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1,6-己二醇气相催化脱氢合成ε-己内酯的研究
Vapor-phase dehydrogenation of 1,6-hexanediol to ε-caprolactone over CuO/Cr2O3/Al2O3 catalyst
【摘要】 以1,6-己二醇为原料,自制的CuO/Cr2O3/Al2O3为催化剂,通过气相催化脱氢的方法合成了ε-己内酯,研究了反应温度、重时空速、氢醇比等因素对反应的影响,获得了最佳反应条件(反应温度为300℃,HDO重时空速为0.08 h-1,氢醇比为8.2),此时HDO转化率达到100%,CL产率高达66.2%。
【Abstract】 Preparation of ε-caprolactone(ε-CL) by dehydrogenation of 1,6-hexanediol(HDO) over CuO/Cr2O3/Al2O3 catalyst is investigated.The effects of reaction temperature,weight hourly space velocity(WHSV),H2/HDO molar ratio on the dehydrogenation reaction are studied.The optimal reaction conditions are obtained as follows:300℃ of reaction temperature,0.08/h of WHSV of HDO,8.2 of H2/HDO molar ratio,which give an 100% of HDO conversion and a ε-CL yield of 66.2%.
【关键词】 1,6-己二醇;
ε-己内酯;
气相催化;
脱氢;
【Key words】 1,6-hexanediol; ε-caprolactone; vapor-phase reaction; dehydrogenation;
【Key words】 1,6-hexanediol; ε-caprolactone; vapor-phase reaction; dehydrogenation;
【基金】 国家杰出青年科学基金资助课题(50525309)
- 【文献出处】 现代化工 ,Modern Chemical Industry , 编辑部邮箱 ,2007年10期
- 【分类号】TQ225.24
- 【被引频次】11
- 【下载频次】438