Catalyst for removing nitrogen oxides from a waste gas, and proc

Details Catalyst for removing nitrogen oxides from a waste gas, and proc Catalyst for removing nitrogen oxides from a waste gas, and proc

1993-07-20

1995-02-21

Konopka, Paul E.

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

Catalyst or precursor therefor

Boron or compound containing same

4232391, 502202, 502209, 502210, 502242, 502247, 502248, 502439, 502527, B01J 2102, B01J 2114, B01J 2718, B01J 3504

Patent

active

053915305

ABSTRACT:
The present invention relates to a process for the production of a catalyst for the removal of nitrogen oxides from waste gases, in which the end of the catalyst on the gas-inlet side is coated with a compound selected from the group consisting of biphosphates, condensed phosphates, silicates, borates and mixtures thereof, and is subjected to thermal aftertreatment, where the end of the green element on the gas-inlet side is immersed into an aqueous preparation comprising biphosphates and/or condensed phosphates and/or silicates and/or borates, and the green element is subsequently calcined at temperatures of from 300.degree. to 700.degree. C.

REFERENCES:
patent: 4134733 (1979-01-01), Volker et al.
patent: 4294806 (1981-10-01), Abe et al.

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