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

1986-10-19

1988-01-12

Konopka, Paul E.

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

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

208111, 208140, 502 38, 502 52, B01J 2938, B01J 2396, B01J 3818, B01J 3814

Patent

active

047191899

ABSTRACT:
A process is described for rejuvenating a coke-deactivated noble metal-containing zeolite catalyst material which comprises removing coke from a non-sulfided catalyst by contacting the catalyst with oxygen only 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 metal thereon.

REFERENCES:
patent: 3287256 (1966-11-01), Young
patent: 4255251 (1981-03-01), Durkin
patent: 4377468 (1983-03-01), Pierre et al.
patent: 4555495 (1985-11-01), Krishnamurthy

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