Ozone removal filter containing manganese dioxide and ceric oxid

Details Ozone removal filter containing manganese dioxide and ceric oxid Ozone removal filter containing manganese dioxide and ceric oxid

1978-04-03

1980-04-29

Scovronek, Joseph

Chemical apparatus and process disinfecting, deodorizing, preser

For deodorizing of, or chemical purification of, or...

Including solid, extended surface, fluid contact reaction...

252471, 422177, 422181, 422218, 422222, 423210, 423219, B01J 2334, B01J 2384, C01B 1308

Patent

active

042006090

ABSTRACT:
Production of a device or filter for removal of ozone from air, e.g. in aircraft cabins, by depositing an oxide film containing manganese dioxide on a substrate, particularly a light weight thermally stable substrate, e.g. polybenzimidazole, by treatment with a permanganate solution containing a soluble ceric salt such as ceric ammonium nitrate, and preferably also a dichromate such as sodium dichromate, to form a dense strongly adherent film or coating of MnO.sub.2, ceric oxide and preferably also chromic oxide, on the substrate. A solution containing an oxidizable organic component such as abietic acid can be first applied to the substrate, followed by treatment with the above permanganate solution.

REFERENCES:
patent: 2739132 (1956-03-01), Riedl
patent: 3019197 (1962-01-01), Saunders
patent: 3269801 (1966-08-01), Boberg et al.
patent: 3295918 (1967-01-01), Briggs et al.
patent: 3407532 (1975-09-01), Roberts
patent: 3993597 (1976-11-01), Stiles
patent: 4003854 (1977-01-01), Skviorttov et al.
patent: 4007118 (1977-02-01), Ciambrone
patent: 4111793 (1978-09-01), Kolombos et al.
"The Merck Index", 9th Ed., 1976, pp. 71, 250, 993.
Rideal; "Ozone", Sep. 5, 1922, p. 135, Constable & Co. Ltd.

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