Adsorption de CO2 par des zeolithes X echangees par des cations bivalents |
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| Affiliation: | 1. Beykent University, Engineering and Architecture Faculty, Department of Chemical Engineering, Ayazağa, İstanbul, Turkey;2. Malaviya National Institute of Technology (MNIT), Department of Chemical Engineering, Jaipur, Rajasthan, India;3. Bu-Ali Sina University, Faculty of Chemistry, Department of Physical Chemistry, Hamedan, Iran;4. Department of Chemical & Materials Engineering, Faculty of Engineering, King Abdulaziz University, P.O. Box 80204, Jeddah 21589, Saudi Arabia |
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| Abstract: | Adsorption of carbon dioxide by X zeolites exchanged with bivalent cations. The adsorption of carbon dioxide by X zeolites exchanged by Mg2+, Sr2+, Zn2+ and Cu2+ cations was studied by thermogravimetry. The corresponding isosteric heats of adsorption decrease with the filling of pore volume, except for Cu(63)X. This evolution of the heat indicates a specific interaction between cations present within supercages and CO2 molecules. Several models have been used in order to describe the experimental isotherms. The best fit of sorption isotherm data was obtained with the Sips model. |
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