 grams of ammonium bicarbonate into the aged gelling slurry, and performing reaming treatment at the temperature of 90 ℃ for 14 hours to obtain an aluminum source slurry, wherein the carbon dioxide accounts for 50 percent of the volume of the mixed gas containing carbon dioxide, and each liter of sodium metaaluminate aqueous solution contains 60 grams of sodium metaaluminate;
mixing 3 liters of mixed source slurry and 1 liter of aluminum source slurry at normal temperature to obtain mixed slurry, performing second aging treatment on the mixed slurry at 40 ℃ for 80 minutes, then performing filtration treatment until the content of sodium ions in filtrate is less than 1%, and finally performing drying treatment at 100 ℃ for 14 hours to obtain dry powder;
roasting the catalyst powder for 4 hours at 600 ℃, then reducing for 4 hours at 700 ℃, finally introducing nitrogen mixed air for passivation at 50 ℃ for 6 hours to obtain the petroleum resin hydrogenation catalyst, wherein the specific surface area of the petroleum resin hydrogenation catalyst is 320 square meters/gram, the pore volume is 0.7 cubic centimeters/gram, and the pore diameter is 30nm, and the petroleum resin hydrogenation catalyst is marked as sample 3.
Example 4
Preparation of sample 4
467 g of nickel nitrate hexahydrate, 73 g of zinc nitrate hexahydrate and 70 g of magnesium nitrate hexahydrate, and dissolving the nickel nitrate hexahydrate, the zinc nitrate hexahydrate and the 70 g of magnesium nitrate hexahydrate in water to prepare 2 liters of mixed solution, mixing the 2 liters of mixed solution with 1 liter of sodium carbonate aqueous solution with the pH value of 10 at the flow rate of 10 milliliters/minute in parallel flow, neutralizing the mixed solution obtained by parallel flow mixing at the stirring rate of 500rpm for the neutralization treatment of 70 ℃ for 35 minutes, regulating the pH value by using deionized water to obtain a neutralized slurry with the pH value of 8.5, and carrying out third aging treatment on the neutralized slurry at the temperature of 70 ℃ for 13 minutes to obtain mixed source slurry;
introducing 1 liter of sodium metaaluminate aqueous solution in a flowing state into the mixed gas containing carbon dioxide at a volume flow rate of 3 standard cubic meters per hour, performing a gelling reaction at a temperature of 50 ℃ for 50 minutes to obtain a gelling slurry with a pH value of 10.0, performing first aging treatment on the gelling slurry at the temperature of 50 ℃ for 30 minutes to obtain an aged gelling slurry, adding 96 grams of ammonium bicarbonate into the aged gelling slurry, and performing reaming treatment at 110 ℃ for 16 hours to obtain an aluminum source slurry, wherein the carbon dioxide accounts for 60 percent of the volume of the mixed gas containing carbon dioxide, and each liter of sodium metaaluminate aqueous solution contains 100 grams of sodium metaaluminate;
mixing 3 liters of mixed source slurry and 1 liter of aluminum source slurry at normal temperature to obtain mixed slurry, performing second aging treatment on the mixed slurry at 50 ℃ for 70 minutes, then performing filtration treatment until the content of sodium ions in filtrate is less than 1%, and finally performing drying treatment at 120 ℃ for 8 hours to obtain dry powder;
roasting the catalyst powder for 4 hours at 500 ℃, then carrying out reduction treatment for 4 hours at 500 ℃, finally carrying out passivation treatment for 10 hours at 20 ℃ by introducing nitrogen mixed air to obtain the petroleum resin hydrogenation catalyst, wherein the specific surface area of the petroleum resin hydrogenation catalyst is 320 square meters per gram, the pore volume is 0.8 cubic centimeters per gram, and the pore diameter is 30nm, and the petroleum resin hydrogenation catalyst is marked as sample 4.
