Adsorption hysteresis and criticality in regular mesoporous materials

Bhatia, S.K. and Sonwane, C.G. (2000). Adsorption hysteresis and criticality in regular mesoporous materials. In: K.K. Unger, G. Kreysa and J. P. Baselt, Characterization of Porous Solids V : Proceedings of the Fifth IUPAC Symposium on Characterisation of Porous Solids. Fifth IUPAC Symposium, Heidelberg, Germany, (187-196). 30 May-2 June, 1999.

Author Bhatia, S.K.
Sonwane, C.G.
Title of paper Adsorption hysteresis and criticality in regular mesoporous materials
Conference name Fifth IUPAC Symposium
Conference location Heidelberg, Germany
Conference dates 30 May-2 June, 1999
Proceedings title Characterization of Porous Solids V : Proceedings of the Fifth IUPAC Symposium on Characterisation of Porous Solids   Check publisher's open access policy
Journal name Characterization of Porous Solids V   Check publisher's open access policy
Place of Publication New York
Publisher Elsevier
Publication Year 2000
Sub-type Fully published paper
ISBN 10: 0-444-50259-9
ISSN 0167-2991
Editor K.K. Unger
G. Kreysa
J. P. Baselt
Volume 128
Start page 187
End page 196
Total pages 10
Language eng
Abstract/Summary In the present work, various theories predicting the critical diameter for the absence of capillary condensation and hysteresis are applied to experimental adsorption isotherms of vapors on regular mesoporous materials. Among the various theories studied, the tensile strength approximation proposed by the authors was found to be the most successful. Reversibility of nitrogen adsorption at 77.4 K was studied on pure MCM-41 of various pore sizes, as well as mixtures of pure MCM-41 samples in a 1:1 ratio. The results of PSD and hysteresis on MCM-41 mixtures are close to that expected from studies of the pure materials. The estimates of hysteresis critical temperature and diameter of MCM-41, HMS, FSM and KIT materials are also provided.
Subjects 0912 Materials Engineering
0904 Chemical Engineering
Keyword Chemistry, Physical
Mcm-41
Pores
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Conference Paper
Collection: School of Chemical Engineering Publications
 
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Created: Mon, 13 Aug 2007, 12:11:27 EST