%0 Journal Article
%T Permeation Property of Trace Water in the Chloromethanes through NaA Zeolite Membrane Simulated by Maxwell-Stefan Theory<br>Maxwell-Stefan理论模拟NaA沸石膜分离一氯甲烷中微量水的渗透特性
%A YAN Shi-wei
%A WANG Jin-qu
%A ZHOU Zhi-hui
%A YANG Jian-hua
%A CHANG Li-feng
%A MIAO Qian
%A <br>闫世伟
%A 王金渠
%A 周志辉
%A 杨建华
%A 常立峰
%A 苗倩
%J 过程工程学报
%D 2009
%I 
%X High quality NaA zeolite membrane was prepared secondary hydrothermal synthesis using hot dip-coating seeding and studied for the removal of trace water from chloromethanes by vapor permeation. The NaA zeolite membrane showed an excellent separation selectivity of water over chloromethanes as high as 74831, the water content of product decreased from 0.2582%(ω) to 0.005%(ω). The observed water permeation dependencies of pressure and temperature were simulated by Maxwell-Stefan approach. There was good agreement between the simulated and observed results. It reveals that water vapor permeation is governed by surface diffusion, and the adsorption isotherm of water is Langmuir type, the adsorption water plays an important role in the water permeation flux. Furthermore the calculated adsorption enthalpy of water was -34.15 kJ/mol.
%K NaA zeolite membrane
%K Maxwell-Stefan theory
%K vapor permeation
%K water permeation property
%K water-chloromethane mixture<br>NaA沸石膜
%K Maxwell-Stefan理论
%K 蒸汽渗透
%K 水的渗透性能
%K 一氯甲烷
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=3FCF8B1A330466D5&jid=B9EE12934D19905403D996AE65CEEEED&aid=5704863491EB3ED21D1DB1199DE141C5&yid=DE12191FBD62783C&vid=9CF7A0430CBB2DFD&iid=B31275AF3241DB2D&sid=305A58D956DD6BAF&eid=F79A45851FD04E0C&journal_id=1009-606X&journal_name=过程工程学报&referenced_num=0&reference_num=22