JPS5457485A - Production of exhaust gas treatment catalyst - Google Patents

Production of exhaust gas treatment catalyst

Info

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
Application number
JP12403777A
Other languages
Japanese (ja)
Inventor
Hiroshi Ogawa
Shiyou Fujita
Hiroshi Sugimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP12403777A priority Critical patent/JPS5457485A/en
Publication of JPS5457485A publication Critical patent/JPS5457485A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (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
JP12403777A 1977-10-18 1977-10-18 Production of exhaust gas treatment catalyst Pending JPS5457485A (en)

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)

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