Process for improving phosphorus-vanadium oxide and phosphorus-v

Details Process for improving phosphorus-vanadium oxide and phosphorus-v Process for improving phosphorus-vanadium oxide and phosphorus-v

1986-08-26

1987-10-20

Metz, Andrew

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

Catalyst or precursor therefor

Phosphorus or compound containing same

502211, 502162, 549259, 549260, B01J 27198, B01J 2719, B01J 3100, C07D30734

Patent

active

047014334

ABSTRACT:
A process is disclosed for the improvement of a vanadium-phosphorus-oxygen catalyst or a vanadium-phosphorus-oxygen-co-metal catalyst suitable for use in the manufacture of maleic anhydride from butane, which process comprises applying in situ water and a phosphorus compound in an amount to partially deactivate a portion of the catalyst in a catalyst bed containing an exotherm of reaction which was present in the catalyst bed prior to the addition of the phosphorus compound, thereby moving the exotherm downstream into the catalyst bed and thus improving the catalyst.
These catalysts are useful for the manufacture of maleic anhydride from butane feedstock.

REFERENCES:
patent: Re30430 (1980-11-01), Kerr
patent: 3296282 (1967-01-01), Kerr
patent: 4081460 (1978-03-01), Kerr et al.
patent: 4515899 (1985-05-01), Click et al.
patent: 4525471 (1985-06-01), Bremer et al.
patent: 4596818 (1986-06-01), Newsome et al.

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