Abstract
The HTS-1 (Hollow Titanium silicalite molecular sieve) catalyst with bifunctional catalysis showed superior catalytic activity in the epoxidation of olefins and the oxidation of alcohols. The competitive oxidation law of enols in the HTS-1/H2O2 oxidation system was studied. The effects of various reaction conditions, such as the reaction temperature, solvent, catalyst type, and the amount of additive, were examined. The results indicated that the HTS-1 catalyst preferentially catalyzes AA epoxidation to produce glycidol (GLY) efficiently and selectively using polar proton solvent and proper temperature. Using alkaline additives can greatly improve the catalytic activity of HTS-1 and selectivity of glycidol. Under optimal conditions, the conversion of AA can rate to 77%, and the selectivity of GLY can also achieve 91%.
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