JPS54133488A - Exhaust gas cleaning catalyst - Google Patents
Exhaust gas cleaning catalystInfo
- Publication number
- JPS54133488A JPS54133488A JP4081878A JP4081878A JPS54133488A JP S54133488 A JPS54133488 A JP S54133488A JP 4081878 A JP4081878 A JP 4081878A JP 4081878 A JP4081878 A JP 4081878A JP S54133488 A JPS54133488 A JP S54133488A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- cpd
- carrier
- alkali metal
- impregnated
- 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
Abstract
PURPOSE: To provide a ternary catalyst with a broad wind width and superior durability which catalyst is obtd. by supporting Pt, Rh, W and an alkali metal chloride on a carrier and is capable of cleaning harmful components such as NOx, CO and HC in exhaust gas at the same time.
CONSTITUTION: A carrier such as spherical alumina is impregnated with a soln. of a W cpd. such as ammonium paratungstate, dried, calcined in air at 500W800°C to support W, and further impregnated with a mixed soln. of a Pt cpd. such as chloroplatinic acid, a Rh cpd. such as rhodium chloride and an alkali metal chloride such as NaCl. The impregnated catalyst is then evaporated to dryness, calcined in air at 200°CWbelow the m.p. of the alkali metal chloride, and reduced with H2 or the like to prepare the desired catalyst. The amt. of Pt and Rh supported is 0.01W5 wt% to the amt. of the carrier, and that of NaCl 0.1W30 wt%. The atomic ratio of W:(Pt+Rh) is 1W100:1.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53040818A JPS5845288B2 (en) | 1978-04-08 | 1978-04-08 | Exhaust gas purification catalyst |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53040818A JPS5845288B2 (en) | 1978-04-08 | 1978-04-08 | Exhaust gas purification catalyst |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54133488A true JPS54133488A (en) | 1979-10-17 |
JPS5845288B2 JPS5845288B2 (en) | 1983-10-08 |
Family
ID=12591227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53040818A Expired JPS5845288B2 (en) | 1978-04-08 | 1978-04-08 | Exhaust gas purification catalyst |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5845288B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0056729A2 (en) * | 1981-01-20 | 1982-07-28 | Johnson Matthey Public Limited Company | Catalysts |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0350145Y2 (en) * | 1985-05-23 | 1991-10-25 | ||
CA2151859C (en) | 1994-06-17 | 2002-02-26 | Satoshi Inui | Catalyst for purifying exhaust gas from lean burn engine and method for purification |
-
1978
- 1978-04-08 JP JP53040818A patent/JPS5845288B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0056729A2 (en) * | 1981-01-20 | 1982-07-28 | Johnson Matthey Public Limited Company | Catalysts |
EP0056729A3 (en) * | 1981-01-20 | 1982-08-11 | Johnson Matthey Public Limited Company | Catalysts |
Also Published As
Publication number | Publication date |
---|---|
JPS5845288B2 (en) | 1983-10-08 |
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