Process for the calcination of phosphorus-molybdenum catalyst

Details Process for the calcination of phosphorus-molybdenum catalyst Process for the calcination of phosphorus-molybdenum catalyst

1983-01-11

1984-09-04

Gantz, Delbert E.

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

Catalyst or precursor therefor

Phosphorus or compound containing same

502210, 502211, B01J 2714

Patent

active

044698100

ABSTRACT:
A process for improving the operating characteristics of a phosphorous-, molybdenum-, and oxygen-containing catalyst used for the production of an unsaturated carboxylic acid by gas phase catalytic oxidation of a corresponding unsaturated aldehyde, comprising the step of calcinating the catalyst at a temperature of 300.degree.-500.degree. C. while a gas containing 0.05-3 vol. % of ammonia and/or steam is passed over the catalyst.

REFERENCES:
patent: 4163862 (1979-08-01), Dolhyj et al.
patent: 4190556 (1980-02-01), Grasselli et al.
patent: 4220802 (1980-09-01), Okiyama et al.
patent: 4260822 (1981-04-01), Krieger et al.
patent: 4338463 (1982-07-01), Show et al.

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