Method for catalyzing olefin epoxidation by heteropolyacid quaternary ammonium salt

• Main Authors: LYU YING, ZHAO GONGDA, GAO SHUANG
• Format: Patent
• Language: Chinese; English
• Published: 09.06.2020
• Subjects: CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY

The invention provides a method for catalyzing olefin epoxidation by a heteropolyacid quaternary ammonium salt. According to the method, olefin and an oxidizing agent react in the presence of a heteropolyacid quaternary ammonium salt catalyst, an auxiliary agent and an organic solvent, wherein the organic solvent is 3-chloropropene, the reaction temperature is 25-80 DEG C, the reaction time is 0.5-10 h, the catalyst is a solid after the reaction is finished, the catalyst can be recycled through simple separation, and a reaction solution is distilled to obtain a target epoxide. The method has the advantages of simple process, mild conditions, easy separation and recycling of the catalyst, environmental protection, and great industrial application prospect. 本发明提供了一种杂多酸季铵盐催化烯烃环氧化的方法，烯烃、氧化剂在杂多酸季铵盐催化剂、助剂和有机溶剂存在下进行反应，其中有机溶剂为3-氯丙烯，反应温度25～80℃，反应时间0.5～10h，反应结束后催化剂为固体，可以通过简单分离回收使用，反应液通过蒸馏得到目标环氧化物。本发明工艺简单，条件温和、催化剂易于分离和回收套用、绿色环保，具有很大的工业应用前景。