Physisorption Hysteresis Loops and the Characterization of Nanoporous Materials
The classification of adsorption hysteresis loops recommended by the IUPAC in 1984 was based on experimental observations and the application of classical principles of pore filling (notably the use of the Kelvin equation for mesopore analysis). Recent molecular simulation and density functional (DF...
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2004-12-01
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Online Access: | https://doi.org/10.1260/0263617053499032 |
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doaj-86126140590a40d094b081a654251cd22021-04-02T17:51:53ZengHindawi - SAGE PublishingAdsorption Science & Technology0263-61742048-40382004-12-012210.1260/0263617053499032Physisorption Hysteresis Loops and the Characterization of Nanoporous MaterialsKenneth S.W. Sing0Ruth T. Williams1 School of Chemistry, University of Exeter, Stocker Road, Exeter EX4 4QD, UK Chemistry Department, The Open University, Walton Hall, Milton Keynes MK7 6AA, UKThe classification of adsorption hysteresis loops recommended by the IUPAC in 1984 was based on experimental observations and the application of classical principles of pore filling (notably the use of the Kelvin equation for mesopore analysis). Recent molecular simulation and density functional (DFT) studies of the physisorption of gases by model pore structures have greatly improved our understanding of the mechanisms of hysteresis and it is therefore timely to revisit the IUPAC recommendations. In this review, we conclude that there is no immediate need to change the IUPAC classification of physisorption isotherms and hysteresis loops. However, in the light of recent advances, we are able to offer a revised checklist for the analysis of nitrogen isotherms on nanoporous solids: this includes a carefully regulated application of DFT in place of a classical procedure such as the well-known Barrett-Joyner-Halenda (BJH) method.https://doi.org/10.1260/0263617053499032 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kenneth S.W. Sing Ruth T. Williams |
spellingShingle |
Kenneth S.W. Sing Ruth T. Williams Physisorption Hysteresis Loops and the Characterization of Nanoporous Materials Adsorption Science & Technology |
author_facet |
Kenneth S.W. Sing Ruth T. Williams |
author_sort |
Kenneth S.W. Sing |
title |
Physisorption Hysteresis Loops and the Characterization of Nanoporous Materials |
title_short |
Physisorption Hysteresis Loops and the Characterization of Nanoporous Materials |
title_full |
Physisorption Hysteresis Loops and the Characterization of Nanoporous Materials |
title_fullStr |
Physisorption Hysteresis Loops and the Characterization of Nanoporous Materials |
title_full_unstemmed |
Physisorption Hysteresis Loops and the Characterization of Nanoporous Materials |
title_sort |
physisorption hysteresis loops and the characterization of nanoporous materials |
publisher |
Hindawi - SAGE Publishing |
series |
Adsorption Science & Technology |
issn |
0263-6174 2048-4038 |
publishDate |
2004-12-01 |
description |
The classification of adsorption hysteresis loops recommended by the IUPAC in 1984 was based on experimental observations and the application of classical principles of pore filling (notably the use of the Kelvin equation for mesopore analysis). Recent molecular simulation and density functional (DFT) studies of the physisorption of gases by model pore structures have greatly improved our understanding of the mechanisms of hysteresis and it is therefore timely to revisit the IUPAC recommendations. In this review, we conclude that there is no immediate need to change the IUPAC classification of physisorption isotherms and hysteresis loops. However, in the light of recent advances, we are able to offer a revised checklist for the analysis of nitrogen isotherms on nanoporous solids: this includes a carefully regulated application of DFT in place of a classical procedure such as the well-known Barrett-Joyner-Halenda (BJH) method. |
url |
https://doi.org/10.1260/0263617053499032 |
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