Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1988-08-05
1989-05-23
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
562414, 562486, C07C 51487
Patent
active
048332690
ABSTRACT:
A process is disclosed for purifying a crude terephthalic acid mother liquor stream comprising oxidation catalysts, terephthalic acid, color bodies and impurities by hydrogenation in the presence of a rhodium-on-carbon catalyst wherein color bodies and impurities are hydrogenated to saturated compounds for subsequent oxidation to carbon oxides. The terephthalic acid in said stream is thereupon recovered.
REFERENCES:
patent: 4467110 (1984-08-01), Puskas et al.
Amoco Corporation
Blumberg Gunar J.
Clarke Vera C.
Lone Werren B.
Magidson William H.
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