Catalyst and method for producing carbonic diesters

Details Catalyst and method for producing carbonic diesters Catalyst and method for producing carbonic diesters

1994-01-24

1995-04-11

Dees, Josee G.

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

Organic compounds

Carbonate esters

558271, 558272, 558273, 558274, 558277, C07C 6996

Patent

active

054059860

ABSTRACT:
A catalyst for synthesizing a carbonic diester includes at least one copper compound selected from among copper oxides, copper hydroxides, a salt of copper with a weak acid consisting of the elements other than halogen such as copper borates, and complexes or complex salts consisting of the elements other than halogen and formed with copper or a copper compound a and ligand. The catalyst has a high activity, a high reaction selectivity and excellent stability with a minimal risk of corroding equipment. The catalyst can include, as a co-catalyst component, a platinum-group metal such as palladium or a halogen-free platinum-group metal compound such as palladium acetate. The catalyst component may be supported on a carrier, for example, an activated carbon. A carbonic diester is advantageously produced by allowing an alcohol to react with carbon monoxide and oxygen in the presence of the catalyst. The corrosion due to the catalyst is considerably inhibited so that a dimethyl carbonate can be produced with an excellent stability for a long duration.

REFERENCES:
patent: 4105674 (1978-08-01), De Thomas et al.
patent: 4370275 (1983-01-01), Stammann et al.
patent: 4483998 (1984-11-01), Sanderson et al.
patent: 4604242 (1986-08-01), Harley et al.
patent: 5171874 (1992-12-01), Smith et al.
WO 87/07601, 17 Dec. 1987, PCT/US87/01309, Filed Jun. 5, 1987 Curnutt, Gerald L.

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