Reactivation of noble metal-containing zeolite catalyst material

Details Reactivation of noble metal-containing zeolite catalyst material Reactivation of noble metal-containing zeolite catalyst material

1984-04-26

1985-11-26

Konopka, P. E.

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

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

208111, 208140, 502 52, B01J 2938, C10G 4718, C10G 35095

Patent

active

045554951

ABSTRACT:
A process is described for rejuvenating a coke-deactivated noble metal-containing zeolite catalyst material which comprises sulfiding the deactivated catalyst material by contacting with a sulfiding agent such as hydrogen sulfide-containing gas, removing coke from the sulfided catalyst by contacting the catalyst with oxygen in the presence of sulfur dioxide, and thereafter reducing the catalyst in the presence of a reducing agent such as hydrogen. The process permits catalyst reactivation by burning off coke from the catalyst while avoiding excessive agglomeration of the noble metals thereon.

REFERENCES:
patent: 3287256 (1966-11-01), Young
patent: 4377468 (1983-03-01), Pierre et al.

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