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题名: An in situ approach to synthesize pure phase FAU-type zeolite membranes: effect of aging and formation mechanism
作者: Zhu, Guangqi1, 2;  Li, Yanshuo1;  Chen, Hongliang1;  Liu, Jie1;  Yang, Weishen1
通讯作者: 杨维慎
刊名: JOURNAL OF MATERIALS SCIENCE
发表日期: 2008-05-01
DOI: 10.1007/s10853-008-2524-2
卷: 43, 期:9, 页:3279-3288
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 504
产权排名: 1;1
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Materials Science, Multidisciplinary
研究领域[WOS]: Materials Science
英文摘要: FAU-type zeolite membranes were prepared on porous alpha-Al2O3 tubes by a two-stage in situ synthesis method. The synthesis was carried out in clear solutions without the aid of seeds or organic templates. The first stage synthesis was devoted to the in situ nucleation of FAU-type zeolite, aiming to induce an evenly covered zeolite layer on the support. In situ aging played an important role at this stage as it suppressed LTA phase and promoted the formation of a continuous zeolite layer. The second stage synthesis was performed in a dilute solution, where the pre-formed zeolite layer went on to grow and became compact. Scanning electron microscopy (SEM) observations show that the membranes were made up of well-shaped intergrown crystals, with the thickness around 7 mu m. Pervaporation (a membrane-based separation process in which the liquid components diffuse through a membrane and are subsequently vaporized due to the low-pressure exerted on the permeate side of the membrane) measurements were carried out in a water/ethanol (10/90, w/w) mixture to evaluate the membrane performance. The structural and morphological evolutions of FAU-type zeolite membranes during synthesis were tracked down by X-ray diffraction and SEM. The formation mechanism was illuminated based on the experimental results.
关键词[WOS]: PERMEATION PROPERTIES ;  FAUJASITE MEMBRANES ;  MICROWAVE SYNTHESIS ;  CLEAR SOLUTION ;  SEPARATION ;  PERFORMANCE ;  MIXTURES ;  PERVAPORATION ;  GROWTH ;  TEMPERATURE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000254458500036
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/101025
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.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Zhu, Guangqi,Li, Yanshuo,Chen, Hongliang,et al. An in situ approach to synthesize pure phase FAU-type zeolite membranes: effect of aging and formation mechanism[J]. JOURNAL OF MATERIALS SCIENCE,2008,43(9):3279-3288.
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