Nano-porous Composites Based on Liquid： Synthesis, Characterization, Esterification Heteropolyacid Functionalized Ionic and Catalytic Performance in  

纳米多孔离子液体复合材料的合成及其在酯化反应中的应用

作　　者：周夫东[1] 储伟[1,2] 戴晓雁[1] 罗仕忠[1] 

机构地区：[1]四川大学化学工程学院,成都610065 [2]四川大学绿色化学教育部重点实验室,成都610064

出　　处：《Chinese Journal of Chemical Physics》2010年第4期473-478,I0002,共7页化学物理学报（英文）

摘　　要：Fhnctionalized ionic liquid samples （bmim-PW12） were synthesized by 1-butyl-3-methyl- imidazolium bromide （bmimBr） and 12-phosphotungstic heteropolyacid （PW12）. The samples were annealed at 100-450 ℃ and were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscope, thermal gravity-DTG, brunauer emmett teller, and NHa-temperature programmed desorption. The results showed that the bmim-PW12 samples were crystal and maintained intact Keggin structure. The organic parts of those samples were partly decomposed at a temperature more than 350 ℃. The sample annealed at 400 ℃ exhibited nano-porous structure, strong acidity, and excellent catalytic activity on the esterification of n-butanol with acetic acid. The higher ester yield was obtained when the mass ratio of catalyst over the reactants amount was 5% for bmim-PW12 catalyst annealed at 400 ℃.

关 键 词：Ionic liquid 1-Butyl-3-methyl-imidazolium bromide Phosphotungstic heteropolyacid Annealing treatment ESTERIFICATION 

分 类 号：O[理学]