Example 5
Preparation of sample 5
467 g of nickel nitrate hexahydrate, 73 g of zinc nitrate hexahydrate and 70 g of magnesium nitrate hexahydrate, and dissolving the nickel nitrate hexahydrate, the zinc nitrate hexahydrate and the 70 g of magnesium nitrate hexahydrate in water to prepare 2 liters of mixed solution, mixing the 2 liters of mixed solution with 1 liter of sodium carbonate aqueous solution with the pH value of 10 in parallel at the flow rate of 20 milliliters/minute, neutralizing the mixed solution obtained by the parallel mixing at the stirring rate of 500rpm for the neutralization treatment with the neutralization temperature of 55 ℃ for 70 minutes, regulating the pH value by using deionized water to obtain a neutralization slurry with the pH value of 9.0, and carrying out third aging treatment on the neutralization slurry at the temperature of 55 ℃ for 32 minutes to obtain mixed source slurry;
introducing 1 liter of sodium metaaluminate aqueous solution in a flowing state into the mixed gas containing carbon dioxide at a volume flow rate of 2.5 standard cubic meters per hour, performing a gelling reaction at 46 ℃ for 55 minutes to obtain a gelling slurry with a pH value of 9.0, performing first aging treatment on the gelling slurry at 46 ℃ for 30 minutes to obtain an aged gelling slurry, adding 145 grams of ammonium bicarbonate into the aged gelling slurry, and performing reaming treatment at 110 ℃ for 24 hours to obtain an aluminum source slurry, wherein the carbon dioxide accounts for 65% of the volume of the mixed gas containing carbon dioxide, and each liter of sodium metaaluminate aqueous solution contains 100 grams of sodium metaaluminate;
mixing 3 liters of mixed source slurry and 1 liter of aluminum source slurry at normal temperature to obtain mixed slurry, performing second aging treatment on the mixed slurry at 55 ℃ for 60 minutes, then performing filtration treatment until the content of sodium ions in filtrate is less than 1%, and finally performing drying treatment at 115 ℃ for 11 hours to obtain dry powder;
roasting the catalyst powder for 6 hours at 400 ℃, then reducing for 6 hours at 400 ℃, finally introducing nitrogen mixed air at 50 ℃ for passivation treatment for 4 hours to obtain the petroleum resin hydrogenation catalyst, wherein the specific surface area of the nickel-based hydrogenation catalyst is 360 square meters per gram, the pore volume is 1.0 cubic centimeter per gram, the pore diameter is 60nm, and the sample is marked as sample 5.
Comparative example 1
Comparative sample 1 preparation
Weighing 467 g of nickel nitrate hexahydrate and 24.5 g of magnesium nitrate hexahydrate, dissolving the nickel nitrate hexahydrate and the magnesium nitrate hexahydrate in water to prepare 2 liters of mixed solution, mixing the 2 liters of mixed solution with 1 liter of sodium carbonate aqueous solution with the pH value of 10 at the flow rate of 10 milliliters/minute in parallel flow, neutralizing the mixed solution obtained by parallel flow mixing at the stirring rate of 300rpm for a neutralization treatment with the neutralization temperature of 30 ℃ for 100 minutes, regulating the pH value by using deionized water to obtain a neutralization slurry with the pH value of 7.5, and carrying out third aging treatment on the neutralization slurry at the temperature of 30 ℃ for 60 minutes to obtain mixed source slurry;
introducing 1 liter of sodium metaaluminate aqueous solution in a flowing state into the mixed gas containing carbon dioxide at a volume flow rate of 1 standard cubic meter per hour, performing a gelling reaction at a temperature of 30 ℃ for 60 minutes to obtain a gelling slurry with a pH value of 9.0, performing first aging treatment on the gelling slurry at the temperature of 65 ℃ for 25 minutes to obtain an aged gelling slurry, adding 57.8 grams of ammonium bicarbonate into the aged gelling slurry, and performing reaming treatment at 70 ℃ for 24 hours to obtain an aluminum source slurry, wherein the carbon dioxide accounts for 40 percent of the volume of the mixed gas containing carbon dioxide, and each liter of sodium metaaluminate aqueous solution contains 60 grams of sodium metaaluminate;
mixing 3 liters of mixed source slurry and 1 liter of aluminum source slurry at normal temperature to obtain mixed slurry, performing second aging treatment on the mixed slurry at 30 ℃ for 90 minutes, then performing filtration treatment until the content of sodium ions in filtrate is less than 1%, and finally performing drying treatment at 80 ℃ for 16 hours to obtain dry powder;
roasting the catalyst powder for 8 hours at 200 ℃, then carrying out reduction treatment for 8 hours at 250 ℃, finally carrying out passivation treatment for 12 hours at 20 ℃ by introducing nitrogen mixed air to obtain the petroleum resin hydrogenation catalyst, wherein the specific surface area of the petroleum resin hydrogenation catalyst is 280 square meters per gram, the pore volume is 0.5 cubic centimeters per gram, and the pore diameter is 20nm, and the petroleum resin hydrogenation catalyst is recorded as a comparative sample 1.
