Catalyst for selectively reducing nitrogen oxides from oxygen-co

Details Catalyst for selectively reducing nitrogen oxides from oxygen-co Catalyst for selectively reducing nitrogen oxides from oxygen-co

1980-02-01

1981-08-04

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252456, 252457, 252459, 252477R, 4232132, 4232135, 423239, B01J 2106, B01J 2302, B01J 2372, B01J 2374

Patent

active

042821150

ABSTRACT:
A catalyst for the selective catalytic reduction of nitrogen oxides by the use of ammonia as a reducing agent composed of a catalytically active constituent on a carrier having a honeycomb or parallel plate structure, the carrier being prepared from a slurry of crystallized calcium silicate prepared by mixing silicic acid and lime and heating the mixture under pressure, the calcium silicate having the structure of xonotrite and the formula 6 CaO.6 SiO.sub.2. H.sub.2 O.

REFERENCES:
patent: 3112184 (1963-11-01), Hollenbach
patent: 3939104 (1976-02-01), Campbell et al.
patent: 3960510 (1976-06-01), Sergeys

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