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  • 1 State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 730000, Lanzhou, China, wyqiu@lzu.edu.cn
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Abstract

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 immobilized catalyst of KIT-N+-PWxOy were characterized by FT-IR, UV–vis, XRD, 31P MAS NMR, SEM, N2 adsorption/desorption, ICP and XPS in detail.

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