Catalyst for the reduction of nitrogen oxides in gaseous mixture

Details Catalyst for the reduction of nitrogen oxides in gaseous mixture Catalyst for the reduction of nitrogen oxides in gaseous mixture

1984-01-25

1985-05-21

Shine, W. J.

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502312, 423239, B01J 2106, B01J 2322, B01J 2330

Patent

active

045187100

ABSTRACT:
A catalyst useful for the reduction of nitrogen oxide comprising vanadium and, optionally, tungsten deposited on an inorganic oxide support, preferably titania. A precursor of the catalyst is treated with an acid from the group comprising the moderately strong organic acids and/or the strong mineral acids, excluding sulfuric acid and phosphoric acid, preferably following the deposition of the metal(s). Other aspects of the invention are a method of preparing the catalyst and a process for its use wherein a gaseous stream of nitrogen oxide and ammonia is contacted with the catalyst at reductive reaction conditions.

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patent: 4255285 (1981-03-01), Engelbach et al.

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