QQ客服 官方微博 反馈留言

	Anti-trade-off in dehydration of ethanol by novel PVA/APTEOS hybrid membranes
	Zhang, Qiu Gen ; Liu, Qing Lin ; Liu QL(刘庆林) ; Jiang, Zhong Ying ; Chen, Yu
	2006-10
关键词	poly(vinyl alcohol) hybrid membranes pervaporation gamma-aminopropyl-triethoxysilane composite membranes
英文摘要	Novel organic-inorganic hybrid membranes were prepared through sol-gel reaction of poly(vinyl alcohol) (PVA) with gamma-aminopropyltriethoxysilane (APTEOS) for pervaporation (PV) separation of ethanol/water mixtures. The membranes were characterized by FTIR, EDX, WXRD and PALS. The amorphous region of the hybrid membranes increased with increasing APTEOS content, and both the free volume and the hydrophilicity of the hybrid membranes increased when APTEOS content was less than 5 wt%. The swelling degree of the hybrid membranes has been restrained in an aqueous solution owing to the formation of hydrogen and covalent bonds in the membrane matrix. Permeation flux increased remarkably with APTEOS content increasing, and water permselectivity increased at the same time, the trade-off between the permeation flux and water permselectivity of the hybrid membranes was broken. The sorption selectivity increased with increasing temperature, and decreased with increasing water content. In addition, the diffusion selectivity and diffusion coefficient of the permeants through the hybrid membranes were investigated. The hybrid membrane containing 5 wt% APTEOS has highest separation factor of 536.7 at 50 degrees C and permeation flux of 0.0355 kg m(-2) h(-1) in PV separation of 5 wt% water in the feed. (c) 2006 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE BV
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1016/j.memsci.2006.10.041]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Zhang, Qiu Gen,Liu, Qing Lin,Liu QL,et al. Anti-trade-off in dehydration of ethanol by novel PVA/APTEOS hybrid membranes[J],2006.
APA	Zhang, Qiu Gen,Liu, Qing Lin,刘庆林,Jiang, Zhong Ying,&Chen, Yu.(2006).Anti-trade-off in dehydration of ethanol by novel PVA/APTEOS hybrid membranes..
MLA	Zhang, Qiu Gen,et al."Anti-trade-off in dehydration of ethanol by novel PVA/APTEOS hybrid membranes".(2006).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。