Catalytic synthesis of acetals and ketals with H3PW6Mo6O40/TiO2  

作　　者：YANG Shui-jin TONG Wen-long Philippe G. Merle 

机构地区：[1]Hubei Key Laboratory of Bioanalytical Technique, Department of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, China [2]Department of Chemistry and Biochemistry, Concordia University, Montreal H4B 1R6, Canada

出　　处：《Journal of Chemistry and Chemical Engineering》2007年第1期8-11,39,共5页化学与化工（英文版）

基　　金：Acknowledgements： This work was financially supported by the Natural Science Foundation of Hubei Province, China （No. 2005ABA053） and the National Natural Science Foundation of China （No. 20471044）.

摘　　要：A new environmental friendly catalyst, H3PW6Mo6O40/TiO2 was prepared. The optimum conditions have been found, that is, mass ratio of m （TiO2）： m （H3PW6Mo6O40） is 1：2.0, volume of water is 30 mL, the reflux reaction time is 2 h, and activated temperature is 150 ℃. H3PW6Mo6O40/TiO2 was used as catalyst in catalytic synthesis ofacetals and ketals. Effects ofn （aldehyde（ketone））： n （glycol）, catalyst dosage and reaction time on yield were investigated. Optimal conditions were： n（aldehyde （ketone））： n （glycol）=1.0 ： 1.4; mass fraction of catalyst to reactants, 0.8%; reaction time, 1.0 h and cyclohexane as water-stripped reagent, 10 mL. Under these conditions, yields of acetals and ketals can reach 53.0% -86.9 0%

关 键 词：H3PW6MO6O40 TiO2 ACETALATION KETALATION CATALYSIS 

分 类 号：TQ224.7[化学工程—有机化工] TQ225.241