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Patent Searching and Data


Title:
CATALYST FOR CATALYTIC REDUCTION OF NOX
Document Type and Number:
Japanese Patent JPH06320006
Kind Code:
A
Abstract:

PURPOSE: To obtain a catalyst for catalytic reduction of NOx capable of efficient reduction of NOx in exhaust gas without using a large amt. of a reducing agent and excellent in durability even in the presence of moisture by carrying cerium oxide on a solid acid carrier.

CONSTITUTION: Cerium oxide is carried on a solid acid carrier to obtain the objective catalyst for catalytic reduction of NOx with hydrocarbon or an oxygen-contg. org. compd. as a reducing agent. The solid acid carrier is a carrier exhibiting solid acidity in a temp. region in which the catalyst is used. A zeolite type or oxide type solid acid carrier may be used as the solid acid carrier and the pref. amt. of the cerium oxide carried on the solid acid carrier is 5-80wt.% of the total amt. of them. The catalyst itself can be formed into one of various shapes such as a honeycomb or sphere shape by a known forming method.


Inventors:
NAKATSUJI TADAO
SHIMIZU HIROMASU
YASUKAWA RITSU
MIYAMOTO KATSUMI
Application Number:
JP10811893A
Publication Date:
November 22, 1994
Filing Date:
May 10, 1993
Export Citation:
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Assignee:
PETROLEUM ENERGY CENTER FOUND
COSMO OIL CO LTD
SAKAI CHEMICAL INDUSTRY CO
International Classes:
B01D53/56; B01D53/34; B01D53/86; B01D53/94; B01J23/10; B01J29/06; B01J29/83; B01J29/84; B01J29/85; B01J29/88; B01J29/89; (IPC1-7): B01J29/06; B01D53/34; B01D53/36; B01J23/10
Attorney, Agent or Firm:
Makino Itsuro