JPS5461086A - Production of denitration catalyst - Google Patents
Production of denitration catalystInfo
- Publication number
- JPS5461086A JPS5461086A JP12851477A JP12851477A JPS5461086A JP S5461086 A JPS5461086 A JP S5461086A JP 12851477 A JP12851477 A JP 12851477A JP 12851477 A JP12851477 A JP 12851477A JP S5461086 A JPS5461086 A JP S5461086A
- Authority
- JP
- Japan
- Prior art keywords
- soln
- steel
- silica film
- film
- exfoliation
- 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
- 239000003054 catalyst Substances 0.000 title abstract 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 10
- 229910000831 Steel Inorganic materials 0.000 abstract 6
- 239000010959 steel Substances 0.000 abstract 6
- 239000000377 silicon dioxide Substances 0.000 abstract 5
- 238000005530 etching Methods 0.000 abstract 2
- 238000004299 exfoliation Methods 0.000 abstract 2
- 239000007800 oxidant agent Substances 0.000 abstract 2
- 229910000975 Carbon steel Inorganic materials 0.000 abstract 1
- 150000008043 acidic salts Chemical class 0.000 abstract 1
- 239000010962 carbon steel Substances 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 239000012286 potassium permanganate Substances 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 abstract 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
PURPOSE:To produce a metallic denitration catalyst with no exfoliation and wear of the active layer by dipping rolled steel covered with a porours silica film in an etching soln. contg. an oxidizing agent to form an oxide layer inside the film. CONSTITUTION:The surface of rolled steel such as carbon steel or stainless steel is etched mechanically or chemically. Next the steel is dipped in a silica colloidal soln. or coated with the soln. and dried to form a tough porous silica film of three- dimensional structure on the surface of the steel. It is then dipped in an etching soln., a suitable concn. aq. soln. of mineral acide, acidic salts, etc. contg. an adequate concn. of an oxidizing agent such as H2O2, KMnO4 or K2CrO4. The soln. reaches the surface of the steel through the silica film and etches it, forming oxides. Thereafter, the steel is taken out from the soln., dried, and optionally calcined. The oxide layer, that is, the active layer of the resulting catalyst is formed inside the silica film, so there is no possibility of exfoliation and wear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12851477A JPS5461086A (en) | 1977-10-25 | 1977-10-25 | Production of denitration catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12851477A JPS5461086A (en) | 1977-10-25 | 1977-10-25 | Production of denitration catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5461086A true JPS5461086A (en) | 1979-05-17 |
| JPS5621464B2 JPS5621464B2 (en) | 1981-05-19 |
Family
ID=14986616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12851477A Granted JPS5461086A (en) | 1977-10-25 | 1977-10-25 | Production of denitration catalyst |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5461086A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5040659A (en) * | 1988-11-09 | 1991-08-20 | Hitachi, Ltd. | Indicating apparatus for passenger conveyor, indicating body used therefor and method of assembling the apparatus |
-
1977
- 1977-10-25 JP JP12851477A patent/JPS5461086A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5040659A (en) * | 1988-11-09 | 1991-08-20 | Hitachi, Ltd. | Indicating apparatus for passenger conveyor, indicating body used therefor and method of assembling the apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5621464B2 (en) | 1981-05-19 |
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