Process for the manufacture of catalyst members for the reductio

Details Process for the manufacture of catalyst members for the reductio Process for the manufacture of catalyst members for the reductio

1989-03-29

1990-06-19

Dees, Carl F.

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

Zeolite or clay, including gallium analogs

502319, 502338, 502527, B01J 2904, B01J 3700, B01J 3500

Patent

active

049353926

ABSTRACT:
This invention relates to a process for the manufacture of catalysts for the reduction of oxides of nitrogen from exhaust gases and in chemical air cleaning processes in which a catalytically active material containing iron ores, chromium ores and/or zeolite is placed in contact with a carrier means having a series of openings; e.g., wire mesh, expanded or perforated metal or any type of grid-like structure to form a catalytic member. The carrier means is etched with an acid etchant before forming the catalytic member or, instead, the catalytic member is etched with an acid etchant. The catalytic member is bonded by a thermal treatment; e.g., drying, tempering and/or fixing. This invention also relates to catalytic members or products produced by the process. This invention proposes the use of pressure bonding to obtain a catalytic member product which has significantly improved catalytic activity, greater mechanical strength and higher resistance to chipping.

REFERENCES:
patent: 3956192 (1976-05-01), Nicolai
patent: 4248736 (1981-02-01), Fuchigami et al.
patent: 4293447 (1981-10-01), Inaba et al.
patent: 4806427 (1989-02-01), Stein et al.

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