Chemical Research in Chinese Universities ›› 1993, Vol. 9 ›› Issue (4): 317-323.

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Studies on the Interaction of 12-Tungstophosphoric Acid and Diethylene Glycol

ZHAO Yu-sheng, HUA Shi-ying, WU Tong-hao, WEI Quan   

  1. Department of Chemistry, Jilin University, Changchun, 130023
  • Received:1992-10-30 Online:1993-12-24 Published:2011-08-17
  • Supported by:

    Supported by the National Natural Science Foundation of China

Abstract: 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.

Key words: IR, NMR, Diethylene glycol, Proton oxonium ions