A New Adsorption Isotherm for Heterogeneous Sorbents

An adsorption isotherm has been suggested for the intended description of the experimental isotherms for the adsorption of gases and vapours on heterogeneous surfaces. Two parameters of the suggested equation, which characterize the heterogeneity of a sorbent, were expressed in the form of explicit...

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Main Authors: V.P. Shkilev, V.V. Brei
Format: Article
Language:English
Published: SAGE Publishing 2001-07-01
Series:Adsorption Science & Technology
Online Access:https://doi.org/10.1260/0263617011494330
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author V.P. Shkilev
V.V. Brei
author_facet V.P. Shkilev
V.V. Brei
author_sort V.P. Shkilev
collection DOAJ
description An adsorption isotherm has been suggested for the intended description of the experimental isotherms for the adsorption of gases and vapours on heterogeneous surfaces. Two parameters of the suggested equation, which characterize the heterogeneity of a sorbent, were expressed in the form of explicit functions of temperature as well as of variance and the excess coefficient for the corresponding energy distribution of adsorption sites. The presence of such explicit expressions allowed the application of the suggested equation for the description of the dependence of the adsorption not only on pressure but also on temperature. The adsorption of N 2 on TiO 2 was considered as an example. It was shown that the suggested equation could be used as the thermal equation of state for a real adsorption system over quite wide ranges of temperature and pressure.
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publisher SAGE Publishing
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series Adsorption Science & Technology
spelling doaj-art-d683f79d03ca41458714d2126cfdc52d2025-08-20T02:44:46ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382001-07-011910.1260/0263617011494330A New Adsorption Isotherm for Heterogeneous SorbentsV.P. ShkilevV.V. BreiAn adsorption isotherm has been suggested for the intended description of the experimental isotherms for the adsorption of gases and vapours on heterogeneous surfaces. Two parameters of the suggested equation, which characterize the heterogeneity of a sorbent, were expressed in the form of explicit functions of temperature as well as of variance and the excess coefficient for the corresponding energy distribution of adsorption sites. The presence of such explicit expressions allowed the application of the suggested equation for the description of the dependence of the adsorption not only on pressure but also on temperature. The adsorption of N 2 on TiO 2 was considered as an example. It was shown that the suggested equation could be used as the thermal equation of state for a real adsorption system over quite wide ranges of temperature and pressure.https://doi.org/10.1260/0263617011494330
spellingShingle V.P. Shkilev
V.V. Brei
A New Adsorption Isotherm for Heterogeneous Sorbents
Adsorption Science & Technology
title A New Adsorption Isotherm for Heterogeneous Sorbents
title_full A New Adsorption Isotherm for Heterogeneous Sorbents
title_fullStr A New Adsorption Isotherm for Heterogeneous Sorbents
title_full_unstemmed A New Adsorption Isotherm for Heterogeneous Sorbents
title_short A New Adsorption Isotherm for Heterogeneous Sorbents
title_sort new adsorption isotherm for heterogeneous sorbents
url https://doi.org/10.1260/0263617011494330
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