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Phase equilibrium properties of CO 2 /CH 4 mixed gas hydroquinone clathrates: Experimental data and model predictions

Coupan, Romuald and Conde, Maria Martin and Miqueu, Christelle and Dicharry, Christophe and Torré, Jean-Philippe Phase equilibrium properties of CO 2 /CH 4 mixed gas hydroquinone clathrates: Experimental data and model predictions. (2018) The Journal of Chemical Thermodynamics, 116. 230-234. ISSN 0021-9614

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Official URL: https://doi.org/10.1016/j.jct.2017.09.021

Abstract

Hydroquinone (HQ) clathrates seem to be promising inclusion compounds for selective CO2 capture from gas mixtures. However, to date no phase equilibrium data are known in literature for mixed-gas HQ clathrates. This study presents experimental equilibrium pressures obtained within a range of 298–343 K for different CO2/CH4 gas mixtures. The clathrate composition is given for each equilibrium point. The capture selectivity is calculated from the molar composition of the CO2/CH4 gas mixture in the clathrate and in the gas phase. The results obtained reveal that CH4 molecules in the CO2/CH4 mixtures are preferentially captured at equilibrium conditions. Our experimental data are compared against numerical predictions obtained from thermodynamic modeling using the Conde’s model. Very good agreement is found between the calculated and experimental data in terms of clathrate phase equilibria.

Item Type:Article
HAL Id:hal-01987925
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Total (FRANCE)
Other partners > Università degli Studi Roma Tre (ITALY)
Other partners > Université de Pau et des Pays de l'Adour - UPPA (FRANCE)
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Funders:
Total E&P
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Deposited On:21 Jan 2019 12:55

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