以苯乙烯为原料,分子氧为氧化剂,改性的钒磷氧化物为催化剂合成环氧苯乙烷.研究了金属修饰成分、 P/V比率、溶剂和温度等因素对反应性能的影响.结果表明, Ag-VPO催化剂对环氧苯乙烷具有最好的选择性,在P/V=1、乙腈为溶剂、 65 ℃的反应条件下,苯乙烯转化率为47.3%, 环氧苯乙烷选择性达98.0%.
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