JPS6470131A - Catalyst for purifying exhaust gas - Google Patents
Catalyst for purifying exhaust gasInfo
- Publication number
- JPS6470131A JPS6470131A JP62228074A JP22807487A JPS6470131A JP S6470131 A JPS6470131 A JP S6470131A JP 62228074 A JP62228074 A JP 62228074A JP 22807487 A JP22807487 A JP 22807487A JP S6470131 A JPS6470131 A JP S6470131A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- exhaust gas
- carbon
- nox
- nickel
- 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
Links
- 239000003054 catalyst Substances 0.000 title abstract 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 4
- 229910052799 carbon Inorganic materials 0.000 abstract 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 4
- 239000007789 gas Substances 0.000 abstract 3
- 229910052759 nickel Inorganic materials 0.000 abstract 3
- 230000002829 reductive effect Effects 0.000 abstract 3
- 229910052783 alkali metal Inorganic materials 0.000 abstract 2
- 150000001340 alkali metals Chemical class 0.000 abstract 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 abstract 2
- 150000001342 alkaline earth metals Chemical class 0.000 abstract 2
- 229910052697 platinum Inorganic materials 0.000 abstract 2
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 239000011247 coating layer Substances 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000002309 gasification Methods 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 125000001183 hydrocarbyl group Chemical group 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/18—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an adsorber or absorber
-
- 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
- F01N2570/12—Hydrocarbons
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
PURPOSE:To reduce NOx contained in exhaust gas without using any reducing substance by providing both a first catalyst comprising alkali metal, alkaline earth metal, platinum and nickel, and a second catalyst for purifying NOx in the downstream side thereof. CONSTITUTION:In a first catalyst 1, carbon in exhaust gas is allowed to react with steam by catalytic action of platinum and gaseous hydrogen and gaseous carbon monoxide are generated and thereby the exhaust gas is made a reductive atmosphere. Further, the promotion of decomposition of hydrocarbon, storage effect of oxygen and deposition control of carbon are made by nickel carried on the coating layer of the first catalyst 1. Furthermore, since at least one kind of alkali metal or alkaline earth metal is carried on the first catalyst 1, gasification of carbon due to steam is promoted and carbon is removed from the surface of nickel. Therefore, NOx is effectively reduced by a second catalyst 2 in the downstream side and NOx amount is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62228074A JPS6470131A (en) | 1987-09-10 | 1987-09-10 | Catalyst for purifying exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62228074A JPS6470131A (en) | 1987-09-10 | 1987-09-10 | Catalyst for purifying exhaust gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6470131A true JPS6470131A (en) | 1989-03-15 |
Family
ID=16870786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62228074A Pending JPS6470131A (en) | 1987-09-10 | 1987-09-10 | Catalyst for purifying exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6470131A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997047863A1 (en) * | 1996-06-08 | 1997-12-18 | Ford Motor Company Limited | Catalytic converter for a lean burn engine |
| JP2003010646A (en) * | 2001-07-05 | 2003-01-14 | Toyota Central Res & Dev Lab Inc | Apparatus and method for cleaning diesel exhaust |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62106845A (en) * | 1985-11-05 | 1987-05-18 | Toyota Motor Corp | Catalyst for purifying exhaust gas |
-
1987
- 1987-09-10 JP JP62228074A patent/JPS6470131A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62106845A (en) * | 1985-11-05 | 1987-05-18 | Toyota Motor Corp | Catalyst for purifying exhaust gas |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997047863A1 (en) * | 1996-06-08 | 1997-12-18 | Ford Motor Company Limited | Catalytic converter for a lean burn engine |
| JP2003010646A (en) * | 2001-07-05 | 2003-01-14 | Toyota Central Res & Dev Lab Inc | Apparatus and method for cleaning diesel exhaust |
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