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Molecular simulation studies of hydrogen enriched methane (HEM) storage in Covalent Organic Frameworks

Liao, J; Yazaydin, AO; Yang, S; Li, F; Ding, L; (2016) Molecular simulation studies of hydrogen enriched methane (HEM) storage in Covalent Organic Frameworks. Microporous And Mesoporous Materials , 231 pp. 138-146. 10.1016/j.micromeso.2016.05.030. Green open access

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Abstract

Instead of separating hydrogen and methane mixture, such as synthetic gas, to obtain pure hydrogen and methane as clean fuel, hydrogen enriched methane (abbreviated as HEM) storage in 33 different Covalent Organic Frameworks (COFs) were studied for the first time near ambient temperatures using Grand Canonical Monte Carlo (GCMC) simulation. The use of HEM for on-board combustion engine is also known to be able to improve combustion performance as well as decrease noxious emissions. HEM adsorption performance in the COFs was mainly evaluated from three different aspects: volumetric energy density of combustion of stored HEM, gravimetric energy density of combustion of stored HEM and hydrogen selectivity. Several properties of the COFs, such as surface area, porosity, pore size were calculated for establishing the correlation with the HEM adsorption performance. The effect of temperature, initial hydrogen/methane bulk composition and hydrogen and methane/hydrogen’s heat of adsorption (HOA) in COFs on the performance of HEM adsorption were also investigated. Our work suggested there exists a complex interplay of the properties of the COFs, temperature and bulk composition which influence the energy density of the adsorbed HEM as well as methane and hydrogen ratio in the adsorbed phase.

Type: Article
Title: Molecular simulation studies of hydrogen enriched methane (HEM) storage in Covalent Organic Frameworks
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.micromeso.2016.05.030
Publisher version: http://dx.doi.org/10.1016/j.micromeso.2016.05.030
Language: English
Additional information: Copyright © 2016 Elsevier Inc. All rights reserved.
Keywords: Science & Technology, Physical Sciences, Technology, Chemistry, Applied, Chemistry, Physical, Nanoscience & Nanotechnology, Materials Science, Multidisciplinary, Chemistry, Science & Technology - Other Topics, Materials Science, Hydrogen enriched methane storage, Covalent organic framework, Hythane, Molecular simulations, Computer-simulations, Adsorption, Mixtures, Design, Fuel, Gas
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/1509537
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