Studies on the Interaction of 12-Tungstophosphoric Acid and Diethylene Glycol
Studies on the Interaction of 12-Tungstophosphoric Acid and Diethylene Glycol出 版 物:《Chemical Research in Chinese Universities》 (高等学校化学研究(英文版))
年 卷 期:1993年第9卷第4期
页 面:317-323页
核心收录:
基 金:Supported by the National Natural Science Foundation of China
主 题:IR NMR Diethylene glycol Proton oxonium ions
摘 要:The homogeneous system of 12-tungstophosphoric acid and diethylene glycol was studied using IR and NMR spectra. It was found that the protons in 12-tungstophosphoric acid formed proton oxonium ions with the hydroxyl oxygen in diethylene glycol by hydrogen-bonds, and the formed proton oxonium ions could react with the terminal oxygens of heteropoly anions. The dehydration-cyclization mechanism of diethylene glycol in the presence of heteropoly acid was also proposed.