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UST864008I4 - Defensive publication - Google Patents

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Publication number
UST864008I4
UST864008I4 US864008DH UST864008I4 US T864008 I4 UST864008 I4 US T864008I4 US 864008D H US864008D H US 864008DH US T864008 I4 UST864008 I4 US T864008I4
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US
United States
Prior art keywords
defensive publication
catalysts
catalyst
molybdenum
niobium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of UST864008I4 publication Critical patent/UST864008I4/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/90—Regeneration or reactivation
    • B01J23/92—Regeneration or reactivation of catalysts comprising metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/16—Reducing
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C253/00—Preparation of carboxylic acid nitriles
    • C07C253/24—Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons
    • C07C253/26—Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/584—Recycling of catalysts

Definitions

  • the reactivation or preconditioning is directed to oxidation and ammoxidation catalysts used in the preparation of acids, anhydrides and nitriles from hydrocarbons such as propylene and p-xylene.
  • the treated catalysts contain the oxides of niobium and molybdenum or the oxides of arsenic, niobium and molybdenum.
  • the catalysts may be supported on silica. It is also expected that the above compositions in which tantalum is used to replace niobium may be reactivated.
  • the catalytic metals exist in an oxidation state above zero.
  • Molybdenum may be present in the form of a heteropolyaci-d such as ceri-12-molybdic acid.
  • the gas used for the catalyst reduction may be any easily oxidizable material.
  • olefins and long chain n-hydrocarbons may be used.
  • Propylene is the preferred reducing gas.
  • Ammonia or hydrogen may also be employed as a reducing gas.
  • the reduction treatment is carried out at temperatures between 350 C. and 650 C,
  • the catalyst may additionally be treated with AS203.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Catalysts (AREA)

Description

ye DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Apr. 11, 1968, 849 CG. 1221. Identiflcation is by serial number of the application and the heading indicates the number of pages of specification, including claims, and of sheets of drawing contained in the application as originally filed. The file of this application is available to the public for inspection; reproduction may be purchased for 30 cents per sheet.
Applications published under the Defensive Publication Program have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED JULY 15, 1969 784 946 REACTIVATION OFOXIDE CATALYSTS Warren E. Campbell, P.0. Box 511, Kingsport, Tenn. 37662 Filed Dec. 18, 1968. Published July 15, 1969 Int. Cl. B01 11/66; C07c 51/16, 121/02 US. Cl. 2s2 411 No Drawing. 6 Pages Specification Catalytic activity of a metal-oxide catalyst, which has been deactivated by excessive heat treatment in the presence' of an oxygen-containing gas, can be restored by heating the deactivated catalyst at high temperature with a reducing gas or gaseous mixture. More specifically the reactivation or preconditioning is directed to oxidation and ammoxidation catalysts used in the preparation of acids, anhydrides and nitriles from hydrocarbons such as propylene and p-xylene. In particular the treated catalysts contain the oxides of niobium and molybdenum or the oxides of arsenic, niobium and molybdenum. The catalysts may be supported on silica. It is also expected that the above compositions in which tantalum is used to replace niobium may be reactivated. The catalytic metals exist in an oxidation state above zero. Molybdenum may be present in the form of a heteropolyaci-d such as ceri-12-molybdic acid. The gas used for the catalyst reduction may be any easily oxidizable material. For example, olefins and long chain n-hydrocarbons may be used. Propylene is the preferred reducing gas. Ammonia or hydrogen may also be employed as a reducing gas. The reduction treatment is carried out at temperatures between 350 C. and 650 C, The catalyst may additionally be treated with AS203.
US864008D 1968-12-18 1968-12-18 Defensive publication Pending UST864008I4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78494668A 1968-12-18 1968-12-18

Publications (1)

Publication Number Publication Date
UST864008I4 true UST864008I4 (en) 1969-07-15

Family

ID=25134017

Family Applications (1)

Application Number Title Priority Date Filing Date
US864008D Pending UST864008I4 (en) 1968-12-18 1968-12-18 Defensive publication

Country Status (1)

Country Link
US (1) UST864008I4 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4181628A (en) 1976-05-21 1980-01-01 Lonza, Ltd. Catalyst for oxidation reactions and process for its production
US4659689A (en) 1986-03-05 1987-04-21 The Standard Oil Company Method of preparation of high active phase (AMM)oxidation catalysts with improved performance and attrition resistance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4181628A (en) 1976-05-21 1980-01-01 Lonza, Ltd. Catalyst for oxidation reactions and process for its production
US4659689A (en) 1986-03-05 1987-04-21 The Standard Oil Company Method of preparation of high active phase (AMM)oxidation catalysts with improved performance and attrition resistance

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