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Dehydration of isopropanol-water mixtures using a novel cellulose membrane prepared from cellulose/N-methylmorpholine-N-oxide/H2O solution
Mao, Zhiming1,2; Cao, Yiming1; Jie, Xingming1; Kang, Guodong1; Zhou, Meiqing1; Yuan, Quan1
关键词Cellulose Membrane Nmmo Pervaporation Dehydration Isopropanol
刊名SEPARATION AND PURIFICATION TECHNOLOGY
2010-03-30
DOI10.1016/j.seppur.2010.01.002
72期:1页:28-33
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Technology
类目[WOS]Engineering, Chemical
研究领域[WOS]Engineering
关键词[WOS]HOLLOW-FIBER MEMBRANES ; MIXED MATRIX MEMBRANES ; N-OXIDE SOLUTION ; PERVAPORATION DEHYDRATION ; POLY(VINYL ALCOHOL) ; BLEND MEMBRANES ; SEPARATION ; CHITOSAN ; SOLVENTS ; FILMS
英文摘要A novel cellulose membrane used for isopropanol (IPA) dehydration was prepared by using N-methylmorpholine-N-oxide monohydrate (NMMO center dot H2O) as the solvent that can dissolve cellulose through a purely physical process. Scanning electron microscopy (SEM) images show that the prepared membrane had a homogeneously dense structure after natural drying. X-ray diffraction (XRD) and mechanical properties characterizations show that the prepared cellulose membrane owned much higher crystallization degree and better mechanical strength compared with traditional cellulose acetate (CA) or cellophane membranes coming from chemical process. The effects of operation conditions including feed concentration and operation temperature on pervaporation (PV) performance were investigated systemically. The results indicate that the permeation flux increased obviously with the increase of either water concentration in feed or operation temperature. Under the condition of 20 wt.% water-containing IPA feed and at 65 degrees C, a highest total flux of 349 g/m(2) h was achieved with a lowest water content in permeate of 99.50 wt.% (with a separation factor of 972) among all the tested conditions. Water content in permeate reached 99.97 wt.% (with a separation factor of 61,271) with a total flux of 13.4 g/m(2) h at the condition of 5 wt.% water in feed at 25 degrees C. Compared with other pure polymer membranes such as chitosan and poly(vinyl alcohol) (PVA), the prepared novel cellulose membranes exhibited acceptable fluxes and much higher separation factors. All these results demonstrate that cellulose membrane has great application potential in IPA dehydration process. (C) 2010 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000276720300005
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/141818
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Mao, Zhiming,Cao, Yiming,Jie, Xingming,et al. Dehydration of isopropanol-water mixtures using a novel cellulose membrane prepared from cellulose/N-methylmorpholine-N-oxide/H2O solution[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2010,72(1):28-33.
APA Mao, Zhiming,Cao, Yiming,Jie, Xingming,Kang, Guodong,Zhou, Meiqing,&Yuan, Quan.(2010).Dehydration of isopropanol-water mixtures using a novel cellulose membrane prepared from cellulose/N-methylmorpholine-N-oxide/H2O solution.SEPARATION AND PURIFICATION TECHNOLOGY,72(1),28-33.
MLA Mao, Zhiming,et al."Dehydration of isopropanol-water mixtures using a novel cellulose membrane prepared from cellulose/N-methylmorpholine-N-oxide/H2O solution".SEPARATION AND PURIFICATION TECHNOLOGY 72.1(2010):28-33.
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