On the isosteric heat of adsorption of non-polar and polar fluids on highly graphitized carbon black

Horikawa, Toshihide, Zeng, Yonghong, Do, D. D., Sotowa, Ken-Ichiro and Alcantara Avila, Jesus Rafael (2015) On the isosteric heat of adsorption of non-polar and polar fluids on highly graphitized carbon black. Journal of Colloid and Interface Science, 439 1-6. doi:10.1016/j.jcis.2014.10.024


Author Horikawa, Toshihide
Zeng, Yonghong
Do, D. D.
Sotowa, Ken-Ichiro
Alcantara Avila, Jesus Rafael
Title On the isosteric heat of adsorption of non-polar and polar fluids on highly graphitized carbon black
Journal name Journal of Colloid and Interface Science   Check publisher's open access policy
ISSN 1095-7103
0021-9797
Publication date 2015-02-01
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.jcis.2014.10.024
Volume 439
Start page 1
End page 6
Total pages 6
Place of publication Maryland Heights MO, United States
Publisher Academic Press
Collection year 2015
Language eng
Abstract Isosteric heat of adsorption is indispensable in probing the energetic behavior of interaction between adsorbate and solid, and it can shed insight into how molecules interact with a solid by studying the dependence of isosteric heat on loading. In this study, we illustrated how this can be used to explain the difference between adsorption of non-polar (and weakly polar) fluids and strong polar fluids on a highly graphitized carbon black, Carbopack F. This carbon black has a very small quantity of functional group, and interestingly we showed that no matter how small it is the analysis of the isosteric heat versus loading can identify its presence and how it affects the way polar molecules adsorb. We used argon and nitrogen as representatives of non-polar fluid and weakly polar fluid, and methanol and water for strong polar fluid. The pattern of the isosteric heat versus loading can be regarded as a fingerprint to determine the mechanism of adsorption for strong polar fluids, which is very distinct from that for non-polar fluids. This also allows us to estimate the interplay between the various interactions: fluid–fluid, fluid-basal plane and fluid-functional group.
Keyword Isosteric heat of adsorption
Graphitized carbon black
Water adsorption
Methanol adsorption
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online ahead of print 23 Oct 2014

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2015 Collection
 
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