JPS5457487A - Production of exhaust gas treatment catalyst - Google Patents
Production of exhaust gas treatment catalystInfo
- Publication number
- JPS5457487A JPS5457487A JP12403977A JP12403977A JPS5457487A JP S5457487 A JPS5457487 A JP S5457487A JP 12403977 A JP12403977 A JP 12403977A JP 12403977 A JP12403977 A JP 12403977A JP S5457487 A JPS5457487 A JP S5457487A
- Authority
- JP
- Japan
- Prior art keywords
- soln
- exhaust gas
- sulfates
- catalyst
- ferrous
- 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
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 abstract 4
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract 3
- 238000000465 moulding Methods 0.000 abstract 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 2
- 229910052918 calcium silicate Inorganic materials 0.000 abstract 2
- 239000000378 calcium silicate Substances 0.000 abstract 2
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 abstract 2
- 238000010531 catalytic reduction reaction Methods 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 229960001781 ferrous sulfate Drugs 0.000 abstract 1
- 229940107029 ferrous sulfate,dried Drugs 0.000 abstract 1
- 235000003891 ferrous sulphate Nutrition 0.000 abstract 1
- 239000011790 ferrous sulphate Substances 0.000 abstract 1
- 229910000358 iron sulfate Inorganic materials 0.000 abstract 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 abstract 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 abstract 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 abstract 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
PURPOSE: To obtain a catalyst with superior denitration activity and heat resistance by impregnating a mixed aq. soln. of ferrous and ferric sulfates in production of catalyst for selective catalytic reduction of NOx in exhaust gas by supporting iron sulfate on a molding based on calcium silicate.
CONSTITUTION: A molding based on calcium silicate is dipped in a mixed aq. soln. of ferrous and ferric sulfates, and dried to obtain a catalyst for removing NOx in exhaust gas in the presence of a reducing agent such as NH3. The total amt. of the sulfates supported is pref. less than 30% and the amt. of the ferrous sulfate 1W10%. The sulfates may be supported in two steps as follows; the molding is dipped in an aq. soln. of ferrous sulfate, dried, dipped in an aq. soln. of ferric sulfate, and dried
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12403977A JPS5457487A (en) | 1977-10-18 | 1977-10-18 | Production of exhaust gas treatment catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12403977A JPS5457487A (en) | 1977-10-18 | 1977-10-18 | Production of exhaust gas treatment catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5457487A true JPS5457487A (en) | 1979-05-09 |
Family
ID=14875495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12403977A Pending JPS5457487A (en) | 1977-10-18 | 1977-10-18 | Production of exhaust gas treatment catalyst |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5457487A (en) |
-
1977
- 1977-10-18 JP JP12403977A patent/JPS5457487A/en active Pending
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