Temperature Dependence of the Isosteric Heat of Adsorption

Direct calorimetric measurements of the isosteric heats of adsorption of (a) pure CO 2 on a strongly heterogeneous adsorbent (silicalite with an alumina binder) and (b) pure N 2 on a mildly heterogeneous adsorbent (5A zeolite) at different temperatures and adsorbate loadings demonstrated the validit...

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Main Authors: D.V. Cao, S. Sircar
Format: Article
Language:English
Published: SAGE Publishing 2001-12-01
Series:Adsorption Science & Technology
Online Access:https://doi.org/10.1260/0263617011494646
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author D.V. Cao
S. Sircar
author_facet D.V. Cao
S. Sircar
author_sort D.V. Cao
collection DOAJ
description Direct calorimetric measurements of the isosteric heats of adsorption of (a) pure CO 2 on a strongly heterogeneous adsorbent (silicalite with an alumina binder) and (b) pure N 2 on a mildly heterogeneous adsorbent (5A zeolite) at different temperatures and adsorbate loadings demonstrated the validity of the conventional assumption that isosteric heats are very weak functions of temperature. A simple thermodynamic model for the adsorption of a pure gas on an adsorbent containing two different energetic sites also validated the same assumption in the Henry's law region.
format Article
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institution Kabale University
issn 0263-6174
2048-4038
language English
publishDate 2001-12-01
publisher SAGE Publishing
record_format Article
series Adsorption Science & Technology
spelling doaj-art-1899d4453f1a47e6a001b6a90e74104b2025-01-03T00:11:13ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382001-12-011910.1260/0263617011494646Temperature Dependence of the Isosteric Heat of AdsorptionD.V. CaoS. SircarDirect calorimetric measurements of the isosteric heats of adsorption of (a) pure CO 2 on a strongly heterogeneous adsorbent (silicalite with an alumina binder) and (b) pure N 2 on a mildly heterogeneous adsorbent (5A zeolite) at different temperatures and adsorbate loadings demonstrated the validity of the conventional assumption that isosteric heats are very weak functions of temperature. A simple thermodynamic model for the adsorption of a pure gas on an adsorbent containing two different energetic sites also validated the same assumption in the Henry's law region.https://doi.org/10.1260/0263617011494646
spellingShingle D.V. Cao
S. Sircar
Temperature Dependence of the Isosteric Heat of Adsorption
Adsorption Science & Technology
title Temperature Dependence of the Isosteric Heat of Adsorption
title_full Temperature Dependence of the Isosteric Heat of Adsorption
title_fullStr Temperature Dependence of the Isosteric Heat of Adsorption
title_full_unstemmed Temperature Dependence of the Isosteric Heat of Adsorption
title_short Temperature Dependence of the Isosteric Heat of Adsorption
title_sort temperature dependence of the isosteric heat of adsorption
url https://doi.org/10.1260/0263617011494646
work_keys_str_mv AT dvcao temperaturedependenceoftheisostericheatofadsorption
AT ssircar temperaturedependenceoftheisostericheatofadsorption