Catalytic exhaust unit for an automobile vehicle

Details Catalytic exhaust unit for an automobile vehicle Catalytic exhaust unit for an automobile vehicle

1992-02-28

1994-10-18

McMahon, Timothy M.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

422177, 60295, B01D 5336

Patent

active

053565983

ABSTRACT:
A catalytic exhaust unit for an automobile vehicle intended for the chemical treatment of a gaseous mixture in contact with a catalytic material. The exhaust unit includes a body with an entry and an exit for the flow of a gaseous mixture. The interior of the body includes two successive compartments. A filtering material is arranged in the first compartment, and a treatment receptacle is arranged in the second compartment. A mass of catalytic material, permeable to the passage of the gaseous mixture is arranged in the receptacle. The catalytic material is in solid form and includes an active substance consisting of metals and obtained by partial sintering. The mass of the catalytic material is arranged in a succession of at least two catalyst beds in the direction of flow of the gaseous mixture. The first bed includes copper as an active substance, and each of the other beds includes, by way of an active substance, at least one metal chosen from among copper, iron, nickel, cobalt, cadmium, and chromium.

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