Capillary coexistence and criticality in mesopores: Modification of the Kelvin theory

Bhatia, SK and Sonwane, CG (1998) Capillary coexistence and criticality in mesopores: Modification of the Kelvin theory. Langmuir, 14 7: 1521-1524. doi:10.1021/la9708804


Author Bhatia, SK
Sonwane, CG
Title Capillary coexistence and criticality in mesopores: Modification of the Kelvin theory
Journal name Langmuir   Check publisher's open access policy
ISSN 0743-7463
Publication date 1998-01-01
Year available 1998
Sub-type Letter to editor, brief commentary or brief communication
DOI 10.1021/la9708804
Open Access Status Not yet assessed
Volume 14
Issue 7
Start page 1521
End page 1524
Total pages 4
Place of publication WASHINGTON
Publisher AMER CHEMICAL SOC
Language eng
Abstract The classical model of capillary equilibrium in cylindrical pores is modified here by the introduction of molecular concepts and the solid fluid interaction potential. The new approach accurately predicts capillary coexistence and criticality, with results quantitatively matching those from density functional theory for nitrogen adsorption, while also predicting condensation pressures in agreement with reported experimental findings for MCM-41. The larger critical pore size for nitrogen adsorption in these materials, however, suggests a modification of the potential function parameters, evaluated here from data for hydroxylated silica.
Keyword Chemistry, Physical
Microporous Carbons
Nitrogen Adsorption
Mcm-41
Model
Pore
Q-Index Code CX
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Letter to editor, brief commentary or brief communication
Collection: School of Chemical Engineering Publications
 
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Created: Mon, 13 Aug 2007, 20:24:03 EST