Rhodium catalyst and method for preparing the same

Details Rhodium catalyst and method for preparing the same Rhodium catalyst and method for preparing the same

1981-04-14

1983-03-15

Peters, G.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252472, B01J 2346

Patent

active

043767249

ABSTRACT:
A rhodium catalyst containing supported rhodium metal omnipresent in the surface layer or in the neighborhood of the surface layer of the particles of a silica or titania type support is presented. This catalyst is prepared by a method (i) in which the support is dipped into an aqueous solution of a water-soluble rhodium salt previously adjusted to a pH of at least 10, followed by the drying and reduction, or a method (ii) in which the support is first dipped into an aqueous solution of a water-soluble rhodium salt having a pH of 1 or less and, then, dipped into an aqueous alkaline solution containing an alkaline compound in an amount sufficient to neutralize the acid impregnated in the support and also sufficient to convert the rhodium salt impregnated in the support into rhodium hydroxide, followed by the drying and reduction.

REFERENCES:
patent: 3894965 (1975-07-01), Foster et al.
patent: 4113658 (1978-09-01), Geus
patent: 4128506 (1978-12-01), Hegedus et al.
patent: 4176994 (1978-09-01), Vannice
patent: 4233189 (1980-11-01), Ghandi

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