English  |  正體中文  |  简体中文  |  Items with full text/Total items : 49189/83570 (59%)
Visitors : 7090069      Online Users : 58
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/24944


    Title: Effect of Cation Substitution on the Adsorption of Xenon on Zeolite NaY and on the Xenon-129 Chemical Shifts
    Other Titles: 核磁共振法而氦與氦-129在NaY-型沸石之化學位移
    Authors: Liu, Shang-bin;Fung, B. M.;Yang, Tran-chin;Hong, Eng-chin;Chang, Chau-ting;Shih, Pei-chin;Tong, Fu-hsing;陳敦禮;Chen, Tun-li
    Contributors: 淡江大學化學學系
    Date: 1994-04-21
    Issue Date: 2009-12-01
    Publisher: American Chemical Society (ACS)
    Abstract: A comprehensive study of the effect of cation sub3titution on the adsorption of xenon on NaY zeolites and on 129Xec hemical shifts has been made. The cations studied include H+, alkali (Li+, K+, Rb+, Cs+), alkaline earth(Mg2+, Ca2+, Sr2+, Ba2+), and transition metal (Co2+, Ni2+, Cu2+, Zn2+), each with varied degree of exchange with Na+. The results of the adsorption isotherms were analyzed by the use of a Langmuir-type equation. It was found that the adsorption strength for the Y-zeolites follows the trend Ba > Cs 1 Rb > K 1 Sr > Ca > Na 1 Co 1 Ni 1 Li 5 Zn > Cu N H > Mg. The observed 129Xe chemical shifts of the adsorbed xenon were interpreted by a newly developed virial expansion model; an equation relating the 129Xe chemical shift and the amount of xenon atoms adsorbed per cage has been derived and used to fit the experimental data of all the
    systems studied, and the results are quite satisfactory. It is suggested that the adsorption strength and the 129Xe chemical shift are dependent on the location of the cation in the supercage as well as on various interactions of the xenon atoms with each other and with the zeolite walls. The van der Waals interaction, which is determined by the polarizability of the interacting species, is the major interaction. The Coulombic interaction of the
    cations plays a secondary role.
    Relation: Journal of physical chemistry 98(16), pp.4393-4401
    DOI: 10.1021/j100067a030
    Appears in Collections:[化學學系暨研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat
    0KbUnknown213View/Open
    index.html0KbHTML37View/Open

    All items in 機構典藏 are protected by copyright, with all rights reserved.


    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback