| 刘声.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[J].分子催化,2010,(5):0 |
| 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 H2O2 Catalyzed by Reaction-Controlled Phase-Transfer Catalyst under Solvent-free Conditions |
| 投稿时间：2010-07-19 修订日期：2010-08-17 |
| DOI： |
| 中文关键词: 氯丙烯，反应控制相转移催化剂，H2O2, 环氧化，环氧氯丙烷 |
| 英文关键词:Allyl chloride, Reaction-controlled phase-transfer catalyst, hydrogen peroxide, epoxidation, epichlorohydrin |
| 基金项目:国家重点基础研究发展计划（973计划）;国家自然科学基金项目（面上项目，重点项目，重大项目）;国家教育部回国人员科研启动基金 |
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| 中文摘要: |
| 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 oC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。 |
| 英文摘要: |
| 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 oC, 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 was investigated by 31P MAS NMR spectra.. The results demonstrated NaH2PO4 can keep the catalyst stable. |
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