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B.C. Lippens, J.H. De Boer, J. Catal. 4 (1965) 319.

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Article

Dynamic Adsorption and Desorption of CO2 from Binary Mixtures of CH4 and C3H8 on X Type Zeolites

1Laboratoire de Chimie des Milieux et des Matériaux Inorganiques (LC2MI), URCHI / Université des Sciences et Techniques de Masuku (USTM), BP : 943 Franceville-Gabon

2Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), UMR 7285 CNRS / Université de Poitiers, 4 Rue Michel Brunet, 86022 Poitiers Cedex, France


American Journal of Environmental Protection. 2022, Vol. 10 No. 2, 83-90
DOI: 10.12691/env-10-2-5
Copyright © 2022 Science and Education Publishing

Cite this paper:
Charly Mve Mfoumou, Pradel Tonda-Mikiela, Francis Ngoye, Thomas Belin, Samuel Mignard. Dynamic Adsorption and Desorption of CO2 from Binary Mixtures of CH4 and C3H8 on X Type Zeolites. American Journal of Environmental Protection. 2022; 10(2):83-90. doi: 10.12691/env-10-2-5.

Correspondence to: Charly  Mve Mfoumou, Laboratoire de Chimie des Milieux et des Matériaux Inorganiques (LC2MI), URCHI / Université des Sciences et Techniques de Masuku (USTM), BP : 943 Franceville-Gabon. Email: charly.mvemfoumou@univ-masuku.org

Abstract

Dynamic adsorption and desorption of carbon dioxide (CO2) from binary gas mixtures (CO2/CH4 and CO2/C3H8) was carried out on BaX and NaX zeolites in order to study the influence of methane and propane on the CO2 adsorption capacities and on the preferential adsorption sites of CO2. The adsorption proprieties of CH4 and C3H8 molecules on the adsorbents were also evaluated. This study enabled to conclude that methane has no affinity with NaX and BaX zeolites in our experimental conditions. On the other hand, whatever the adsorbent studied, the results show favorable adsorption sites to trapping of propane. The adsorption capacities of propane at saturation on NaX and BaX zeolites are 0.035 and 0.075 mmol g-1 respectively. However, BaX zeolite is the adsorbent which presents more affinity for propane with the strongest propane/zeolite interactions. The study of CO2 adsorption in presence CH4 and C3H8 on the NaX zeolite indicates a decrease of the CO2/cation interactions and of adsorbed CO2 amounts at saturation. The capacities loss are about of 17% and 30% when carbon dioxide adsorption is carried out in binary mixture CO2/CH4 and CO2/C3H8 respectively. In addition, a loss of preferential adsorption sites of carbon dioxide between 443 - 483 K is also observable in the presence of CH4 on NaX zeolite. However on BaX zeolite, the presence of CH4 and C3H8 improves the accumulation of CO2 in the porosity. The capacities of CO2 adsorption are improved about of 18% whatever the gas mixture studied. Moreover, contrary to NaX zeolite, a conservation of preferential adsorption sites of CO2 on BaX zeolite in the temperature range studied (295 - 623 K) is visible. It seems that the presence of methane and propane doesn’t affect the adsorption proprieties of carbon dioxide on BaX zeolite in our experimental conditions.

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