Process for the calcination/activation of V/P/O catalyst

Details Process for the calcination/activation of V/P/O catalyst Process for the calcination/activation of V/P/O catalyst

1994-10-28

1996-11-12

Pal, Asok

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

Catalyst or precursor therefor

Phosphorus or compound containing same

549259, B01J 27198

Patent

active

055739920

ABSTRACT:
An improved process for calcination and activation of a catalyst containing mixed oxides of vanadium and phosphorus (V/P/O) comprising the steps of calcining a hydrated V/P/O or V/P/O- SiO.sub.2 catalyst precursor at a temperature range of 375.degree. to 400.degree. C. for sufficient time to dehydrate said catalyst precursor while simultaneously and continuously controlling the oxygen level such as to maintain the Vox in the range of 3.825 to 4.175; and then activating the dehydrated catalyst precursor by further heating at a range of 340.degree. to 500.degree. C. in the presence of a gaseous atmosphere containing n-butane at a partial pressure not exceeding 0.20 atm while simultaneously and continuously controlling the oxygen level such as to maintain the Vox in the range of 3.95 to 4.15. Such a V/P/O catalyst is useful in the preparation of maleic anhydride from n-butane.

REFERENCES:
patent: 3864280 (1975-02-01), Schneider
patent: 3915892 (1975-10-01), Harrison
patent: 4111963 (1978-09-01), Mount et al.
patent: 4178298 (1979-12-01), Stefani et al.
patent: 4293498 (1981-10-01), Lamanski et al.
patent: 4371702 (1983-02-01), Bither, Jr.
patent: 4435521 (1984-03-01), Yang et al.
patent: 4517371 (1985-05-01), Yang et al.
patent: 4518523 (1985-05-01), Blum et al.
patent: 4562269 (1985-12-01), Moorehead
patent: 4569925 (1986-02-01), Yang et al.
patent: 4668802 (1987-05-01), Contractor
patent: 4677084 (1987-06-01), Bergna
patent: 4748140 (1988-05-01), Blum et al.
patent: 5021588 (1991-06-01), Contractor

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