Method of treating a used platinum group alumina catalyst with a

Details Method of treating a used platinum group alumina catalyst with a Method of treating a used platinum group alumina catalyst with a

1977-01-13

1978-01-24

Garvin, Patrick P.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

208112, 208140, 252412, 252415, 260668A, 26068365, B01J 2396, C10G 3508

Patent

active

040703061

ABSTRACT:
A method for preparing an improved composition of matter whereby a solid catalyst comprising alumina derived from hydrous alumina predominating in alumina trihydrates and at least one platinum group component is used in hydrocarbon conversion service for a period of time to reduce the surface area of said solid catalyst to from about 20% to about 90% of the surface area of the original solid catalyst. This decreased area solid catalyst is treated with at least one metal promoter to produce a treated catalyst having improved properties. An improved method for hydrocarbon conversion using this treated catalyst is also disclosed.

REFERENCES:
patent: 3554902 (1971-01-01), Buss
patent: 3578584 (1971-05-01), Hayes
patent: 3649565 (1972-03-01), Wilhelm
patent: 3705094 (1972-12-01), Keith et al.
patent: 3725249 (1973-04-01), Vesely et al.
patent: 3729408 (1973-04-01), Carter et al.
patent: 3745112 (1973-07-01), Rausch

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