Comparative example 2
Comparative sample 2 preparation
Weighing 467 g of nickel nitrate hexahydrate and 14.6 g of zinc nitrate hexahydrate, dissolving the nickel nitrate hexahydrate and 14.6 g of zinc nitrate hexahydrate in water to prepare 2 liters of mixed solution, mixing 2 liters of mixed solution with 1 liter of sodium carbonate aqueous solution with the pH value of 10 at the flow rate of 10 milliliters/minute in parallel, neutralizing the mixed solution obtained by parallel mixing at the stirring rate of 300rpm for the neutralization treatment with the neutralization temperature of 30 ℃ for 100 minutes, regulating the pH value by using deionized water to obtain a neutralized slurry with the pH value of 7.5, and carrying out third aging treatment on the neutralized slurry at the temperature of 30 ℃ for 60 minutes to obtain mixed source slurry;
introducing 1 liter of sodium metaaluminate aqueous solution in a flowing state into the mixed gas containing carbon dioxide at a volume flow rate of 1 standard cubic meter per hour, performing a gelling reaction at a temperature of 30 ℃ for 60 minutes to obtain a gelling slurry with a pH value of 9.0, performing first aging treatment on the gelling slurry at the temperature of 65 ℃ for 25 minutes to obtain an aged gelling slurry, adding 57.8 grams of ammonium bicarbonate into the aged gelling slurry, and performing reaming treatment at 70 ℃ for 24 hours to obtain an aluminum source slurry, wherein the carbon dioxide accounts for 40 percent of the volume of the mixed gas containing carbon dioxide, and each liter of sodium metaaluminate aqueous solution contains 60 grams of sodium metaaluminate;
mixing 3 liters of mixed source slurry and 1 liter of aluminum source slurry at normal temperature to obtain mixed slurry, performing second aging treatment on the mixed slurry at 30 ℃ for 90 minutes, then performing filtration treatment until the content of sodium ions in filtrate is less than 1%, and finally performing drying treatment at 80 ℃ for 16 hours to obtain dry powder;
roasting the catalyst powder for 8 hours at 200 ℃, then carrying out reduction treatment for 8 hours at 250 ℃, finally carrying out passivation treatment for 12 hours at 20 ℃ by introducing nitrogen mixed air to obtain the petroleum resin hydrogenation catalyst, wherein the specific surface area of the petroleum resin hydrogenation catalyst is 290 square meters per gram, the pore volume is 0.5 cubic centimeters per gram, and the pore diameter is 20nm, and the petroleum resin hydrogenation catalyst is recorded as a comparative sample 2.
Comparative example 3
Comparative sample 3 preparation
467 g of nickel nitrate hexahydrate, 73 g of zinc nitrate hexahydrate and 70 g of magnesium nitrate hexahydrate, and dissolving the nickel nitrate hexahydrate, the zinc nitrate hexahydrate and the 70 g of magnesium nitrate hexahydrate in water to prepare 2 liters of mixed solution, mixing the 2 liters of mixed solution with 1 liter of sodium carbonate aqueous solution with the pH value of 10 at the flow rate of 10 milliliters/minute in parallel flow, neutralizing the mixed solution obtained by parallel flow mixing at the stirring rate of 500rpm for the neutralization treatment of 70 ℃ for 35 minutes, regulating the pH value by using deionized water to obtain a neutralized slurry with the pH value of 8.5, and carrying out third aging treatment on the neutralized slurry at the temperature of 70 ℃ for 13 minutes to obtain mixed source slurry;
introducing 1 liter of sodium metaaluminate aqueous solution in a flowing state into the mixed gas containing carbon dioxide at a volume flow rate of 3 standard cubic meters per hour, performing a gel forming reaction at a temperature of 50 ℃ for 50 minutes to obtain a gel forming slurry with a pH value of 10.0, and performing first aging treatment on the gel forming slurry at the temperature of 50 ℃ for 30 minutes to obtain an aged gel forming slurry, wherein the carbon dioxide accounts for 60 percent of the volume of the mixed gas containing carbon dioxide, and each liter of sodium metaaluminate aqueous solution contains 100 grams of sodium metaaluminate;
mixing 3 liters of mixed source slurry and 1 liter of aluminum source slurry at normal temperature to obtain mixed slurry, performing second aging treatment on the mixed slurry at 50 ℃ for 70 minutes, then performing filtration treatment until the content of sodium ions in filtrate is less than 1%, and finally performing drying treatment at 120 ℃ for 8 hours to obtain dry powder;
roasting the catalyst powder for 4 hours at 500 ℃, then carrying out reduction treatment for 4 hours at 500 ℃, finally carrying out passivation treatment for 10 hours at 20 ℃ by introducing nitrogen mixed air to obtain the petroleum resin hydrogenation catalyst, wherein the specific surface area of the petroleum resin hydrogenation catalyst is 200 square meters per gram, the pore volume is 0.4 cubic centimeters per gram, the pore diameter is 6nm, and the petroleum resin hydrogenation catalyst is marked as a comparative sample 3.
