以聚苯乙烯-二乙烯苯接枝磷钨酸季铵盐为三相相转移催化剂,以H2O2为氧化剂,KCl为助催化剂,研究了环戊烯(CPE)合成环氧环戊烷(CPEO)的无溶剂工艺. 讨论了催化剂和助催化剂用量、反应温度、反应时间、环戊烯与H2O2摩尔比对反应的影响. 确定了无溶剂环氧环戊烷合成反应的条件为(以0.056 mol H2O2计):催化剂1.0 g、助催化剂0.025 g、反应温度40 ℃、反应时间5 h、n(CPE): n(H2O2)=2.1: 1.0. CPEO的平均收率约为96%. 催化剂回收重复使用6次活性无明显降低.
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