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Adsorption studies with gmelinite zeolites containing mono-, di- and tri-valent cations

Chiyoda, Osamu and Davis, Mark E. (2000) Adsorption studies with gmelinite zeolites containing mono-, di- and tri-valent cations. Microporous and Mesoporous Materials, 38 (2-3). pp. 143-149. ISSN 1387-1811. doi:10.1016/S1387-1811(99)00287-5.

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Synthetic gmelinite zeolites are prepared via (i) hydrothermal conversion of strontium-containing zeolite Y and (ii) the use of a DABCO (1,4-diazabicyclo [2,2,2] octane) polymer structure-directing agent. The synthetic materials are compared to a sample of natural gmelinite. The adsorption capacities of the three gmelinites after ion exchange with Na^+, Sr^(2+) and La^(3+) for adsorbates such as water, methanol, ethanol, propanol, nitrogen, n-hexane and cyclohexane are presented. It is shown on each type of gmelinite and independent of the degree of faulting, the adsorption capacities of nitrogen, propanol, n-hexane and cyclohexane increase when monovalent cations are replaced by multivalent cations. However, adsorbates such as water, methanol and ethanol do not show significant variations in adsorption capacity with exchangeable ion valency.

Item Type:Article
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Davis, Mark E.0000-0001-8294-1477
Additional Information:© 2000 Elsevier Science B.V. Received 22 October 1999, Accepted 24 November 1999, Available online 28 June 2000. O.C. thanks Japan Cooperation Center for Petroleum Industry Development (JCCP) and Cosmo Oil CO. Ltd. for leave of absence to study at Caltech and for financial support to do so. Partial support of this work was provided by Chevron. We thank Carol Garland at Caltech for collecting the electron diffraction patterns.
Funding AgencyGrant Number
Japan Cooperation Center for Petroleum Industry DevelopmentUNSPECIFIED
Chevron CorporationUNSPECIFIED
Subject Keywords:Gmelinite; Ion exchange; Physical adsorption
Issue or Number:2-3
Record Number:CaltechAUTHORS:20170408-133955288
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75876
Deposited By: 1Science Import
Deposited On:13 Apr 2017 20:34
Last Modified:15 Nov 2021 16:55

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