Catalysts used for producing carbonic acid esters and methods of producing carbonic acid esters using the same
AssigneeJgc Corporation
InventorsTakeshi Koyama, Masao Tonosaki, Nobuhiro Yamada, Kenji Mori
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Abstract
The present invention relates to a novel catalyst having a stable catalytic activity for catalyzing the reaction of an alcohol with carbon monoxide and oxygen to produce carbonic acid esters (i.e., carbonate), and also the present invention relates to a method of producing carbonic acid esters using this catalyst. The catalyst of the present invention comprises a copper halide and at least one hydroxide compound selected from a group consisting of alkali metal hydroxides and alkali earth metal hydroxides carried on a porous carrier, and also provide a process of regenerating a catalytic activity of the catalyst.
Claims21
A catalyst for producing carbonic acid esters by the reaction including oxidation-carbonylation of an alcohol, comprising a copper halide and at least one hydroxide compound selected from the group consisting of alkali metal hydroxides and alkali earth metal hydroxides carried on a porous carrier, Wherein a molar ratio of hydroxide group of the hydroxide compound to copper atom in the Copper halide is in the range of 0.3 to 2.0.
A catalyst for producing carbonic acid esters by the reaction including oxidation-carbonylation of an alcohol, comprising a copper halide and at least one hydroxide compound selected from the group consisting of alkali metal hydroxides and alkali earth metal hydroxides carried on a porous carrier;
- wherein the copper halide is a copper bromide or a copper chloride, the hydroxide compound is selected from a group consisting of sodium hydroxide, potassium hydroxide, lithium hydroxide and barium hydroxide;
- a molar ratio of hydroxide group of the hydroxide compound to copper atom in the copper halide is within the range of 0.3 to 2.0;
- and
- an amount of the copper halide is within the range of 1.5 to 20 wt % as Cu per total weight of the copper halide plus the porous carrier.
A catalyst for producing carbonic acid esters by the reaction including oxidation-carbonylation of an alcohol, which comprises a copper oxide halide carried on a porous carrier.
Dependencies are inferred from the claim text.