Title:
CATALYST FOR PURIFICATION OF EXHAUST GAS AND ITS PREPARATION
Document Type and Number:
Japanese Patent JP3300028
Kind Code:
B2
Abstract:
PURPOSE: To enhance the improving effects on catalytic activity and heat resistance caused by a metal as a promotor by carrying a required amt. of the metal for the promotor on a carrier without bringing decrease in the carried amt. of a metal as a main catalyst in carrying the metal as the main catalyst and the metal as the promotor bath of which are used for purification of NOx on the carrier.
CONSTITUTION: A slurry is formed by mixing a catalyzer wherein a metal as a main catalyst and a metal as a promotor are carried on a metal-contg. silicate, a binder, a salt of the metal as the promotor and water, and a catalyst layer is formed by wash-coating the carrier with the slurry on the carrier. Thereby, a catalyst wherein the metal as the promotor is dispersed and carried on a binder part of the catalyst layer, is obtd.
Inventors:
Hideharu Iwakuni
Yasuhito Watanabe
Akihide Takami
Takashi Takemoto
Yasuhito Watanabe
Akihide Takami
Takashi Takemoto
Application Number:
JP12909392A
Publication Date:
July 08, 2002
Filing Date:
May 21, 1992
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
B01D53/94; B01J29/04; B01J29/06; B01J29/46; B01J29/76; B01J37/02; B01J37/30; (IPC1-7): B01J29/46; B01D53/94; B01J37/02
Domestic Patent References:
| JP4176337A | ||||
| JP4317671A | ||||
| JP1139144A | ||||
| JP2107315A | ||||
| JP2261545A | ||||
| JP6509985A |
Attorney, Agent or Firm:
Hiroshi Maeda (2 outside)
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