JPS5457485A - Production of exhaust gas treatment catalyst - Google Patents
Production of exhaust gas treatment catalystInfo
- Publication number
- JPS5457485A JPS5457485A JP12403777A JP12403777A JPS5457485A JP S5457485 A JPS5457485 A JP S5457485A JP 12403777 A JP12403777 A JP 12403777A JP 12403777 A JP12403777 A JP 12403777A JP S5457485 A JPS5457485 A JP S5457485A
- Authority
- JP
- Japan
- Prior art keywords
- calcium silicate
- exhaust gas
- carrier
- catalyst
- production
- 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
- 229910052918 calcium silicate Inorganic materials 0.000 abstract 4
- 239000000378 calcium silicate Substances 0.000 abstract 4
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 abstract 4
- 239000003513 alkali Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 150000002739 metals Chemical class 0.000 abstract 2
- 238000000465 moulding Methods 0.000 abstract 2
- 239000002002 slurry Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 1
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 1
- 239000000654 additive Substances 0.000 abstract 1
- 239000010425 asbestos Substances 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 238000010531 catalytic reduction reaction Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 239000004927 clay Substances 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- 239000003365 glass fiber Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000004571 lime Substances 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 229910052895 riebeckite Inorganic materials 0.000 abstract 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 abstract 1
- 229910052720 vanadium Inorganic materials 0.000 abstract 1
- UUUGYDOQQLOJQA-UHFFFAOYSA-L vanadyl sulfate Chemical compound [V+2]=O.[O-]S([O-])(=O)=O UUUGYDOQQLOJQA-UHFFFAOYSA-L 0.000 abstract 1
- 229940041260 vanadyl sulfate Drugs 0.000 abstract 1
- 229910000352 vanadyl sulfate Inorganic materials 0.000 abstract 1
Landscapes
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
PURPOSE: To enhance the catalytic activity of an exhaust gas treatment catalyst for selective catalytic reduction denitration in production of the catalyst using a calcium silicate molding as carrier by dipping the carrier in water to remove the free alkali component and then supporting active metals.
CONSTITUTION: A calcium silicate molding is dipped in water to remove the free alkali component and oxides or sulfates of metals such as Fe, Cr, Mn, Ni and V, and vanadyl sulfate are supported to obtain a catalyst for removing NOx in exhaust gas in the presence of a reducing agent such as NH3. The calcium silicate carrier is produced by subjecting an aq. slurry of silicic acid and lime optionally mixed with inorg. additives such as clay, asbestos and glass fiber to hydrothermal synthetic reaction and crystallization under a press. of about 5W20 kg/cm2 with stirring at 200W300°C. The resulting slurry of calcium silicate crystals is then press molded to a desired thickness and dried
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12403777A JPS5457485A (en) | 1977-10-18 | 1977-10-18 | Production of exhaust gas treatment catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12403777A JPS5457485A (en) | 1977-10-18 | 1977-10-18 | Production of exhaust gas treatment catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5457485A true JPS5457485A (en) | 1979-05-09 |
Family
ID=14875453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12403777A Pending JPS5457485A (en) | 1977-10-18 | 1977-10-18 | Production of exhaust gas treatment catalyst |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5457485A (en) |
-
1977
- 1977-10-18 JP JP12403777A patent/JPS5457485A/en active Pending
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