Polyaniline Supported 12-Tungstosilicic Acid as the Catalyst for Acetals and Ketals Synthesis  

作　　者：杨永金 PHILIPPE G Merle 

机构地区：[1]Hubei Key Laboratory of Pollutant Analysis & Reuse Technology,College of Chemistry and Environmental Engineering, Hubei Normal University [2]Department of Chemistry and Biochemistry, Concordia University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2009年第3期371-375,共5页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Natural Science Foundation of Hubei Province (No.2005ABA053);Hubei Key Laboratory of Pollutant Analysis & Reuse Technology;the National Natural Science Foundation of China (No. 20471044)

摘　　要：A novel environmental friendly catalyst, H4SiW12O40/PAn was prepared and identified by FT-IR, XRD and TG/DTA. The optimal synthetic protocol was a PAn to H4SiW12O40 mass ratio of 1 ： 1, a 20 mL of methanol and a reaction time of 2 h at reflux. It was used in catalytic synthesis of ten important ketals and acetals with a high catalytic activity. With an aldehyde/ketone to glycol molar ratio of 1 ： 1.5 and a 1 wt% catalyst loading, the yields of ketals and acetals could reach 60.0%- 93.8 % after 1 h.A novel environmental friendly catalyst, H4SiW12O40/PAn was prepared and identified by FT-IR, XRD and TG/DTA. The optimal synthetic protocol was a PAn to H4SiW12O40 mass ratio of 1 ： 1, a 20 mL of methanol and a reaction time of 2 h at reflux. It was used in catalytic synthesis of ten important ketals and acetals with a high catalytic activity. With an aldehyde/ketone to glycol molar ratio of 1 ： 1.5 and a 1 wt% catalyst loading, the yields of ketals and acetals could reach 60.0%- 93.8 % after 1 h.

关 键 词：12-tungstosilicic acid POLYANILINE ACETAL KETAL catalysis 

分 类 号：O633.2[理学—高分子化学]