Title:
【発明の名称】窒素酸化物除去用板状触媒およびその製造法
Document Type and Number:
Japanese Patent JP3076353
Kind Code:
B2
Abstract:
PURPOSE:To obtain a flat catalyst which is suitable for preventing wear and damage to a catalytic layer and a screen by impregnating a flat catalyst after activation process with a mixing agent to which an inorganic gelling agent is added or carrying out coating together with catalyst composition fine particles and then, drying and sintering the flat catalyst. CONSTITUTION:An inorganic fiber woven cloth is impregnated with a slurry containing inorganic oxide fine particles and dried to provide toughness. After an active layer containing catalyst composition fine particles is pre-coated on the cloth to form an inorganic fiber screen, a catalyst paste is applied to the inorganic fiber screen, dried, and sintered. The resulting sintered body is impregnated with a water-soluble inorganic binder containing aluminum sulfate or its mixture with silica sol to obtain a flat catalyst for nitrogen oxide removal consisting of the inorganic fiber woven cloth and catalyst composition carried on the cloth. In the catalyst, catalyst particles with relatively large diameter remain in the surface of the flat catalyst and form a coating layer and thus catalytic activation is maintained high.
Inventors:
Naomi Yoshida
Hitoshi Yamazaki
Hitoshi Yamazaki
Application Number:
JP14380590A
Publication Date:
August 14, 2000
Filing Date:
June 01, 1990
Export Citation:
Assignee:
Babkotsu Hitachi Co., Ltd.
International Classes:
B01J23/28; B01J35/06; B01D53/94; (IPC1-7): B01J35/06; B01D53/94; B01J23/28
Domestic Patent References:
| JP3114545A | ||||
| JP5973053A | ||||
| JP53120690A |
Attorney, Agent or Firm:
Takenaga Kawakita