ZHU Lifang, CAI Bangxiao, GAO Congjie, et al. MASS TRANSPORT ANALYSIS OF SEPARATION OF METHANOL/MTBE MIXTURES BY PERVAPORATION——DIFFUSION OF SINGLE COMPONENT IN MEMBRANE[J]. CIESC Journal, 2003, (2): 164-169.
ZHU Lifang, CAI Bangxiao, GAO Congjie, et al. MASS TRANSPORT ANALYSIS OF SEPARATION OF METHANOL/MTBE MIXTURES BY PERVAPORATION——DIFFUSION OF SINGLE COMPONENT IN MEMBRANE[J]. CIESC Journal, 2003, (2): 164-169.DOI:
The equilibrium solubility and sorption curves for methanol(MeOH) and methly ter-butyl ether(MTBE) in cellulose acetate (CA) membrane at 298.15K,305.75K and 312.95K were measured by quartz crystal microbalance method. The results showed that mass transport processes of MeOH and MTBE in CA membrane belonged to Fickion diffusion .Both the equilibrium solubility and sorption rate of MeOH were much higher than that of MTBE
which meant that CA membrane had excellent separation performance for MeOH/MTBE mixtures. At the same sorption temperature
the equilibrium solubility and sorption rate increased with increasing sorption vapor pressure. The diffusion of MeOH and MTBE in CA membrane could be explained by Eyring’s “hole” theory of diffusion.