Catalyst for treating waste gases

Details Catalyst for treating waste gases Catalyst for treating waste gases

1984-11-15

1986-01-14

Dees, Carl F.

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

Zeolite or clay, including gallium analogs

And additional al or si containing component

502 77, 502 78, 502 79, 423239, B01J 2908, B01J 2918, B01J 2928

Patent

active

045646040

ABSTRACT:
A catalyst for treating waste gases comprising nitrogen oxides, which catalyst comprises a protonized zeolite coating formed on the surface of a catalytic ingredient. This type of catalyst has a prolonged life and is very useful in treating waste gases comprising nitrogen oxides by adding ammonia to the waste gas and reducing the nitrogen oxides in the waste gas with the catalyst to render the nitrogen oxides non-noxious.

REFERENCES:
patent: 4046888 (1977-09-01), Maeshima et al.
patent: 4048112 (1977-09-01), Matsushita et al.
patent: 4246141 (1981-01-01), Hass et al.

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