Abstract
A new catalyst of copper ion-containing ionic liquids immobilized on SBA-15 was prepared and characterized by XRD, HRTEM, N 2 physical adsorption, FTIR, elemental analysis, TGA, AA, and XPS. The CuBr 2–PyIL/SBA-15 catalyst was found to be more active and selective than CuBr 2 and CuBr 2/SBA-15 prepared by the conventional impregnation method in the synthesis of dimethyl carbonate by oxidative carbonylation of methanol. Although the CuBr 2–PyIL/SBA-15 catalyst deactivated rapidly during the initial three runs, it still maintained a comparable activity with the fresh CuBr 2/SBA-15 catalyst after three recycling.
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