Oxidative catalyst regeneration

Details Oxidative catalyst regeneration Oxidative catalyst regeneration

1987-07-27

1988-12-13

Konopka, Paul E.

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

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

502 38, 560214, 562535, 562599, B01J 2728, B01J 3814, C07C 5705, C07C 51377

Patent

active

047910801

ABSTRACT:
Method for regenerating catalysts containing molybdenum, phosphorus, and vanadium in oxidic association and useful for the oxydehydrogenation of isobutyric acid or its lower esters to form methacrylic acid or its lower esters, by oxidizing the spent catalyst with an oxygen containing gas at temperatures from 200.degree. C. to 400.degree. C., suitably intermittently and in alternation with oxydehydrogenation.

REFERENCES:
patent: 4052333 (1977-10-01), Lee
patent: 4146574 (1979-03-01), Onoda et al.
patent: 4370490 (1981-08-01), Gruber et al.
patent: 4471061 (1984-09-01), Shaw et al.
Ullmanns Encyclopaedie der technishen Chemie, 4th Edition, vol. 13, 518, 544-549, 558-565.

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