Catalyst for removing nitrogen oxide and process for producing t

Details Catalyst for removing nitrogen oxide and process for producing t Catalyst for removing nitrogen oxide and process for producing t

1987-07-02

1989-01-17

Shine, W. J.

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

Zeolite or clay, including gallium analogs

502 77, 502 78, 423239, B01J 2106, B01J 2372, B01J 2904, B01J 2918

Patent

active

047988134

ABSTRACT:
A catalyst for removing nitrogen oxides whose activity deterioration due to volatile poisons contained in exhaust gases is prevented and which has a superior endurance, and a process for producing the catalyst are provided, which catalyst comprises a titania having a surface area of 20 m.sup.2 /g or less and a zeolite having 0.01 to 20% by weight of copper supported thereon; having an average pore diameter of 10 .ANG. or less; and having a silica/alumina molar ratio of 10 or more, and which process comprises mixing powder of the zeolite with the titania or its precursor, followed by molding the mixture into a predetermined shape, followed by calcining the resulting material at 800.degree. C. or higher.

REFERENCES:
patent: 4046888 (1977-09-01), Maeshima et al.
patent: 4663300 (1987-05-01), Lester et al.

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