文献类型：期刊文章

作　　者：王春刚[1] 姜春杰[1] 胡长文[1]

机构地区：[1]东北师范大学多酸化学研究所,长春130024

出　　处：《高等学校化学学报》

基　　金：国家自然科学基金 (批准号 :2 0 3 3 10 10 ;2 0 2 710 0 7);高等学校博士学科点专项科研基金 (批准号 :2 0 0 3 0 0 0 70 14 )资助

年　　份：2004

卷　　号：25

期　　号：7

起止页码：1325-1327

语　　种：中文

收录情况：AJ、BDHX、BDHX2000、CAS、CSCD、CSCD2011_2012、EI、IC、JST、RCCSE、RSC、SCIE、SCOPUS、WOS、ZGKJHX、核心刊

摘　　要：In the presence of Dawson-type polyoxotungstate, α 2-[(n-C 4H 9) 4] (11-n)P 2W 17O 61(M n+·Br)[abbreviated as P 2W 17M·Br, M=Co(Ⅱ), Mn(Ⅲ), Cu(Ⅱ)] and saturated [(n-C 4H 9) 4N] 6P 2W 18O 62(abbreviated as P 2W 18), cycloaddition reaction of carbon dioxide to propylene oxide were studied under moderate reaction conditions without any additional organic solvents. The experimental results indicated that the synthesis of propylene carbonate was completed in 98% yield and 100% selectivity by using {P 2W 17Co·Br} as the catalyst, while the P 2W 18 complex showed the lowest catalytic activity with less than 1% yield of propylene carbonate. The dependency of the catalytic activity on transition metal of mono-substituted polyoxometalate, P 2W 17M·Br, as well as the nucleophilicity of the bromide ion was concluded from the process analysis.

关 键 词：Dawson结构杂多酸盐  催化剂  碳酸丙烯酯 环氧丙烷 二氧化碳 环加成 有机溶剂

分 类 号：TQ225.52] TQ421.12