Table 1 shows the composition and physical parameters of samples 1-5 and comparative samples 1-3. Wherein the specific surface area unit is square meter/g, the pore volume unit is cubic centimeter/g, the pore diameter is nanometer, and the nickel content, the zinc content, the magnesium content and the aluminum oxide content are all in mass percent.
TABLE 1
Figure BDA0004110545610000161
Figure BDA0004110545610000171
The conditions of the hydrogenation and decoloration reaction are as follows: the petroleum resin hydrogenation catalyst is placed in a high-pressure reaction kettle, dicyclopentadiene petroleum resin solution is added into the high-pressure reaction kettle to carry out hydrogenation and decoloration reaction with hydrogen, the temperature of the hydrogenation and decoloration reaction is 230 ℃, the pressure of the hydrogenation and decoloration reaction is 6 megapascals, the dicyclopentadiene petroleum resin solution is obtained by dissolving dicyclopentadiene petroleum resin in an organic solvent, the mass ratio of the organic solvent to dicyclopentadiene is 0.01:1, the organic solvent is a mixture of one or more hydrocarbons in alkanes, cycloalkanes and solvent oil, and the boiling point of alkane is less than 250 ℃.
The product color number, bromine number, softening point and product yield are compared with the hydrogenation effect of the petroleum resin hydrogenation catalyst by analyzing the product color number, bromine number, softening point and product yield.
Color number was analyzed using GB/T22295-2008 Gardner chromaticity.
The softening point of the product is analyzed by adopting a GB/T2294-2019 coking solid soft change point analysis method.
The bromine number is analyzed by adopting GB/T24138-2009 petroleum resin bromine number analysis standard, and the hydrogenation rate is calculated, wherein the calculation formula of the hydrogenation rate is as follows: (raw bromine number-product bromine number)/raw bromine number 100%.
The calculation formula of the product yield is as follows: product yield = product resin mass/raw resin mass 100%.
The nickel-based hydrogenation catalysts of samples 1-5 and comparative samples 1-3 were used for the hydrodecoloration of DCPD petroleum resins and the resulting effect experimental data are shown in Table 2.
TABLE 2
Figure BDA0004110545610000172
Figure BDA0004110545610000181
As can be seen from table 2, comparing sample 1 with comparative sample 1, the hydrogenation rate and yield of the product are both improved by adding zinc as an active component, and the addition of zinc can make nickel more uniformly distributed on the surface of the carrier and maintain the stability of the micro morphology of the active site of nickel on the carrier; as can be seen by comparing the sample 1 with the comparative sample 2, the softening point, hydrogenation rate and yield of the product are all improved by adding the magnesium as an active component, and the addition of magnesium is beneficial to adjusting the surface pH value of the nickel-based hydrogenation catalyst, improving the hydrogenation activity and selectivity of the nickel-based hydrogenation catalyst and reducing the production of byproducts with low molecular weight; as can be seen from comparison of the sample 1, the sample 5 and the comparison sample 3, the hydrogenation rate of the product can be improved by adding the pore-enlarging agent or increasing the proportion of the pore-enlarging agent, the pore-enlarging agent can increase the specific surface and the pore diameter of the catalyst, and the catalyst is more beneficial to the resin hydrogenation reaction and improves the hydrogenation rate.
The foregoing examples are illustrative only and serve to explain some features of the method of the invention. The appended claims are intended to claim the broadest possible scope and the embodiments presented herein are merely illustrative of selected implementations based on combinations of all possible embodiments. It is, therefore, not the intention of the applicant that the appended claims be limited by the choice of examples illustrating the features of the invention. Some numerical ranges used in the claims also include sub-ranges within which variations in these ranges should also be construed as being covered by the appended claims where possible.

