Study on Pervaporation Membranes for Removing Methanol from C5 or Methyl Tert-butyl Ether  Mixtures

Abstract

Abstract: Several pervaporation membranes, cellulose acetate (CA), polyvinylbutyral (PVB), poly(MMA-
co-AA),MMA-AA-BA, CA/PVB blend and CA/poly(MMA-co-AA) blend, were prepared, and their
pervaporation properties were evaluated by separation of methanol/C5 or methanol/MTBE
(methyl tert-butyl ether). The results shows that the CA composite membrane has a high
separation performance (flux Jmethanol = 350 g.m-2.h-1 and separation factor α＞400) for
methanol/C5 mixtures, and the pervaporation characteristics of MMA-AA-BA copolymer
membranes changes with the ratio of copolymer. For CA/poly(MMA-co-AA) blend membrane, the
pervaporation performance is improved in comparison with CA or poly(MMA-co-AA) membrane.
From the experiment of CA/PVB blend membranes for methanol/MTBE mixture, it is found that
the compatibility of blends may affect the separation features of blend membrane.

Key words: pervaporation membrane, methanol, C5, methyl tert-butyl ether, blend

摘要： Several pervaporation membranes, cellulose acetate (CA), polyvinylbutyral (PVB), poly(MMA-
co-AA),MMA-AA-BA, CA/PVB blend and CA/poly(MMA-co-AA) blend, were prepared, and their
pervaporation properties were evaluated by separation of methanol/C5 or methanol/MTBE
(methyl tert-butyl ether). The results shows that the CA composite membrane has a high
separation performance (flux Jmethanol = 350 g.m-2.h-1 and separation factor α＞400) for
methanol/C5 mixtures, and the pervaporation characteristics of MMA-AA-BA copolymer
membranes changes with the ratio of copolymer. For CA/poly(MMA-co-AA) blend membrane, the
pervaporation performance is improved in comparison with CA or poly(MMA-co-AA) membrane.
From the experiment of CA/PVB blend membranes for methanol/MTBE mixture, it is found that
the compatibility of blends may affect the separation features of blend membrane.

关键词: pervaporation membrane;methanol;C5;methyl tert-butyl ether;blend

ZHANG Lin, CHEN Huanlin, ZHOU Zhijun, QIAN Jinwen, GAO Congjie, PAN Zuren. Study on Pervaporation Membranes for Removing Methanol from C₅ or Methyl Tert-butyl Ether
Mixtures[J]. .

张林, 陈欢林, 周志军, 钱锦文, 高从堦, 潘祖仁. 用于脱除C₅及MTBE中甲醇的渗透汽化膜研究[J]. CIESC Journal.

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Study on Pervaporation Membranes for Removing Methanol from C₅ or Methyl Tert-butyl Ether
Mixtures

用于脱除C₅及MTBE中甲醇的渗透汽化膜研究

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