Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Analysis of hydrogen storage in nanoporous materials for low carbon energy applications
AU - Bimbo, Nuno
AU - Ting, Valeska P.
AU - Hruzewicz-Kolodziejczyk, Anna
AU - Mays, Timothy J.
PY - 2011/8/3
Y1 - 2011/8/3
N2 - A robust, simple methodology for analysis of isotherms for the adsorption of fluids above their critical temperature onto nanostructured materials is presented. The analysis of hydrogen adsorption in a metal-organic framework is used as an example to illustrate the methodology, which allows the estimation of the absolute adsorption into nanoporous systems. Further advantages of employing this analysis are that adsorption systems can be described using a small number of parameters, and that excess and absolute isotherms can be extrapolated and used to predict adsorption behaviour at higher pressures and over different temperature ranges. Thermodynamic calculations, using the exact Clapeyron equation and the Clausius-Clapeyron approximation applied to the example dataset, are presented and compared. Conventional compression of hydrogen and adsorptive storage are evaluated, with an illustration of the pressure ranges in which adsorption facilitates storage of greater volumes of hydrogen than normal compression in the same operating conditions.
AB - A robust, simple methodology for analysis of isotherms for the adsorption of fluids above their critical temperature onto nanostructured materials is presented. The analysis of hydrogen adsorption in a metal-organic framework is used as an example to illustrate the methodology, which allows the estimation of the absolute adsorption into nanoporous systems. Further advantages of employing this analysis are that adsorption systems can be described using a small number of parameters, and that excess and absolute isotherms can be extrapolated and used to predict adsorption behaviour at higher pressures and over different temperature ranges. Thermodynamic calculations, using the exact Clapeyron equation and the Clausius-Clapeyron approximation applied to the example dataset, are presented and compared. Conventional compression of hydrogen and adsorptive storage are evaluated, with an illustration of the pressure ranges in which adsorption facilitates storage of greater volumes of hydrogen than normal compression in the same operating conditions.
KW - METAL-ORGANIC FRAMEWORKS
KW - CARBIDE-DERIVED CARBONS
KW - GAS-ADSORPTION
KW - POROUS MATERIALS
KW - HIGH-PRESSURE
KW - POROSITY
KW - SOLIDS
KW - SCATTERING
KW - ISOTHERMS
KW - EQUATIONS
U2 - 10.1039/c0fd00010h
DO - 10.1039/c0fd00010h
M3 - Journal article
VL - 151
SP - 59
EP - 74
JO - Faraday Discussions
JF - Faraday Discussions
SN - 1359-6640
IS - 1-2
ER -