首页 | 本学科首页   官方微博 | 高级检索  
     检索      

钛硅分子筛催化1-丁烯环氧化研究
引用本文:马书启,李钢,王祥生,金长子,刘民,郭新闻.钛硅分子筛催化1-丁烯环氧化研究[J].燃料化学学报,2005,33(4):509-512.
作者姓名:马书启  李钢  王祥生  金长子  刘民  郭新闻
作者单位:Department of Catalytical Chemistry and Engineering, Dalian University and Technology, Dalian 116012, China; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China
基金项目:高等学校全国优秀博士学位论文作者专项资金(200346).
摘    要:自1983年Taramasso等报导TS-1的合成以来,钛硅分子筛的合成及应用一直是分子筛催化领域的热点。经典TS-1合成方法采用四丙基氢氧化铵(TPAOH)为模板剂,合成成本较高、条件苛刻,限制了其应用。用四丙基溴化铵(TPABr)为模板剂代替TPAOH,能够成功地合成TS-1。不同孔道结构的钛硅分子筛,如Ti-β、Ti-MCM-41、Ti-HMS等弥补了TS-1较小孔径的缺点,进一步扩大了钛硅分子筛的应用。本文以不同合成方法得到的TS-1及中孔Ti—HMS为催化剂,双氧水为氧化剂,1-丁烯环氧化合成1,2-环氧丁烷,研究了不同钛硅分子筛对1-丁烯环氧化反应的催化性能。

关 键 词:钛硅分子筛  TS-1  Ti-HMS  1-丁烯  环氧化反应  环氧丁烷  
文章编号:0253-2409(2005)04-0509-04
收稿时间:2004-12-06
修稿时间:2005-06-12

1-Butylene epoxidation over various titanosilicate molecular sieves
MA Shu-qi,LI Gang,WANG Xiang-sheng,JIN Chang-zi,LIU Min,GUO Xin-wen.1-Butylene epoxidation over various titanosilicate molecular sieves[J].Journal of Fuel Chemistry and Technology,2005,33(4):509-512.
Authors:MA Shu-qi  LI Gang  WANG Xiang-sheng  JIN Chang-zi  LIU Min  GUO Xin-wen
Abstract:1-Butylene epoxidation was catalyzed by microporous titanosilicate molecular sieves TS-1 synthesized by different methods and mesoporous titanosilicate molecular sieves Ti-HMS, using dilute hydrogen peroxide solution as oxidant. The effect of the Si/Ti molar ratio of the catalyst TS-1 and Ti-HMS on their performance was investigated. Conventional TS-1 has smaller crystal size and higher activity than that of TS-1 synthesized by using TPABr as template or the method of gas-solid phase. The TS-1 synthesized by using TPABr as template exhibits the highest selectivity to 1, 2-epoxybutane (BO). With the increase of Ti content in molecular sieves, the conversion of H_2O_2 increases. The catalytic activity of mesoporous Ti-HMS is lower than that of TS-1, and large amount of H_2O_2 is decomposed in 1-butylene epoxidation. The primary reason for low activity of Ti-HMS in 1-butylene epoxidation is that Ti-HMS has poorer hydrophobicity property than TS-1.
Keywords:titanosilicate molecular sieves  epoxidation  1-butylene  TS-1  Ti-HMS  1  2-epoxybutane
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《燃料化学学报》浏览原始摘要信息
点击此处可从《燃料化学学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号