Regeneration of vanadium-bronze ammoxidation catalyst

Details Regeneration of vanadium-bronze ammoxidation catalyst Regeneration of vanadium-bronze ammoxidation catalyst

1975-05-12

1976-10-19

Douglas, Winston A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252416, 252464, 252476, C07C12014, B01J 2120, B01J 2394

Patent

active

039870804

ABSTRACT:
In an ammoxidation system where hydrocarbon, oxygen and ammonia are reacted at a temperature of from about 375.degree.C. to about 450.degree.C. in the presence of a vanadium bronze catalyst, the improvement of regenerating heat damaged catalyst by cooling the catalyst to below about 400.degree.C. and then reheating it to a temperature of from about 510.degree.C. to about 530.degree.C. in the presence of oxygen.

REFERENCES:
patent: 2496661 (1950-02-01), Denton
patent: 3367802 (1968-02-01), Rhodes
patent: 3704251 (1972-11-01), Vrbaski et al.
patent: 3803205 (1974-04-01), Shang et al.
patent: 3845094 (1974-10-01), Angstadt
patent: 3846473 (1974-11-01), Shang et al.
Chemical Abstracts vol. 62 -1965- 9841-g "Catalytic Activity of Vanadium Bronzes" by L. N. Ganyuk et al.

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