Catalyst and process for reducing nitrogen oxides

Details Catalyst and process for reducing nitrogen oxides Catalyst and process for reducing nitrogen oxides

1975-11-17

1978-08-08

Garvin, Patrick P.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423351, 252440, 252465, 252470, C01B 2100, B01J 2702, B01J 2316, B01J 2384

Patent

active

041057457

ABSTRACT:
A catalyst comprising an iron-chromium-oxygen type catalyst base and 0.1 through 20% of aluminum sulfate based on the weight of the above-mentioned catalyst base, is useful for reducing nitrogen oxides with ammonia at a temperature of 150.degree. C or higher, to convert it to nitrogen and water.

REFERENCES:
patent: 3669906 (1972-06-01), Koberstein
patent: 3923696 (1925-12-01), Chart et al.
patent: 3970739 (1976-07-01), Shiraishi et al.
patent: 3993731 (1976-11-01), Morikawa et al.
Chemical Abstracts, vol. 84, 1976, p. 307 21,719r, Removal of NO.sub.x from Waste Gases by Catalytic Reduction with Ammonia.
Chemical Abstracts, vol. 84, 1976, p. 307 21,720j, Removal of Nitrogen Oxides from Waste Gas by Catalytic Reduction.
Chemical Abstracts, vol. 83, 1975, p. 253 168,157u, Iron Oxide Catalyst for Reduction of NO.sub.x with Ammonia.
Chemical Abstracts, vol. 83, 1975, p. 280 32,547p & 32,548q, Title's the Same, Catalyst for Reduction of NO.sub.x in Exhaust Gases with Ammonia.
Chemical Abstracts, vol. 83, 1975, p. 309 15,102x & 15,104z, Title's the Same, Catalyst for Reduction of Nitrogen Oxide in Exhaust Gases with Ammonia.

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