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Characterizations of activated carbon-methanol adsorption pair including the heat of adsorptions

journal contribution
posted on 14.01.2016, 13:40 by Jun W. Wu, S. Hadi Madani, Mark Biggs, Phillip Pendleton, Chen Lei, Eric J. Hu
This paper presents adsorption isotherms and isosteric heats of adsorption for methanol vapor adsorption for two commercially available activated carbon samples - 207EA granules and WS-480 pellets (Calgon Carbon, U.S.A.) - which were also fully characterized using nitrogen sorption at 77 K. The heat of adsorption of methanol as a function of loading was determined using the Clausius-Clapeyron approach with isotherms obtained at 5 °C, 15 °C, and 25 °C. The isosteric heats of adsorption increased sharply at the small coverage due to increasing effect of condensation heat with coverage. The heat reached a maximum and then varies little with loading, with the average values at around 46.6 kJ/mol for 207EA and 45.1 kJ/mol for WS-480. The higher heats of adsorption for the former activated carbon reflect its more microporous nature (around 78 % compare to 62 % for WS-480 activated carbon). The heat of adsorption data is also comparable to that obtained elsewhere for other activated carbons.

Funding

This work was supported by an Australian Research Council (ARC) and Orlando Wines Pty Ltd., Linkage Grant under the project no. LP12020035

History

School

  • Science

Department

  • Chemistry

Published in

Journal of Chemical and Engineering Data

Volume

60

Issue

6

Pages

1727 - 1731

Citation

WU, J.W. ...et al., 2015. Characterizations of Activated Carbon-Methanol Adsorption Pair Including the Heat of Adsorptions. Journal of Chemical and Engineering Data, 60(6), pp. 1727-1731.

Publisher

© American Chemical Society

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015

Notes

This paper is in closed access.

ISSN

0021-9568

eISSN

1520-5134

Language

en

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Keywords

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