Claims (10)

1. The petroleum resin hydrogenation catalyst is applied to hydrogenation decolorization of dicyclopentadiene petroleum resin, and is characterized by comprising an active component and a carrier, wherein the active component is nickel, zinc and magnesium, and the carrier is an alumina carrier;
the catalyst comprises, by mass, 40-80% of nickel, 1-10% of zinc, 1-7% of magnesium and 10-58% of alumina carrier;
the specific surface area of the petroleum resin hydrogenation catalyst is 200-400 square meters per gram, the pore volume is 0.5-1.0 cubic centimeter per gram, and the pore diameter is 10-100nm.
2. A method for preparing the petroleum resin hydrogenation catalyst according to claim 1, comprising the steps of:
s0: providing a mixed source slurry and an aluminum source slurry, wherein the mixed source slurry comprises nickel, zinc and magnesium, and the volume ratio of the mixed source slurry to the aluminum source slurry is (2-4): 1;
s1: mixing the mixed source slurry and the aluminum source slurry to obtain mixed slurry, and sequentially performing first aging treatment, filtering washing treatment and drying treatment on the mixed slurry to obtain catalyst powder;
s2: and (3) roasting, reducing and passivating the catalyst powder in sequence to obtain the petroleum resin hydrogenation catalyst.
3. The method for preparing a petroleum resin hydrogenation catalyst according to claim 2, wherein said method for preparing an aluminum source slurry comprises: introducing a mixed gas containing carbon dioxide into a sodium metaaluminate aqueous solution in a flowing state to carry out a gelling reaction until a gelling slurry with the pH value of 9.0-10.5 is obtained, carrying out second aging treatment on the gelling slurry to obtain an aged gelling slurry, and adding a pore-expanding agent into the aged gelling slurry to carry out pore-expanding treatment to obtain the aluminum source slurry.
4. The method for preparing a petroleum resin hydrogenation catalyst according to claim 3, wherein the molar ratio of said pore-expanding agent to sodium metaaluminate in said aqueous sodium metaaluminate solution is (1-2): 1.
5. The method for preparing a petroleum resin hydrogenation catalyst according to claim 3, wherein the temperature of said reaming is 70-150 ℃, the time of said reaming is 12-24 hours, the temperature of said roasting is 180-700 ℃, and the time of said roasting is 2-8 hours.
6. The method for preparing a petroleum resin hydrogenation catalyst according to claim 2, wherein the temperature of the reduction treatment is 200-700 ℃, the time of the reduction treatment is 2-12 hours, and the gas source of the reduction treatment is hydrogen or hydrogen-nitrogen mixture.
7. The method for preparing a petroleum resin hydrogenation catalyst according to claim 2, wherein the temperature of said passivation treatment is 20-200 degrees celsius, the time of said passivation treatment is 2-24 hours, said passivation treatment step is to treat the reduced catalyst powder with a mixed gas containing nitrogen, said mixed gas further comprising any one of air, oxygen or carbon dioxide.
8. The method for preparing a petroleum resin hydrogenation catalyst according to claim 3, wherein the volume flow rate of said mixed gas containing carbon dioxide is 1-4 cm/hr, the volume percentage of carbon dioxide in said mixed gas containing carbon dioxide is 40-90%, and 50-150 g of said sodium metaaluminate is contained per liter of said aqueous sodium metaaluminate solution.
9. The method for preparing a petroleum resin hydrogenation catalyst according to claim 2, wherein said method for preparing a mixed source slurry comprises: and performing coprecipitation treatment on the mixed solution by using an alkaline saline solution as a precipitator to obtain mixed source slurry, wherein the mixed solution is prepared by dissolving a nickel compound, a zinc compound and a magnesium compound in water.
10. The use of the petroleum resin hydrogenation catalyst according to claim 1, wherein the petroleum resin hydrogenation catalyst is placed in a high-pressure reaction kettle, dicyclopentadiene petroleum resin solution is added into the high-pressure reaction kettle to carry out hydrogenation and decolorization reaction with hydrogen, the temperature of the hydrogenation and decolorization reaction is 180-280 ℃, the pressure of the hydrogenation and decolorization reaction is 5-10 megapascals, the dicyclopentadiene petroleum resin solution is obtained by dissolving dicyclopentadiene petroleum resin in an organic solvent, the mass ratio of the organic solvent to dicyclopentadiene is (0.001-0.2): 1, the organic solvent comprises at least one of alkane, cycloalkane and solvent oil, and the boiling point of the alkane is less than 250 ℃.
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