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Mesoporous silica KIT-1 supported with active polytungstophosphate anion of PWxOy species was synthesized and successfully used to catalyze the alkene epoxidation in the environmentally benign solvent of ethyl acetate. The immobilized catalyst of KIT-N+-PWxOy was stable and robust for the epoxidation. In addition, the active species of PWxOy, the molecular sieve support of KIT-1 and the...
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