Regeneration or activation of noble metal catalysts using fluoro

Details Regeneration or activation of noble metal catalysts using fluoro Regeneration or activation of noble metal catalysts using fluoro

1989-09-25

1990-12-25

Konopka, Paul E.

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

502181, 502185, 502230, 570134, 570176, B01J 3846, B01J 2713, C07C 1908

Patent

active

049803247

ABSTRACT:
This invention provides a process for the regeneration and/or activation of a noble catalyst comprising contacting said catalyst with an atmosphere comprising a fluorohalocarbon and/or a fluorohydrocarbon of the formula, C.sub.n H.sub.m F.sub.p X.sub.q, wherein X is chlorine and/or bromine; n is an integer from 1 to 6; m is an integer from 0 to 6, provided that m can be no more than the total n in the compound; p and q are integers from 1-13 when the compound is acrylic and integers from 1-11 when the compound is cyclic, provided that the fluorohalocarbon and/or fluorohalohydrocarbon always contain at least one chlorine or bromine atom and provided that m+p+q=2n+2 when the compound is acrylic and that m+p+q=2n when the compound is cyclic, at a temperature in excess of 200.degree. C.

REFERENCES:
patent: 2942036 (1960-06-01), Smith et al.
patent: 3418256 (1968-12-01), Rigney et al.
patent: 3439052 (1969-04-01), Bjornson
patent: 4164481 (1979-08-01), Ma et al.
patent: 4319060 (1982-03-01), Cunningham et al.
patent: 4873381 (1989-10-01), Kellner et al.
Franck et al., "Progress in Catalyst Deactivation", ed. by J. L. Figueiredo, Martinus Nijhoff, The Hague, 1982, p. 386ff.

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