水热合成H_6P_2W_(18)O_(62)及其催化合成环己烯的应用研究  

Preparation of Phosphotungstic Acid with Dawson Structure through Hydrothermal Method and Its Catalytic Activity in the Synthesis of Cyclohexene

作　　者：柳闽生[1] 曹小华[2] 周宏[1] 赵新萍[2] 

机构地区：[1]南京晓庄学院化学系,江苏南京210017 [2]九江学院化学化工学院,江西九江332005

出　　处：《化学世界》2008年第12期741-743,707,共4页Chemical World

基　　金：江西省自然科学基金(0520037);江西省教育厅科技资助项目(GJJ09597)

摘　　要：通过水热法合成出Dawson结构磷钨杂多酸，并考察了其催化环己醇脱水制备环己烯的性能。结果表明：当ω（H6P2W18O62·nH2O）=4．2％（以环已醇质量计），在170～180℃反应35min，环己烯收率可达93．0％。催化剂重复使用5次后，收率仍可达到75．0％。本法是一种催化合成环己烯的简单易行的典型绿色工艺。Phosphotungstic acid with Dawsoh structure was prepared by hydrothermal method, and it was applied in the catalytic synthesis of cyclohexene. When the mass of the catalyst used was 4. 2% of the quantity of cyclohexanol, the reaction temperature was about 170-180 ℃, and the reaction time was 35min, the yield of cyclohexene could reach more than 93.0%. The catalyst could be reused for 5 times and the yield was still above 75.0%. It was a typical simple and practical new ＂green＂ route to the synthesis of cyclohexene.

关 键 词：H6P2W18O62 环己醇 环己烯 

分 类 号：O643[理学—物理化学] O621[理学—化学]