DICP OpenIR
Synthesis and perfection evaluation of NaA zeolite membrane
Xu, XC; Yang, WS; Liu, J; Lin, LW
KeywordClear Solution Gas Permeation Hydrothermal Synthesis Naa Zeolite Membrane Perfection Evaluation
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
2001-10-01
Volume25Issue:1-3Pages:475-485
Indexed ByISTP ; SCI
SubtypeArticle
Department5107
Funding Project504
WOS HeadingsScience & Technology ; Technology
WOS SubjectEngineering, Chemical
WOS Research AreaEngineering
WOS KeywordGAS PERMEATION PROPERTIES ; COMPOSITE MEMBRANES ; MFI MEMBRANES ; SEPARATION ; MIXTURES ; PERVAPORATION
AbstractThe synthesis of NaA zeolite membrane on a porous alpha -Al2O3 support from clear solution and the evaluation of the perfection of the as-synthesized membrane by gas permeation were investigated. When an unseeded support was used, the NaA zeolite began to transform into other types of zeolites before a continuous NaA zeolite membrane formed. When the support was coated with nucleation seeds, not only the formation of NaA zeolite on the support surface was accelerated, but also the transformation of NaA zeolite into other types of zeolites was inhibited. A continuous NaA zeolite membrane can be formed. Perfection evaluation indicated that the NaA zeolite membrane with the synthesis time of 3 h showed the best perfection after a one-stage synthesis. The perfection of NaA zeolite membrane can be improved by employing the multi-stage synthesis method. The NaA zeolite membrane with a synthesis time of 2 h after a two-stage synthesis showed the best gas permeation performance, The permselectivity of H-2/n-C4H10 and O-2/N-2 were 19.1 and 1.8, respectively, higher than those of the corresponding Knudsen diffusion selectivity of 5.39 and 0.94, which showed the molecular sieving effect of NaA zeolite. However, the permeation of n-C4H10 also indicated that the NaA zeolite membrane had certain defects, the diameter of which were larger than the NaA zeolite channels. (C) 2001 Elsevier Science B.V. All rights reserved.
Language英语
URL查看原文
WOS IDWOS:000171837900052
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/85859
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Xu, XC,Yang, WS,Liu, J,et al. Synthesis and perfection evaluation of NaA zeolite membrane[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2001,25(1-3):475-485.
APA Xu, XC,Yang, WS,Liu, J,&Lin, LW.(2001).Synthesis and perfection evaluation of NaA zeolite membrane.SEPARATION AND PURIFICATION TECHNOLOGY,25(1-3),475-485.
MLA Xu, XC,et al."Synthesis and perfection evaluation of NaA zeolite membrane".SEPARATION AND PURIFICATION TECHNOLOGY 25.1-3(2001):475-485.
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