JPS5771640A - Preparation of catalyst for removing waste gas - Google Patents
Preparation of catalyst for removing waste gasInfo
- Publication number
- JPS5771640A JPS5771640A JP55147533A JP14753380A JPS5771640A JP S5771640 A JPS5771640 A JP S5771640A JP 55147533 A JP55147533 A JP 55147533A JP 14753380 A JP14753380 A JP 14753380A JP S5771640 A JPS5771640 A JP S5771640A
- Authority
- JP
- Japan
- Prior art keywords
- composite oxide
- carrier
- catalyst
- waste gas
- coated
- 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 4
- 239000002912 waste gas Substances 0.000 title abstract 3
- 239000002131 composite material Substances 0.000 abstract 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 229910000510 noble metal Inorganic materials 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 2
- 150000004645 aluminates Chemical class 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 229910052763 palladium Inorganic materials 0.000 abstract 1
- PXXKQOPKNFECSZ-UHFFFAOYSA-N platinum rhodium Chemical compound [Rh].[Pt] PXXKQOPKNFECSZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
Landscapes
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
PURPOSE:To obtain a catalyst capable of simultaneously removing CO, HC, NOx in a waste gas in high capacity by a method wherein a carrier is coated with a composite oxide comprising activated alumina and a rare earth element and, thereafter a noble metal is supported on the obtained coated carrier. CONSTITUTION:An activated alumina powder and a rare earth element or a compound thereof are mixed and baked to synthesize a composite oxide such as serium aluminate or the like. The obtained composite oxide is coated on a predertermined carrier and, subsequently, on a surface of the obtained coated carrier, a catalyst of a noble metal such as palladium, platinum-rhodium or the like is supported. The resultant waste gas removing catalyst obtained by this method has characteristics with a wide window width because, in a side of a low redox index (an L value), if much oxygen is released from the composite oxide of the carrier, a conveesion ratio of CO, HC is increased and, conversely, in a side of a high L value, a condition wherein the composite oxide takes in excessive oxygen and the L value is approached to 1 is formed and a conversion ratio of NOx is increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55147533A JPS5771640A (en) | 1980-10-23 | 1980-10-23 | Preparation of catalyst for removing waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55147533A JPS5771640A (en) | 1980-10-23 | 1980-10-23 | Preparation of catalyst for removing waste gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5771640A true JPS5771640A (en) | 1982-05-04 |
Family
ID=15432456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55147533A Pending JPS5771640A (en) | 1980-10-23 | 1980-10-23 | Preparation of catalyst for removing waste gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5771640A (en) |
-
1980
- 1980-10-23 JP JP55147533A patent/JPS5771640A/en active Pending
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