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JPS5447889A - Catalyst for purification of internal combustion engine exhaust gas - Google Patents

Catalyst for purification of internal combustion engine exhaust gas

Info

Publication number
JPS5447889A
JPS5447889A JP11431477A JP11431477A JPS5447889A JP S5447889 A JPS5447889 A JP S5447889A JP 11431477 A JP11431477 A JP 11431477A JP 11431477 A JP11431477 A JP 11431477A JP S5447889 A JPS5447889 A JP S5447889A
Authority
JP
Japan
Prior art keywords
alumina
catalyst
carrier
alpha
exhaust gas
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
JP11431477A
Other languages
Japanese (ja)
Inventor
Ryuzo Hori
Hiroo Kinoshita
Toru Suzaki
Yasushi Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP11431477A priority Critical patent/JPS5447889A/en
Publication of JPS5447889A publication Critical patent/JPS5447889A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/16—Oxygen

Landscapes

  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

PURPOSE:To provide a highly heat resistant catalyst having a long life used in simultaneous removal of NOx CO and HC, and obtd. by supporting Rh or Rh and one or more kinds of other platinum group metals, and one or more kinds of metals showing a plurality of oxidized states on a transitive alumina carrier in which at least alpha-alumina is detected through X-rays. CONSTITUTION:alpha-alumina base carrier or activated alumina with a relatively large specific area is calcined to prepare a spherical transitive alumina carrier in which at least alpha-alumina is detected through X-rays. On this carrier are then supported 0.01g of Rh to 1l of packed catalyst or more than 0.02g of Rh and other platinum group metals, and more than 0.01mol of O2 storage components such as Ce, Fe, Cu and Co. The resulting catalyst is used in simultaneous removal of NOx, CO, HC, etc. contained in exhaust gas of car esp. equipped with an internal combustion engine and it has superior heat resistance.
JP11431477A 1977-09-22 1977-09-22 Catalyst for purification of internal combustion engine exhaust gas Pending JPS5447889A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11431477A JPS5447889A (en) 1977-09-22 1977-09-22 Catalyst for purification of internal combustion engine exhaust gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11431477A JPS5447889A (en) 1977-09-22 1977-09-22 Catalyst for purification of internal combustion engine exhaust gas

Publications (1)

Publication Number Publication Date
JPS5447889A true JPS5447889A (en) 1979-04-14

Family

ID=14634746

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11431477A Pending JPS5447889A (en) 1977-09-22 1977-09-22 Catalyst for purification of internal combustion engine exhaust gas

Country Status (1)

Country Link
JP (1) JPS5447889A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59127649A (en) * 1983-01-05 1984-07-23 Toyota Motor Corp Catalyst for purifying exhaust gas

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51104488A (en) * 1975-03-13 1976-09-16 Toyota Motor Co Ltd Shokubaitantai oyobi shokubai
JPS51104491A (en) * 1975-03-13 1976-09-16 Nissan Motor
JPS5227088A (en) * 1975-08-27 1977-03-01 Engelhard Min & Chem Catalysts for controlling pollutants in exhaust gases and utilization thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51104488A (en) * 1975-03-13 1976-09-16 Toyota Motor Co Ltd Shokubaitantai oyobi shokubai
JPS51104491A (en) * 1975-03-13 1976-09-16 Nissan Motor
JPS5227088A (en) * 1975-08-27 1977-03-01 Engelhard Min & Chem Catalysts for controlling pollutants in exhaust gases and utilization thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59127649A (en) * 1983-01-05 1984-07-23 Toyota Motor Corp Catalyst for purifying exhaust gas

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