The Jäntti Approach to Adsorption with Increasing Gas Pressure

Jäntti introduced a method of calculating equilibrium adsorption from measurements where the pressure of the gas was varied in a stepwise manner. His aim was to shorten the time necessary for a given measurement. The method was applied to gas/solid systems in which simple adsorption processes occurr...

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Main Authors: Johannes A. Poulis, Carel H. Massen, Erich Robens
Format: Article
Language:English
Published: SAGE Publishing 2002-12-01
Series:Adsorption Science & Technology
Online Access:https://doi.org/10.1260/026361702321705230
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author Johannes A. Poulis
Carel H. Massen
Erich Robens
author_facet Johannes A. Poulis
Carel H. Massen
Erich Robens
author_sort Johannes A. Poulis
collection DOAJ
description Jäntti introduced a method of calculating equilibrium adsorption from measurements where the pressure of the gas was varied in a stepwise manner. His aim was to shorten the time necessary for a given measurement. The method was applied to gas/solid systems in which simple adsorption processes occurred and where the number of adsorption sites was infinite. The present paper discusses the case where no adsorption is possible on an already occupied site (Langmuir isotherm) while the number of positions available for adsorption is considered limited. The advantages of using a gas pressure that increases linearly with time are evident for studies with this limitation. It is shown that such measurements can also be speeded up using Jäntti's method.
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spelling doaj-art-30d117390d7b499e82db472e5deb08782025-01-02T23:11:46ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382002-12-012010.1260/026361702321705230The Jäntti Approach to Adsorption with Increasing Gas PressureJohannes A. Poulis0Carel H. Massen1Erich Robens2 Faculty of Technical Physics, Technical University Eindhoven, Postbus 513, NL-5600 MB Eindhoven, The Netherlands Faculty of Technical Physics, Technical University Eindhoven, Postbus 513, NL-5600 MB Eindhoven, The Netherlands Institut für Anorganische Chemie der Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55099 Mainz, GermanyJäntti introduced a method of calculating equilibrium adsorption from measurements where the pressure of the gas was varied in a stepwise manner. His aim was to shorten the time necessary for a given measurement. The method was applied to gas/solid systems in which simple adsorption processes occurred and where the number of adsorption sites was infinite. The present paper discusses the case where no adsorption is possible on an already occupied site (Langmuir isotherm) while the number of positions available for adsorption is considered limited. The advantages of using a gas pressure that increases linearly with time are evident for studies with this limitation. It is shown that such measurements can also be speeded up using Jäntti's method.https://doi.org/10.1260/026361702321705230
spellingShingle Johannes A. Poulis
Carel H. Massen
Erich Robens
The Jäntti Approach to Adsorption with Increasing Gas Pressure
Adsorption Science & Technology
title The Jäntti Approach to Adsorption with Increasing Gas Pressure
title_full The Jäntti Approach to Adsorption with Increasing Gas Pressure
title_fullStr The Jäntti Approach to Adsorption with Increasing Gas Pressure
title_full_unstemmed The Jäntti Approach to Adsorption with Increasing Gas Pressure
title_short The Jäntti Approach to Adsorption with Increasing Gas Pressure
title_sort jantti approach to adsorption with increasing gas pressure
url https://doi.org/10.1260/026361702321705230
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