DICP OpenIR
Synthesis and gas permeation properties of silicalite-1 zeolite membrane
Xu, XC; Cheng, MJ; Yang, WS; Lin, LW
KeywordZeolite Membrane Silicalite-1 Hydrothermal Synthesis Gas Separation
Source PublicationSCIENCE IN CHINA SERIES B-CHEMISTRY
1998-06-01
Volume41Issue:3Pages:325-330
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordCRYSTALLIZATION ; ZSM-5 ; FILM
AbstractSilicalite-1/ceramic composite membrane was prepared on the outer surface of the alpha-Al2O3 tubular support by in-situ hydrothermal synthesis. The membrane was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The pure gas permeances of H-2, N-2, Ar, CH4, C2H4, C2H6, C3H8, n-C4H10 and i-C4H10 were measured as a function of the pressure difference at 298 and 473 K. The permeances of H-2, N-2 and Ar showed little dependence on the pressure differences; the permselectivities of H-2/i-C4H10 were 249 and 36.2 at 298 and 473 K respectively, which is a characteristic of molecular transport in silicalite-l channels. The permeances of light alkanes decreased in the following order: CH4 > C2H6 > C3H8 > n-C4H10 > i-C4H10. The permselectivity of n-C4H10/i-C4H10 was above 15 at 298 K. As the temperature increased, the permeances of all gases increased except those of N-2 and Ar, and a significant increment was found for alkanes. The permselectivity of n-C4H10/i-C4H10 decreased to about 9 at 473 K. The gas permeation results showed that the silicalite-1/ceramic composite membrane was defect-free.
Language英语
WOS IDWOS:000074448300015
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/138190
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,Cheng, MJ,Yang, WS,et al. Synthesis and gas permeation properties of silicalite-1 zeolite membrane[J]. SCIENCE IN CHINA SERIES B-CHEMISTRY,1998,41(3):325-330.
APA Xu, XC,Cheng, MJ,Yang, WS,&Lin, LW.(1998).Synthesis and gas permeation properties of silicalite-1 zeolite membrane.SCIENCE IN CHINA SERIES B-CHEMISTRY,41(3),325-330.
MLA Xu, XC,et al."Synthesis and gas permeation properties of silicalite-1 zeolite membrane".SCIENCE IN CHINA SERIES B-CHEMISTRY 41.3(1998):325-330.
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