乙二醇/水在NaA分子筛中吸附扩散行为的模拟

被引:7
作者
杨龙
刘艳梅
张玉亭
顾学红
机构
[1] 南京工业大学化学化工学院材料化学工程国家重点实验室
关键词
NaA分子筛; 乙二醇; 脱水; 吸附; 扩散;
D O I
暂无
中图分类号
TQ424.25 [用作吸附剂的人造硅酸盐];
学科分类号
090105 [作物生产系统与生态工程];
摘要
采用巨正则蒙特卡罗(GCMC)和平衡分子动力学(EMD)方法,模拟乙二醇(EG)/水在NaA分子筛孔道中的吸附与扩散行为。结果表明:混合组分间存在着显著的竞争吸附行为,水的吸附量随水质量分数的升高呈增大趋势,与实验中渗透通量的变化趋势相吻合;纯水的扩散速率明显高于乙二醇的扩散速率,混合组分的扩散行为受分子间互相作用影响显著,乙二醇分子对水分子的扩散产生显著的阻滞作用,从而影响了NaA分子筛膜的渗透通量。
引用
收藏
页码:62 / 66
页数:5
相关论文
共 10 条
[1]
水在ZSM-5型分子筛中吸附的Monte Carlo模拟 [J].
丁静 ;
胡玉坤 ;
杨晓西 ;
杨建平 .
化工学报, 2008, (09) :2276-2282
[2]
国内外乙二醇现状及发展前景 [J].
崔小明 .
化学工业, 2007, (04) :15-21
[3]
Pervaporation dehydration of ethylene glycol by NaA zeolite membranes[J] Congli Yu;Chao Zhong;Yanmei Liu;Xuehong Gu;Gang Yang;Weihong Xing;Nanping Xu Chemical Engineering Research and Design 2011,
[4]
Effect of seeding methods on growth of NaA zeolite membranes[J] Yanmei Liu;Zhanzhao Yang;Congli Yu;Xuehong Gu;Nanping Xu Microporous and Mesoporous Materials 2011,
[5]
Simulation of adsorption; diffusion; and permeability of water and ethanol in NaA zeolite membranes[J] Shenyu Guo;Congli Yu;Xuehong Gu;Wanqin Jin;Jing Zhong;Cheng-lung Chen Journal of Membrane Science 2011,
[6]
Prediction of adsorption and separation of water–alcohol mixtures with zeolite NaA[J] Gábor Rutkai;éva Csányi;Tamás Kristóf Microporous and Mesoporous Materials 2008,
[7]
Analyzing diffusion behaviors of methanol/water through MFI membranes by molecular simulation[J] Jin Zhi Yang;Yu Chen;Ai Mei Zhu;Qing Lin Liu;Jian Yang Wu Journal of Membrane Science 2008,
[8]
Separation of Ethylene Glycol/Water Mixtures using NaA Zeolite Membranes[J] O. G. Nik;A. Moheb;T. Mohammadi Chemical Engineering & Technology 2006,
[9]
Driving force for pervaporation through zeolite membranes[J] Travis C Bowen;Shiguang Li;Richard D Noble;John L Falconer Journal of Membrane Science 2003,
[10]
The first large-scale pervaporation plant using tubular-type module with zeolite NaA membrane[J] Yoshio Morigami;Masakazu Kondo;Jun Abe;Hidetoshi Kita;Kenichi Okamoto Separation and Purification Technology 2001,