Catalyst and process for removing nitrogen oxides

Details Catalyst and process for removing nitrogen oxides Catalyst and process for removing nitrogen oxides

1993-07-06

1994-11-22

Dees, Carl F.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

B01J 2302

Patent

active

053669509

ABSTRACT:
Disclosed herein are an inexpensive catalyst for removing nitrogen oxides effectively from an exhaust gas by either catalytic reduction or catalytic decomposition, and a process for removing nitrogen oxides from an exhaust gas by the aid of said catalyst. The invention will eliminate the disadvantages--high material cost and complex process for catalyst preparation--involved in the conventional technology. The catalyst contains as the major constituent a multiple oxide of the CaO-Fe.sub.x O type containing 5-50 wt % CaO, said catalyst reducing or decomposing nitrogen oxides. The process is designed for denitration of nitrogen oxides by the aid of said catalyst.

REFERENCES:
patent: 3498743 (1970-03-01), Kyllonen
patent: 4011299 (1977-03-01), Henis et al.
patent: 4025460 (1977-05-01), Ueda et al.
patent: 4742036 (1988-05-01), Flockenhaus et al.
patent: 4843980 (1989-07-01), Markham et al.

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