6533b831fe1ef96bd12996e2

RESEARCH PRODUCT

Adsorption of gaseous p-xylene and m-xylene on NaY, KY, and BaY zeolites. Part 2: Modeling. Enthalpies and entropies of adsorption

Marie-hélène Simonot-grangeJean-pierre Bellat

subject

LangmuirChemistryInorganic chemistryEnthalpyLangmuir adsorption modelMolecular sievem-Xylenep-Xylenesymbols.namesakechemistry.chemical_compoundAdsorptionsymbolsZeoliteGeneral Environmental Science

description

Abstract The adsorption isotherms of xylenes are described by Henry's law and Langmuir's model on NaY and KY and the Dubinin-Radushkevich model on BaY. The isoteric enthalpies of adsorption show on each zeolite that the adsorbate-adsorbent interactions are nearly the same with both isomers. They are stronger on BaY than on NaY and KY. The adsorbate-adsorbate interactions are stronger with m-xylene than with p-xylene and especially outstanding on KY. The entropies of adsorption show that the mobility of the adsorbate is lower with m-xylene than with p-xylene. The isosteric free enthalpies of adsorption are related to the acidity of each zeolite. BaY has a stronger acidity and a greater ability to adsorb xylenes than NaY and KY.

yearjournalcountryeditionlanguage
1995-03-01Zeolites
https://doi.org/10.1016/0144-2449(94)00048-w