高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (7): 1213.

• 研究快报 • 上一篇    下一篇

用聚电解质渗透汽化膜进行乙醇脱水

周志军, 陈欢林, 刘茉娥, 张颖   

  1. 浙江大学材料与化工学院, 杭州 310027
  • 收稿日期:2001-02-27 出版日期:2001-07-24 发布日期:2001-07-24
  • 通讯作者: 刘茉娥(1939年出生),女,教授,主要从事膜分离技术和化学工程研究.E-mail:chenhl@che.zju.edu.cn E-mail:chenhl@che.zju.edu.cn
  • 基金资助:

    国家自然科学基金重点项目(批准号:29836160

Pervaporation Dehydration of Alcohol with Polyelectrolyte Membrane

ZHOU Zhi-Jun, CHEN Huan-Lin, LIU Mo-E, ZHANG Ying   

  1. College of Material and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:2001-02-27 Online:2001-07-24 Published:2001-07-24

PDF (PC)

被引次数

23

关键词: 聚电解质, 渗透汽化, 膜, 乙醇脱水

Abstract: Polyelectrolytes have a high hydrophilicity and can be used in pervaporation(PV) dehydration of alcohol. Chitosan(CS) used as polycation polysaccharide and carboxymethyl cellulose(CMC) used as polyanion polysaccharide were chosen as PVmembrane materials. CSmembrane cross-linked with oxalic acid or citric acid and CS-CMCpolyelectrolyte membrane were prepared. The results showed that the polyelectrolyte membranes had an excellent PVperformance for alcohol dehydration. For example, when the separation factor gone up to 2300, the total flux of CS-CMCpolyelectrolyte membrane was above 800 g/(m2·h) in95% EtOHand at 72 ℃. The nature and content of cross-linking agents affected the separation properties of cross-linked CSmembrane. The total flux of the cross-linked CSmembrane increased with operating temperature increasing and corresponded to the Arrhenius equation.

Key words: Polyelectrolyte, Pervaporation, Membrane, Alcohol dehydration

中图分类号: 

TrendMD: