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题名: Enhancement of NaA zeolite membrane properties through organic cation addition
作者: Huang, Aisheng1;  Yang, Weishen2
通讯作者: 黄爱生 ;  杨维慎
关键词: NaA zeolite membrane ;  hydrothermal synthesis ;  pervaporation ;  gas permeation ;  organic cation
刊名: SEPARATION AND PURIFICATION TECHNOLOGY
发表日期: 2008-07-01
DOI: 10.1016/j.seppur.2007.10.011
卷: 61, 期:2, 页:175-181
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;2
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: Thin NaA zeolite membranes, with uniform and small crystals, were prepared on the tubular alpha-Al2O3 support by adding a small amount of tetramethylammonium hydroxide (TMAOH) in the clear synthesis solution. The as-synthesized NaA zeolite membranes were characterized by XRD and SEM. The permeation properties of the membranes were evaluated by pervaporation and gas permeation. The effects of TMAOH amount on membrane formation and permeation properties were investigated. By addition of suitable amount of TMAOH in the clear synthesis solution, the crystals size of NaA zeolite could be remarkably reduced from about 10 mu m to 3-4 mu m, and the membrane thickness correspondingly reduced from about 16 mu m to 5 mu m. The thinner membrane prepared by adding TMAOH in the clear synthesis solution, with uniform and small crystal, displayed higher perm-selective properties than that without adding TMAOH. For the as-synthesized NaA zeolite membrane prepared with adding suitable amount of TMAOH (x= 1), the separation factor (water/isopropanol) was 4700 and the flux was 1.67 kg/( m(2) h), which were higher than that without adding TMAOH of 339 and 1.08 kg/(m(2) h), respectively. The ideal separation factor of H-2/N-2 was 6.60, higher than that without adding TMAOH of 3.41. (c) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: A MEMBRANES ;  PERVAPORATION ;  SEPARATION ;  MIXTURES ;  SURFACE ;  FILMS ;  WATER
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000256334600009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/101143
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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

Recommended Citation:
Huang, Aisheng,Yang, Weishen. Enhancement of NaA zeolite membrane properties through organic cation addition[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2008,61(2):175-181.
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