Process for purification of crude terephthalic acid

Details Process for purification of crude terephthalic acid Process for purification of crude terephthalic acid

1983-02-15

1984-08-21

Trousof, Natalie

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

Organic compounds

Carboxylic acids and salts thereof

502185, 502230, 562485, C07C 5142

Patent

active

044671105

ABSTRACT:
A process for producing a purified terephthalic acid which comprises reacting in a liquid phase a mixture of hydrogen and crude terephthalic acid, a palladium/rhodium catalyst on a porous carbonaceous support wherein the catalyst compound is prepared by adsorbing palladium on the support from a complex salt formed in the presence of an amine and acetic acid, followed by deposition of rhodium from a solution of sodium hexanitritorhodate.

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