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Krypton Adsorption on Zeolite-Templated Carbon and Anomalous Surface Thermodynamics

Murialdo, Maxwell and Stadie, Nicholas P. and Ahn, Channing C. and Fultz, Brent (2015) Krypton Adsorption on Zeolite-Templated Carbon and Anomalous Surface Thermodynamics. Langmuir, 31 (29). pp. 7991-7998. ISSN 0743-7463.

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Krypton adsorption was measured at eight temperatures between 253 and 433 K on a zeolite-templated carbon and two commercial carbons. The data were fitted using a generalized Langmuir isotherm model and thermodynamic properties were extracted. Differing from that on commercial carbons, krypton adsorption on the zeolite-templated carbon is accompanied by an increasing isosteric enthalpy of adsorption, rising by up to 1.4 kJ mol^(–1) as a function of coverage. This increase is a result of enhanced adsorbate–adsorbate interactions promoted by the ordered, nanostructured surface of the adsorbent. An assessment of the strength and nature of these adsorbate–adsorbate interactions is made by comparing the measured isosteric enthalpies of adsorption (and other thermodynamic quantities) to fundamental metrics of intermolecular interactions of krypton and other common gases.

Item Type:Article
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Fultz, Brent0000-0002-6364-8782
Additional Information:© 2015 American Chemical Society. Received: April 23, 2015; Revised: June 16, 2015. Publication Date (Web): July 2, 2015. This work was sponsored as a part of EFree (Energy Frontier Research in Extreme Environments), an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Basic Energy Sciences under Award Number DE-SC0001057. The authors declare no competing financial interest.
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0001057
Issue or Number:29
Record Number:CaltechAUTHORS:20150720-083049878
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Official Citation:Krypton Adsorption on Zeolite-Templated Carbon and Anomalous Surface Thermodynamics Maxwell Murialdo, Nicholas P. Stadie, Channing C. Ahn, and Brent Fultz Langmuir 2015 31 (29), 7991-7998 DOI: 10.1021/acs.langmuir.5b01497
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:58933
Deposited By: Tony Diaz
Deposited On:21 Jul 2015 21:19
Last Modified:03 Oct 2019 08:41

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