JPS56126437A - Catalyst for purification of exhaust gas of automobile - Google Patents
Catalyst for purification of exhaust gas of automobileInfo
- Publication number
- JPS56126437A JPS56126437A JP2963780A JP2963780A JPS56126437A JP S56126437 A JPS56126437 A JP S56126437A JP 2963780 A JP2963780 A JP 2963780A JP 2963780 A JP2963780 A JP 2963780A JP S56126437 A JPS56126437 A JP S56126437A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- waste gas
- nox
- purification
- automobile
- 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.)
- Granted
Links
- 239000003054 catalyst Substances 0.000 title abstract 9
- 238000000746 purification Methods 0.000 title abstract 4
- 239000002912 waste gas Substances 0.000 abstract 5
- 239000000446 fuel Substances 0.000 abstract 2
- 229910052878 cordierite Inorganic materials 0.000 abstract 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 abstract 1
- 238000005470 impregnation Methods 0.000 abstract 1
Abstract
PURPOSE: To improve purification performance for CO and NOx at a wide air-to- fuel ratio range by making Pt and Rh, which are active components, carried on a carrier at specific concentrations in a monolith type 3-element type catalyst for purification of waste gas of automobiles.
CONSTITUTION: A monolith type 3-element catalyst A is disposed in a catalyst device 2 provided in the exhaust pipe 1 of the engine of an automobile. This catalyst A is prepd. by impregnating Pt and Rh on a catalyst carrier 3 of cordierite composition, and changing the amount of impregnation of Pt so as to be made rich on the waste gas inlet 3a side of the catalyst carrier 3 and lean on the waste gas outlet side 3b. Also, that of Rh is so changed and carried as to be made conversely lean or nil on the waste gas inlet side 3a and be rich on the waste gas outlet side 3b. As a 3-element catalyst for HC, CO and NOx, this catalyst excells particularly in purification performance for CO and NOx and permits the expansion of the air-to-fuel ratio to be used.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2963780A JPS56126437A (en) | 1980-03-08 | 1980-03-08 | Catalyst for purification of exhaust gas of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2963780A JPS56126437A (en) | 1980-03-08 | 1980-03-08 | Catalyst for purification of exhaust gas of automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56126437A true JPS56126437A (en) | 1981-10-03 |
| JPS6357096B2 JPS6357096B2 (en) | 1988-11-10 |
Family
ID=12281590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2963780A Granted JPS56126437A (en) | 1980-03-08 | 1980-03-08 | Catalyst for purification of exhaust gas of automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56126437A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4774217A (en) * | 1985-06-13 | 1988-09-27 | Nippondenso Co., Ltd. | Catalytic structure for cleaning exhaust gas |
| JPS63168032U (en) * | 1987-04-22 | 1988-11-01 | ||
| JPH01199646A (en) * | 1987-10-21 | 1989-08-11 | Soc Fr Prod Catalyse (Procatalyse) | Catalyst for treating exhaust gas of internal combustion engine and its production |
| EP0390059A2 (en) * | 1989-03-28 | 1990-10-03 | Mitsubishi Petrochemical Co., Ltd. | Process for purifying exhaust gas and catalyst molded article for use in it |
| JPH02293048A (en) * | 1989-04-19 | 1990-12-04 | Engelhard Corp | Platinum catalyst carried by ceria carrier containing palladium and mass of catalyst containing said catalyst |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53127390A (en) * | 1977-04-14 | 1978-11-07 | Nissan Motor Co Ltd | Impregnating method for catalyst metal compounds of monolithic catalyst |
-
1980
- 1980-03-08 JP JP2963780A patent/JPS56126437A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53127390A (en) * | 1977-04-14 | 1978-11-07 | Nissan Motor Co Ltd | Impregnating method for catalyst metal compounds of monolithic catalyst |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4774217A (en) * | 1985-06-13 | 1988-09-27 | Nippondenso Co., Ltd. | Catalytic structure for cleaning exhaust gas |
| JPS63168032U (en) * | 1987-04-22 | 1988-11-01 | ||
| JPH0522261Y2 (en) * | 1987-04-22 | 1993-06-08 | ||
| JPH01199646A (en) * | 1987-10-21 | 1989-08-11 | Soc Fr Prod Catalyse (Procatalyse) | Catalyst for treating exhaust gas of internal combustion engine and its production |
| EP0390059A2 (en) * | 1989-03-28 | 1990-10-03 | Mitsubishi Petrochemical Co., Ltd. | Process for purifying exhaust gas and catalyst molded article for use in it |
| US5087430A (en) * | 1989-03-28 | 1992-02-11 | Mitsubishi Petrochemical Co., Ltd. | Process for purifying exhaust gas |
| JPH02293048A (en) * | 1989-04-19 | 1990-12-04 | Engelhard Corp | Platinum catalyst carried by ceria carrier containing palladium and mass of catalyst containing said catalyst |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6357096B2 (en) | 1988-11-10 |
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