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Creating innovative composite materials to enhance the kinetics of CO 2 capture by hydroquinone clathrates

Coupan, Romuald and Plantier, Frédéric and Torré, Jean-Philippe and Dicharry, Christophe and Sénéchal, Pascale and Guerton, Fabrice and Moonen, Peter and Khoukh, Abdel and Kessas, Sid Ahmed and Hemati, Mehrdji Creating innovative composite materials to enhance the kinetics of CO 2 capture by hydroquinone clathrates. (2017) Chemical Engineering Journal, 325. 35-48. ISSN 1385-8947

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Official URL: https://doi.org/10.1016/j.cej.2017.05.038


This study addresses both the preparation of a reactive medium composed of porous particles impregnated with hydroquinone (HQ), an organic compound capable of forming gas clathrates, and an evaluation of the kinetic performance of these composite materials for CO2 capture. Two types of porous silica particles of different sizes and pore diameters were tested. The porous particles were impregnated with HQ by a dry impregnation (DI) method in a fluidized bed, and by a wet impregnation (WI) method. The impregnation effectiveness of the two methods is discussed, and the reactivity of the composite materials formed in terms of CO2 capture and storage capacity is studied experimentally. The experimental results showed that the HQ adheres well on the silica without any chemical modification of the deposit’s structure. We demonstrated that the impregnation technique plays a very important role in the kinetics of CO2 capture. A series of experiments performed using a magnetic suspension balance at 3.0 MPa and 323 K showed that the silica-based impregnated particles reversibly capture and store CO2, and that the CO2 capture kinetics are significantly enhanced compared to the results obtained with pure powdered HQ. Finally, we demonstrated that CO2 capture is faster with dry-impregnated particles.

Item Type:Article
HAL Id:hal-01563519
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Total (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université de Pau et des Pays de l'Adour - UPPA (FRANCE)
Laboratory name:
Deposited On:30 Jan 2019 15:27

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