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Study on the performance of poly(vinyl alcohol) -poly(ethylene imine) blend membrane for separation of dimethyl carbonate and CO2

Authors： ZHANG Biao， YU Lixin， GUO Changhe

Units： State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 10084, China

KeyWords： dimethyl carbonate (DMC); poly(ethylene imine) (PEI); CO2; membrane separation; poly(vinyl alcohol)(PVA)

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2012,32(2):36-40

Abstract：

This study focuses on the preparation of the membrane for separation of dimethyl carbonate(DMC) and CO2 system. Poly(ethylene imine) (PEI) was selected as carrier to transport CO2. Poly(vinyl alcohol) was used as a base material. In general, the flux for pure CO2 increases with the PEI content. Flux for the DMC/CO2 system increases with PEI content and the pressure difference. The separation factor changes much with the content of PEI, but little with pressure. At 20℃, 0.5MPa pressure difference, 40% of PEI content, and membrane thickness of 35μm, the separation factor is 36, and the flux is 4.8g / (m2h).

Funds：

二氧化碳的吸收法捕集技术，国家863计划项目（2008AA062301）

AuthorIntro：

张飚（1985—），男，河北石家庄人，清华大学化学工程系，硕士研究生。通讯联系人yulixin@mail.tsinghua.edu.cn

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