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Synthesis and pervaporation properties of NaA zeolite membranes prepared with vacuum-assisted method
Huang, Aisheng; Yang, Weishen; Liu, Jie; Yang WS(杨维慎); Yang WS(杨维慎)
关键词Naa Zeolite Membrane In Situ Hydrothermal Synthesis Vacuum-assisted Pervaporation Formation Mechanism
刊名SEPARATION AND PURIFICATION TECHNOLOGY
2007-08-15
DOI10.1016/j.seppur.2007.01.020
56期:2页:158-167
收录类别SCI
文章类型Article
部门归属5
项目归属504
产权排名2;1
WOS标题词Science & Technology ; Technology
类目[WOS]Engineering, Chemical
研究领域[WOS]Engineering
关键词[WOS]TUBULAR SUPPORTS ; SECONDARY GROWTH ; A MEMBRANES ; MIXTURES ; FILMS ; SEPARATION ; ALUMINA ; SURFACE ; ZSM-5 ; WATER
英文摘要Uniform and dense NaA zeolite membranes were synthesized on the tubular alpha-Al2O3 support with a vacuum-assisted method by using low vacuum. The effect of vacuum degree on the formation of the NaA zeolite membrane was investigated. With the assistance of the vacuum, the negative influence of the gravitation force could be effectively reduced. Therefore, the zeolite particles could transport to cover the entire area of the support surface homogeneously, which facilitated formation of uniform and dense zeolite membranes. With the assistance of the vacuum, most zeolite particles migrated to the support surface for membrane formation, and the amount of crystals forming in the liquid phase could be greatly reduced. In addition, zeolite particles could be transported to the support surface rapidly, increasing the rate of dense membrane formation. The pervaporation properties of the as-synthesized zeolite membranes were evaluated by dehydration of 95 wt.% isopropanol/water mixtures at 343 K. The as-synthesized NaA zeolite membrane prepared with the vacuum-assisted method (i.e., with the assistance of 10 mmHg vacuum degrees), showed good pervaporation properties. The separation factor (water/isopropanol) was 3781 and the flux was 1.49 kg/m(2)h, respectively. Based on the observed results, the formation mechanism of zeolite membrane with vacuum-assisted method was discussed. (c) 2007 Elsevier B.V. All rights reserved.
语种英语
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WOS记录号WOS:000248029100005
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被引频次:42[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/99417
专题中国科学院大连化学物理研究所
通讯作者Yang WS(杨维慎); Yang WS(杨维慎)
作者单位1.Tongji Univ, Dept Chem, Shanghai 200092, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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GB/T 7714
Huang, Aisheng,Yang, Weishen,Liu, Jie,et al. Synthesis and pervaporation properties of NaA zeolite membranes prepared with vacuum-assisted method[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2007,56(2):158-167.
APA Huang, Aisheng,Yang, Weishen,Liu, Jie,杨维慎,&杨维慎.(2007).Synthesis and pervaporation properties of NaA zeolite membranes prepared with vacuum-assisted method.SEPARATION AND PURIFICATION TECHNOLOGY,56(2),158-167.
MLA Huang, Aisheng,et al."Synthesis and pervaporation properties of NaA zeolite membranes prepared with vacuum-assisted method".SEPARATION AND PURIFICATION TECHNOLOGY 56.2(2007):158-167.
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