Acta Phys. -Chim. Sin. ›› 1993, Vol. 9 ›› Issue (02): 242-246.doi: 10.3866/PKU.WHXB19930219

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Application of Pervaporation Membrane to Catalytic Esterification Reaction

Gao Zi; Yue Ying-Hong; Li Wen-Jun   

  1. Department of Chemsitry, Fudan University, Shanghai 200433; Department of Material Science, Fudan University, Shanghai 200433
  • Received:1991-10-19 Revised:1992-04-06 Published:1993-04-15
  • Contact: Gao Zi

Abstract: Studies on pervaporation separation of alcohol/water mixture and pervaporation-aided catalytic esterification reaction have been carried out using a laboratory reactor equipped with a hydrophilic polyvinyl alcohol membrane. It was found that the flux and the separation factor of the membrane varied with the composition and temperature of the alcohol/water mixture and the thickness of the membrane. On the other hand, the rate and conversion of the esterification reactions increased as the flux and the A/V ratio of the membrane were increased. The conversion of the pervaporation-aided esterification of acetic acid by ethanol approached 96—99% in our reaction device, and the time required to attain 95% conversion t_(95) reduced by half as compared with that of the blank reaction. For the pervaporation-aided esterification of salicylic acid by methanol, the reaction conversion increased by 1.5 times as well.

Key words: Polyvinyl alcohol pervaporation membrane, Pervaporation aided catalytic esterification, Esterification of acetic acid by ethanol, Esterification of salicylic acid by methanol