Catalyst for oxidative carbonylation of methanol to synthesize dimethyl carbonate, and preparation method and applications thereof
AssigneeChengdu Organic Chemistry Co., Ltd., Chinese Academy of Sciences
InventorsGongying Wang, Mingyu Cao, Yuansheng Bai, Qingyin Wang, Yi Zeng
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Abstract
A catalyst for oxidative carbonylation of methanol to obtain dimethyl carbonate, a preparation method and applications thereof are disclosed. The catalyst includes a carrier being a porous carbon-nitrogen material, and an active component being Cu, where the weight of Cu accounts for 5-15 wt % of the total weight of the catalyst. The catalyst exhibits good catalytic activity in the reaction of methanol oxidative carbonylation to synthesize dimethyl carbonate, has high space-time yield and selectivity, and the catalyst and the product are easy to separate.
Claims11
A catalyst, comprising:
- a carrier being a nitrogen-doped hierarchical porous carbon (NHPC);
- and
- an active component being Cu element;
- wherein a weight of Cu in the catalyst accounts for 5-15 wt % of a total weight of the catalyst;
- wherein the NHPC being obtained by mixing cellulose powder, ammonium oxalate, and sodium bicarbonate with a mass ratio of 1:(1-6):(1-6) and calcining at 700-900° C., and
- the copper-based catalyst supported by the NHPC being obtained by dissolving a copper salt in concentrated hydrochloric acid, adding deionized water, adding the porous carbon-nitrogen material obtained in the previous operation into the above solution, mixing and stirring sufficiently, vacuum drying after separation, and calcining in a 10% H2/N2 atmosphere in a reducing furnace at 100-600° C. for 1-5 h, and cooling to obtain the copper-based catalyst supported by the porous carbon-nitrogen material.
Dependencies are inferred from the claim text.