无溶剂条件下反应控制相转移催化氯丙烯氧化制环氧氯丙烷  

Epoxidation of Allyl Chloride with H_2O_2 Catalyzed by Reaction-Controlled Phase-Transfer Catalyst under Solvent-free Conditions

作　　者：刘声[1,2] 张生军[1] 赵公大[1] 李军[1] 安庆大[2] 高爽[1] 

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116023 [2]大连工业大学,辽宁大连116034

出　　处：《分子催化》2010年第5期387-391,共5页Journal of Molecular Catalysis(China)

基　　金：国家重点基础研究发展规划(973)资助项目(2009CB623505);国家自然科学基金(20643006)资助项目;教育部留学回国人员科研启动基金资助项目

摘　　要：系统地研究了无溶剂条件下,H2O2为氧源,反应控制相转移催化剂[(C16H33(70%)+C18H37(30%))N(CH3)3]3[PW4O16]催化氯丙烯环氧化制环氧氯丙烷反应.结果表明,在氯丙烯/H2O2/催化剂(摩尔比)=400∶100∶1条件下,50～55℃反应3 h,环氧氯丙烷的收率为85～87%.在NaH2PO4存在下,催化剂循环使用5次,活性无明显降低,新鲜催化剂和回收催化剂的31P MAS NMR谱分析结果表明NaH2PO4对催化剂结构和组成具有稳定作用.Epoxidation of allyl chloride without solvent catalyzed by reaction controlled phase transfer catalyst [（C16H33（70%）＋C18H37（30%））N（CH3）3]3[PW4O16] using H2O2 as oxidant was described.Under the optimized conditions（allyl chloride / H2O2/catalyst（molar ratio） =400∶100∶1,50～55 ℃,3 h.）,85～87% yield of epichlorohydrin was obtained.The catalyst can be reused with good stability in the presence of NaH2PO4.The structure and the composition of the fresh catalyst and the recovered catalysts were investigated by 31P MAS NMR spectra..The results demonstrated that NaH2PO4 could keep the catalyst stable.

关 键 词：氯丙烯 反应控制相转移催化剂 H2O2 环氧化 环氧氯丙烷 

分 类 号：O643.32[理学—物理化学]