Process for the preparation of dialkyl oxalates
AssigneeUbe Industries, Ltd.
InventorsToshiharu Yamasaki, Masao Eguchi, Schinichiro Uchiumi, Keigo Nishihira, Masayoshi Yamashita, Hiroshi Itatani
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Abstract
A process for the preparation of dialkyl oxalates by reacting an aliphatic alcohol with carbon monoxide under pressure, which comprises carrying out the reaction in the presence of (a) a catalyst comprising a platinum group metal or a salt thereof, and (b) an accelerator composed of one or more compounds selected from the group consisting of nitric acid and nitrogen oxides.
Claims12
A process for the preparation of dialkyl oxalates by reacting an alkanol having from 1 to 6 carbon atoms with carbon monoxide under pressure, which comprises carrying out the reaction in the presence of
- (a) a catalytic amount of a catalyst comprising a platinum group metal or a salt thereof,
- (b) an accelerating amount of an accelerator composed of one or more compounds selected from the group consisting of nitric acid and nitrogen oxides, and
- (c) molecular oxygen.
Dependencies are inferred from the claim text.