Ruthenium catalyst system and method of stabilizing a ruthenium

Details Ruthenium catalyst system and method of stabilizing a ruthenium Ruthenium catalyst system and method of stabilizing a ruthenium

1978-04-10

1979-05-01

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

4232135, B01J 2310, B01J 2346, B01J 2374

Patent

active

041522990

ABSTRACT:
Under oxidizing conditions, a ruthenium catalyst system which is not protected will lose ruthenium by volatilization. A method is taught in this specification for stabilizing a ruthenium catalyst system against such volatilization under oxidizing conditions. The method is carried out by applying to a catalyst substrate a ruthenium catalyst system in which the catalytic material under oxidizing conditions is of the type La.sup.+3 Ni.sub.x.sup.+3 Ru.sub.1-x.sup.+3 O.sub.3 wherein x is in the range from 0.1 to 0.9.

REFERENCES:
patent: 3897367 (1975-07-01), Lauder
patent: 3901828 (1975-08-01), Mai et al.
patent: 3907968 (1975-09-01), Kobylinski et al.
patent: 3972837 (1976-08-01), Acres et al.

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