Résumé:
Adsorption of carbon dioxide by X zeolites exchanged with bivalent cations. The
adsorption of carbon dioxide by X zeolites exchanged by Mg*+, S?, Zn*+ and Cu*+ 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.
