Process for preparing di-alkyl carbonates
AssigneeEnichem Synthesis S.p.A.
InventorsUgo Romano, Franco Rivetti
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Abstract
A process is described for preparing a di-alkyl carbonate, e.g. dimethylcarbonate, via oxidative carbonylation of the corresponding alkanol, e.g. methanol, in the presence of a catalyst system which comprises a copper alkoxy-halide and a quantity of between 0.5 and 10 mol % of C.sub.u X.sub.2 or HX with respect to the total moles of copper. In this manner extremely high di-alkyl carbonate formation rates are obtained.
Claims3
A process for increasing the rate of formation of di-alkyl carbonate via oxidative carbonylation of the corresponding lower alkanol in the presence of a catalyst system wherein said catalyst system consists essentially of a copper alkoxy halide and a quantity of between 0.5 and 10 mol % of CuX.sub.2 with respect to the total moles of copper, where X is a halogen atom;
- and wherein the overall halogen to copper molar ratio ranges from 1.005 to 1.100.
Dependencies are inferred from the claim text.