Carrier-supported catalyst and process for making mono-carboxyli

Details Carrier-supported catalyst and process for making mono-carboxyli Carrier-supported catalyst and process for making mono-carboxyli

1986-03-14

1988-10-11

Killos, Paul J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260546, 502102, 502112, 502103, 502119, C07C 5154

Patent

active

047769874

ABSTRACT:
Monocarboxylic anhydrides of the general formula (RCO).sub.2 O are made by reacting a carboxylic acid ester or dialkylether of the general formulae RCOOR and ROR, respectively, in which R stands for one and the same alkyl radical having from 1-4 carbon atoms, with carbon monoxide in gas phase, in the presence of iodine or bromine or their compounds as a reaction promoter and also in the presence of a carrier-supported catalyst containing noble metal compounds of group VIII of the Periodic System, at temperatures of 130.degree.-400.degree. C. and under pressures of 1-150 bars. To this end, a novel carrier-supported catalyst is used in which the carrier material has a noble metal/chelate-compound formed of the noble metal compound and a chelator containing organonitrogen, organophosphorus, organoarsenic or organosulfur groups applied to it.

REFERENCES:
patent: 4083803 (1978-04-01), Oswald et al.
patent: 4115444 (1978-09-01), Rizkalla
Kambara, Shu et al., Chemical Abstracts vol. 46 (1952) #1796f.

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