Sulfur dioxide regeneration of superacid catalyst

Details Sulfur dioxide regeneration of superacid catalyst Sulfur dioxide regeneration of superacid catalyst

1993-03-30

1994-11-08

Konopka, Paul E.

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

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

502 38, 585750, B01J 2730, B01J 3112, C07C 513

Patent

active

053626940

ABSTRACT:
A process for regeneration of spent sulfated and calcined solid superacid catalyst is disclosed. Said process comprises heating said catalyst to a temperature of approximately 450.degree. C. and contacting said catalyst with a gas stream comprising oxygen or air and sulfur dioxide. This regeneration process can be performed in situ.

REFERENCES:
patent: 2772947 (1956-12-01), Sowerwine Jr.
patent: 4394247 (1983-07-01), Olah
patent: 4918041 (1990-04-01), Hollstein et al.
patent: 4956519 (1990-09-01), Hollstein et al.
patent: 5036035 (1991-07-01), Baba et al.
patent: 5182247 (1993-01-01), Kuhlman et al.

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