JPS5567334A - Catalyst for reducing nitrogen oxide - Google Patents
Catalyst for reducing nitrogen oxideInfo
- Publication number
- JPS5567334A JPS5567334A JP14023278A JP14023278A JPS5567334A JP S5567334 A JPS5567334 A JP S5567334A JP 14023278 A JP14023278 A JP 14023278A JP 14023278 A JP14023278 A JP 14023278A JP S5567334 A JPS5567334 A JP S5567334A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- nitrogen oxides
- oxides
- activated alumina
- 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
Links
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title abstract 15
- 239000003054 catalyst Substances 0.000 title abstract 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 4
- 239000007789 gas Substances 0.000 abstract 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 229910052697 platinum Inorganic materials 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 229910052788 barium Inorganic materials 0.000 abstract 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 abstract 1
- CSSYLTMKCUORDA-UHFFFAOYSA-N barium(2+);oxygen(2-) Chemical class [O-2].[Ba+2] CSSYLTMKCUORDA-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000002829 reductive effect Effects 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
Landscapes
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
PURPOSE: To obtain a catalyst of which the conversion efficiency of nitrogen oxides is not lowered even when used for a long period at high temperature by including activated alumina, oxides of platinum and barium or the like in the active layer of the catalyst for reducing nitrogen oxides.
CONSTITUTION: In the preparation of a catalyst which reduces and decomposes harmful nitrogen oxides within exhaust gas to harmless gas, an activated alumina or a silica containing activated alumina is deposited on the surface of a carrier, and thereafter an aqueous solution of platinum and barium oxides is impregnated and dispersed in the alumina layer. The catalyst obtained by this method does not lose the conversion efficiency which converts nitrogen oxides and reductive gas to harmless gas even when used for a long period at high temperatures.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14023278A JPS5567334A (en) | 1978-11-13 | 1978-11-13 | Catalyst for reducing nitrogen oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14023278A JPS5567334A (en) | 1978-11-13 | 1978-11-13 | Catalyst for reducing nitrogen oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5567334A true JPS5567334A (en) | 1980-05-21 |
Family
ID=15263971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14023278A Pending JPS5567334A (en) | 1978-11-13 | 1978-11-13 | Catalyst for reducing nitrogen oxide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5567334A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0687495A2 (en) | 1994-06-17 | 1995-12-20 | ICT Co., Ltd. | Catalyst for purifying exhaust gas from lean burn engine and method for purification |
| EP0781590A1 (en) * | 1995-12-25 | 1997-07-02 | Toyota Jidosha Kabushiki Kaisha | Exhaust catalyst for purifying exhaust gas emitted from diesel engine |
-
1978
- 1978-11-13 JP JP14023278A patent/JPS5567334A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0687495A2 (en) | 1994-06-17 | 1995-12-20 | ICT Co., Ltd. | Catalyst for purifying exhaust gas from lean burn engine and method for purification |
| EP0781590A1 (en) * | 1995-12-25 | 1997-07-02 | Toyota Jidosha Kabushiki Kaisha | Exhaust catalyst for purifying exhaust gas emitted from diesel engine |
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