A computer simulation and experimental study of the difference between krypton adsorption on a graphite surface and in a graphitic hexagonal pore

Wang, Yao, Razak, Musab Abdul, Do, D.D., Horikawa, Toshihide, Morishige, Kunimitsu and Nicholson, D. (2012) A computer simulation and experimental study of the difference between krypton adsorption on a graphite surface and in a graphitic hexagonal pore. Carbon, 50 8: 2908-2917. doi:10.1016/j.carbon.2012.02.060


Author Wang, Yao
Razak, Musab Abdul
Do, D.D.
Horikawa, Toshihide
Morishige, Kunimitsu
Nicholson, D.
Title A computer simulation and experimental study of the difference between krypton adsorption on a graphite surface and in a graphitic hexagonal pore
Journal name Carbon   Check publisher's open access policy
ISSN 0008-6223
1873-3891
Publication date 2012-07
Sub-type Article (original research)
DOI 10.1016/j.carbon.2012.02.060
Volume 50
Issue 8
Start page 2908
End page 2917
Total pages 10
Place of publication Oxford, United Kingdom
Publisher Pergamon
Collection year 2013
Language eng
Abstract Adsorption isotherms and isosteric heats have been studied experimentally and by computer simulation for the krypton-graphitic hexagonal pore and krypton-graphite planar surface systems in the 60-109 K temperature range. The existence of a 2D transition in the sub-monolayer film on the basal plane of graphite that is observed experimentally is confirmed by the computer simulation results, but this transition is not observed in graphitic hexagonal pores because the onset of adsorption occurs at the junctions of adjacent pore walls, and the mechanism of surface adsorption is the spreading of adsorbate from the junction towards the basal planes until the first layer is completed. This is followed by molecular layering of higher layers, and then by capillary condensation when the empty core is small enough.
Keyword Gas-Phase Adsorption
Triple Point
Layering Transitions
Cylindrical Pores
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 28 February 2012.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2013 Collection
 
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