CaltechAUTHORS
  A Caltech Library Service

Observation and Investigation of Increasing Isosteric Heat of Adsorption of Ethane on Zeolite-Templated Carbon

Murialdo, Maxwell and Stadie, Nicholas P. and Ahn, Channing C. and Fultz, Brent (2015) Observation and Investigation of Increasing Isosteric Heat of Adsorption of Ethane on Zeolite-Templated Carbon. Journal of Physical Chemistry C, 119 (2). pp. 944-950. ISSN 1932-7447. https://resolver.caltech.edu/CaltechAUTHORS:20150112-100734557

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20150112-100734557

Abstract

Ethane adsorption was measured on zeolite-templated carbon (ZTC) and compared to superactivated carbon MSC-30. Isotherms measured at temperatures between 252 and 423 K were fitted using a superposition of two Langmuir isotherms, and thermodynamic properties were assessed. Unlike typical carbon adsorbents, the isosteric heat of adsorption on ZTC increases by up to 4.6 kJ/mol with surface coverage. This increase is attributed to strong adsorbate–adsorbate intermolecular interactions, a hypothesis that is shown to be consistent with fundamental estimates of intermolecular interactions. Furthermore, the molar entropy of the adsorbed phase was measured and compared to an estimate derived from statistical mechanics. While the measured and estimated entropies of the adsorbed phase of ethane on MSC-30 are in agreement, they differ significantly on ZTC at high coverage, indicative of the atypical properties of ethane adsorption on ZTC.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/jp510991yDOIArticle
http://pubs.acs.org/doi/abs/10.1021/jp510991yPublisherArticle
ORCID:
AuthorORCID
Fultz, Brent0000-0002-6364-8782
Additional Information:© 2014 American Chemical Society. Received: November 2, 2014. Revised: December 22, 2014. Publication Date (Web): December 23, 2014. This work was sponsored as a part of EFree (Energy Frontier Research in Extreme Environments), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award DE-SC0001057.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0001057
Issue or Number:2
Record Number:CaltechAUTHORS:20150112-100734557
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150112-100734557
Official Citation:Observation and Investigation of Increasing Isosteric Heat of Adsorption of Ethane on Zeolite-Templated Carbon Maxwell Murialdo, Nicholas P. Stadie, Channing C. Ahn, and Brent Fultz The Journal of Physical Chemistry C 2015 119 (2), 944-950 DOI: 10.1021/jp510991y
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53560
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:12 Jan 2015 19:07
Last Modified:03 Oct 2019 07:50

Repository Staff Only: item control page