Catalyst and method for purifying crude terephthalic acid, isoph

Details Catalyst and method for purifying crude terephthalic acid, isoph Catalyst and method for purifying crude terephthalic acid, isoph

1993-03-10

1994-11-08

Dees, Jose G.

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

Organic compounds

Carboxylic acids and salts thereof

562412, 562485, C07C 5142, C07C 51487

Patent

active

053629086

ABSTRACT:
A method is disclosed for the purification of crude terephthalic acid, crude isophthalic acid or a crude naphthalene dicarboxylic acid that employs a titanium dioxide-supported purification catalyst.

REFERENCES:
patent: 3584039 (1971-06-01), Meyer
patent: 4743577 (1988-05-01), Schroeder et al.
patent: 4831008 (1989-05-01), Timmer et al.
M. Bankmann et al., "Forming of High Surface Area TiO.sub.2 To Catalyst Supports", Symposium on Catalyst Supports: Chemistry, Forming and Characterization, presented before the Division of Petroleum Chemistry, Inc., American Chemical Society, New York City Meeting, Aug. 25.30, 1991.
M. Bankmann et al., "Forming of High Surface Area TiO.sub.2 To Catalyst Supports", Catalysis Today, vol. 14, pp. 225-242 (1992).

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