Process for preparing a carboxylic acid ester

Details Process for preparing a carboxylic acid ester Process for preparing a carboxylic acid ester

1996-09-03

1997-12-30

Langel, Wayne

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

Organic compounds

Carboxylic acid esters

560 8, 560106, 560129, 560190, 560205, 560221, 560254, C07C 6902

Patent

active

057032726

ABSTRACT:
A process for preparing a carboxylic acid ester which includes subjecting a carboxylic acid and an alcohol or a phenol to an esterification reaction in the presence of a silica-titania catalyst. The silica-titania catalyst is prepared by adding an acidic solution containing a silicon compound and a titanium compound dissolved therein to a solution of a basic compound to bring about co-precipitation, in which the acidic solution is a nitric acid-acidic solution or a sulfuric acid-acidic solution, a ratio of the amount (gram equivalent) of nitric acid or sulfuric acid to the amount (mol) of the silicon compound in the acidic solution is 0.5 to 50 and the amount of the titanium compound in the acidic solution is such that a ratio of titania (TiO.sub.2) in the silica-titania catalyst is 1 to 50% by weight.

REFERENCES:
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patent: 4176089 (1979-11-01), Cull
patent: 4547557 (1985-10-01), McDaniel
patent: 4981831 (1991-01-01), Knudsen et al.
patent: 5162283 (1992-11-01), Moini
patent: 5189201 (1993-02-01), Sano et al.
patent: 5587349 (1996-12-01), Abe et al.

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