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On the application of standard isotherms to hydrogen adsorption in microporous materials
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Al-Hajjaj, A., Zamora, B., Shah, Akeel A., Reguera, E., Bavykin, Dmitry V. and Walsh, Frank (2011) On the application of standard isotherms to hydrogen adsorption in microporous materials. International Journal of Hydrogen Energy, Vol.36 (No.22). pp. 14464-14476. doi:10.1016/j.ijhydene.2011.07.110 ISSN 0360-3199.
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Official URL: http://dx.doi.org/10.1016/j.ijhydene.2011.07.110
Abstract
A mathematical framework for simulating equilibrium hydrogen adsorption isotherms in porous materials and estimating the values of key parameters associated with the adsorption process is developed. Explicit expressions for the excess, adsorbed, compressed and absolute masses, for any model isotherm, are derived. The modelling framework is used in combination with five standard equilibrium isotherm models to simulate experimental data for Prussian blue analogues, nitropussides and metal-organic frameworks via nonlinear regression. The surface areas, the affinity and heterogeneity factors, and the pressure-dependent adsorption volumes are calculated and compared to values available in the literature and the sensitivity of the results to the number of data points is quantified. The consistency of the results using different isotherm models is evaluated.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Library of Congress Subject Headings (LCSH): | Atmospheric temperature -- Mathematical models, Hydrogen -- Absorption and adsorption -- Mathematical models, Porous materials | ||||
Journal or Publication Title: | International Journal of Hydrogen Energy | ||||
Publisher: | Elsevier BV | ||||
ISSN: | 0360-3199 | ||||
Official Date: | November 2011 | ||||
Dates: |
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Volume: | Vol.36 | ||||
Number: | No.22 | ||||
Number of Pages: | 13 | ||||
Page Range: | pp. 14464-14476 | ||||
DOI: | 10.1016/j.ijhydene.2011.07.110 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | Iraq. Wizārat al-Taʻlīm al-ʻĀlī wa-al-Baḥth al-ʻIlmī [Iraq. Ministry of Higher Education and Scientific Research] (MOHESR), University of Southampton , Consejo Nacional de Ciencia y Tecnología (Mexico) [National Science and Technology Council (Mexico)] (CONACYT) | ||||
Grant number: | 206949/2009 (CONACYT), 11532/2008 (MOHESR), SEP-CONACYT-2009-129048 (CONACYT) | ||||
Version or Related Resource: | This item was also presented at the International Symposium & Exhibition on Fuel Cell Technologies (FUCETECH 2009), Mumbai, India, Nov 11 - 13, 2009. |
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