JPS6434446A - Catalyst for purification of exhaust gas - Google Patents
Catalyst for purification of exhaust gasInfo
- Publication number
- JPS6434446A JPS6434446A JP62189819A JP18981987A JPS6434446A JP S6434446 A JPS6434446 A JP S6434446A JP 62189819 A JP62189819 A JP 62189819A JP 18981987 A JP18981987 A JP 18981987A JP S6434446 A JPS6434446 A JP S6434446A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- substrate
- active alumina
- purification
- catalyst
- 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
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
PURPOSE:To raise oxidation resistance and catalytic activity by allowing a catalytic metal to be carried by at least an active alumina-carrying layer out of a layer of oxides of Zr and Si and the active alumina-carrying layer, both layer having been provided on a substrate, thereby preparing a catalyst for purification of exhaust gases. CONSTITUTION:A substrate made of heat-resistant steel is heat-treated, with Zr and silicon present on surfaces of the substrate, thereby forming an oxide layer on the surfaces of the substrate. Further, a catalytic metal is carried by at least an active alumina-carrying layer out of the oxide layer and the active alumina-carrying layer. Thus, a catalyst for purification of exhaust gases is formed. More particularly, the catalyst for purification of exhaust gases is constituted by a cylindrical honeycomb substrate 1 consisting of predetermined components, an oxide layer 2 formed on surfaces of the substrate, an active alumina-carrying layer 3 formed on the layer 2, and a catalytic metal 4 carried mainly by the active alumina-carrying layer 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62189819A JPS6434446A (en) | 1987-07-29 | 1987-07-29 | Catalyst for purification of exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62189819A JPS6434446A (en) | 1987-07-29 | 1987-07-29 | Catalyst for purification of exhaust gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6434446A true JPS6434446A (en) | 1989-02-03 |
Family
ID=16247737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62189819A Pending JPS6434446A (en) | 1987-07-29 | 1987-07-29 | Catalyst for purification of exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6434446A (en) |
-
1987
- 1987-07-29 JP JP62189819A patent/JPS6434446A/en active Pending
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