Catalyst for removing nitrogen oxides in exhaust gases

Details Catalyst for removing nitrogen oxides in exhaust gases Catalyst for removing nitrogen oxides in exhaust gases

1987-07-24

1990-01-02

Konopka, Paul E.

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

423239, 502 84, 502217, 502242, 502350, 502351, B01J 2106, B01J 2330, B01J 2328, C01B 2100

Patent

active

048913480

ABSTRACT:
A catalyst for removing nitrogen oxides in an exhaust gas, said catalyst containing a first group of many pores having a diameter of 1.times.10.sup.2 .ANG. to less than 1.times.10.sup.3 .ANG. and a second group of many pores having a diameter of 1.times.10.sup.3 .ANG. to 1.2.times.10.sup.5 .ANG., the pore volume of the first group being at least 10% based on the total pore volume of the first group and the second group, and said catalyst comprising titanium and at least one metal selected from molybdenum, tungsten and vanadium as metal elements of catalytically active ingredients.

REFERENCES:
patent: 4085193 (1978-04-01), Nakajima et al.
patent: 4152296 (1979-05-01), Okabe et al.
patent: 4405505 (1983-09-01), Neri
patent: 4520124 (1985-05-01), Abe et al.

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