Method for the production of a platinum catalyst used for purifi

Details Method for the production of a platinum catalyst used for purifi Method for the production of a platinum catalyst used for purifi

1974-04-02

1976-04-27

Shine, W. J.

Compositions

X-ray or neutron shield

252466PT, B01J 2340, B01J 2342

Patent

active

039533697

ABSTRACT:
A method for the production of a platinum catalyst used for purification of exhaust and waste gases which comprises supporting platinum either alone or in combination of other noble metals on to a porous inorganic refractory support using an aqueous medium containing dinitrodiammineplatinum and, optionally, other noble metals or their compounds in the presence of a poly(oxyethylene) type nonionic surface active agent of an average molecular weight of at least 500 and subjecting the so treated support to activation by calcining in an oxidative atmosphere or by reducing in a reductive atmosphere.

REFERENCES:
patent: 3785998 (1974-01-01), Hoekstra
patent: 3816344 (1974-06-01), Shimizu et al.

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