Method of making a catalytic metal oxide selective for the conve

Details Method of making a catalytic metal oxide selective for the conve Method of making a catalytic metal oxide selective for the conve

1992-05-04

1993-07-20

Shine, W. J.

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

Catalyst or precursor therefor

Silicon containing or process of making

502200, 502325, 502326, 502334, 502337, 502338, 502339, 502340, 502344, 502349, 502350, B01J 2106, B01J 2302, B01J 2314, B01J 2374

Patent

active

052293459

ABSTRACT:
Method of making a catalytic metal oxide selective to catalyzing the conversion of given gas species, comprising intimately supporting a solid film of catalytic metal oxide (i.e., TiO.sub.2, SnO.sub.2, FeO, SrTiO.sub.3, CoO) on an electrically conducting material (i.e., Au, Pt, TiN, Pd, Rh, Ni, Co), the film having an exposed outer surface spaced no greater than 1000 angstroms from said conducting material, the composition of the conducting material being matched to the composition of the oxide to change the electron state of the exposed outer surface to promote only a reaction between given gas species and said oxide.
A composite metal oxide catalyst system, comprising: a substantially nonconducting support; an electrically conducting film on the support; and a catalytically active ultra-thin outer layer of a catalytic metal oxide on and in intimate contact with the conducting film.

REFERENCES:
patent: 4478797 (1984-10-01), Diwell et al.
patent: 4650782 (1987-03-01), Onal
patent: 5021388 (1991-06-01), Fridez et al.
patent: 5102853 (1992-04-01), Chattha et al.

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