Zeolite adsorbents based on barium, strontium, potassium and sodium, preparation process therefor, and uses thereof
AssigneesArkema France, Ifp Energies Nouvelles
InventorsCatherine Laroche, Ludivine Bouvier, Javier Perez-Pellitero, Marie-Laurence Labede
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Abstract
The present invention relates to zeolite adsorbents based on agglomerated crystals of zeolite X comprising barium, potassium, sodium and strontium. These adsorbents have applications in the separation of fractions of aromatic C8 isomers and in particular xylenes.
Claims21
Zeolite adsorbent comprising zeolite X crystals and comprising barium, potassium, strontium and sodium, in which the K2O/(K2O+SrO+BaO+Na2O) molar ratio of the species in oxide form is between 0.015 and 0.08, limits included, and the SrO/(K2O+SrO+BaO+Na2O) molar ratio of the species in oxide form is between 0.005 and 0.08, limits included.
Dependencies are inferred from the claim text.