Catalyst used in a process for producing pyromellitic dianhydrid

Details Catalyst used in a process for producing pyromellitic dianhydrid Catalyst used in a process for producing pyromellitic dianhydrid

1990-02-23

1991-03-19

Shine, W. J.

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

Catalyst or precursor therefor

Inorganic carbon containing

502309, 502312, B01J 2106, B01J 2304, B01J 2322, B01J 2328

Patent

active

050011006

ABSTRACT:
A catalyst comprising an inert support that carries on it vanadium oxide, sodium oxide and molybdenum oxide in predetermined amounts, at least one additional component in a predetermined amount which is selected from among chromium oxide, manganese oxide, niobium oxide and titanium oxide is capable of producing pyromellitic dianhydride in high yield from inexpensive durene over a broad optimal temperature range while suppressing the generation of heat in the catalyst bed.

REFERENCES:
patent: 4259211 (1981-03-01), Krabetz et al.
patent: 4415752 (1983-11-01), Decker et al.
patent: 4892856 (1990-01-01), Kawajiri et al.

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