Catalyst for selective reduction of nitrous oxides with ammonia

Details Catalyst for selective reduction of nitrous oxides with ammonia Catalyst for selective reduction of nitrous oxides with ammonia

1992-12-31

1994-04-05

Sneed, Helen M. S.

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502312, 502350, 502204, 502206, 502207, 502202, 502209, 502210, 502211, 502213, 502214, 502208, 502242, 502303, 502304, B01J 3704, B01J 2106, B01J 2102, B01J 2104

Patent

active

053004728

ABSTRACT:
A catalyst for the selective reduction of nitrous oxide with ammonia contains, in addition to titanium oxide as component (A), at least one oxide of W, Si, B, Al, P, Zr, Ba, Y, La, Ce and at least one oxide of Y, Nb, Mo, Fe, Cu as component (B), whereby the atomic ratio between the elements of components (A) and (B) amounts to 1:0.001 up to 1. The catalyst can be obtained by kneading reactive titanium oxide with a high specific surface of predominantly anatase with the substances of component (B) or their preliminary stages, adding processing agents, winding up with a homogeneous kneaded mass, extruding the latter, drying the extrudate and calcining in air at 300.degree.-800.degree. C.

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