Process for regenerating a catalyst and resultant regenerated ca

Details Process for regenerating a catalyst and resultant regenerated ca Process for regenerating a catalyst and resultant regenerated ca

1989-07-31

1991-08-27

Konopka, Paul E.

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

From nonhydrocarbon feed

502 29, 502 33, 585640, C07C 100, B01J 2120, B01J 3852

Patent

active

050435183

ABSTRACT:
A process for regenerating a catalyst which involves washing a catalyst with a liquid at a temperature within the range of about 50.degree. C. to about 70.degree. C. for a time sufficient to remove foulants thereby recovering catalyst activity. The wash liquid is preferably a member selected from the group consisting of ethers, alcohols and mixtures of ethers and alcohols wherein the ether is a tertiary alkyl ether, preferably selected from the group consisting of tertiary amyl methyl ether and methyl tertiary butyl ether, and wherein the alcohol is preferably selected from the group consisting of tertiary butyl alcohol and methanol. The catalyst is preferably a clay treated with an acid selected from the group consisting of hydrofluoric acid, hydrochloric acid and mixtures of hydrofluoric and hydrochlorica acid, wherein the clay is preferably selected from the group consisting of montmorillonite, kaolinite, attapulgite, bentonite and natural clay.

REFERENCES:
patent: 2784238 (1957-05-01), Hitchinson et al.
patent: 3472786 (1969-10-01), Urban et al.
patent: 4320232 (1982-05-01), Volkamer et al.
patent: 4398051 (1983-08-01), Araki et al.
patent: 4447668 (1984-05-01), Smith et al.
patent: 4469805 (1984-09-01), Kofke et al.
patent: 4691073 (1987-09-01), Michaelson

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