Process for the preparation of trimellitic acid

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof

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549245, 562417, 562480, C07C 51265

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active

052507246

ABSTRACT:
A very selective process for the catalytic air oxidation of pseudocumene to trimellitic acid. Manganese, cobalt, cerium and titanium in the presence of bromine are used as the catalyst.

REFERENCES:
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patent: 4755622 (1988-07-01), Schammel et al.
patent: 4895978 (1990-01-01), Darin et al.
patent: 4948921 (1990-08-01), Green et al.
patent: 4992579 (1991-02-01), Schammel
patent: 5095141 (1992-03-01), Schammel et al.
Ullmann's Encyklopadie der techn. Chemie, 4th Ed., vol. 9, p. 150, (1972-1975).

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