Preparation of phthalic anhydride from o-xylene

Details Preparation of phthalic anhydride from o-xylene Preparation of phthalic anhydride from o-xylene

1991-04-09

1993-07-06

Tsang, Cecilia

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549247, 549257, 549259, 549260, C07D30789

Patent

active

052255743

ABSTRACT:
Phthalic anhydride is prepared in a multiple tube reactor provided with separate salt baths, the temperature of the salt bath used for cooling the first layer of catalyst, as regarded in the direction of flow of the reaction mixture, being from 2.degree. to 20.degree. C. higher than that of the salt bath(s) associated with the following layer(s).

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Chemical Abstracts vol. 90, entry 152 625, 1979.
Optimal Policies in Maleic Anhydride Production Through Detailed Reactor Modelling Wellauer et al., Chem. Eng. Sci. 41, 765 (1986).

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