JPS5584540A - Catalyst for removing nitrogen oxide - Google Patents
Catalyst for removing nitrogen oxideInfo
- Publication number
- JPS5584540A JPS5584540A JP15968878A JP15968878A JPS5584540A JP S5584540 A JPS5584540 A JP S5584540A JP 15968878 A JP15968878 A JP 15968878A JP 15968878 A JP15968878 A JP 15968878A JP S5584540 A JPS5584540 A JP S5584540A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- nitrogen oxide
- oxide
- alkali
- molar ratio
- 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 provide an economical catalyst effective at a low temperature as catalyst for removing nitrogen oxide by a method wherein a specific molar ratio of aq. ferrous and ferric salts solution is treated with alkali to prepare iron based oxide. CONSTITUTION:Alkali such as sodium hydroxide is added to an aq. solution which contains ferrous and ferric salts in molar ratio Fe<3+>/Fe<2+> of 0.2-3. Then, black iron based oxide precipitates at pH8-12. The precipitate, after filtered and washed, is heated at 300-400 deg.C and dried. The resulted oxide essentially consists of magnetite and has a relative surface area about 40m<2>/g or more. The product is active at a low catalytic temperature and functions as an inexpensive nitrogen oxide removing catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15968878A JPS5584540A (en) | 1978-12-21 | 1978-12-21 | Catalyst for removing nitrogen oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15968878A JPS5584540A (en) | 1978-12-21 | 1978-12-21 | Catalyst for removing nitrogen oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5584540A true JPS5584540A (en) | 1980-06-25 |
Family
ID=15699138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15968878A Pending JPS5584540A (en) | 1978-12-21 | 1978-12-21 | Catalyst for removing nitrogen oxide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5584540A (en) |
-
1978
- 1978-12-21 JP JP15968878A patent/JPS5584540A/en active Pending
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