Zeolite-based adsorbents based on lsx zeolite of controlled outer surface area, process for preparing them and uses thereof
AssigneesIfp Energies Nouvelles, Arkema France
InventorsLUDIVINE BOUVIER, CÉCILE LUTZ, CATHERINE LAROCHE, JULIEN GRANDJEAN, ARNAUD BAUDOT
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Abstract
The present invention relates to a zeolite-based adsorbent comprising at least one zeolite of FAU structure of LSX type and comprising barium and/or potassium, in which the outer surface area of said zeolite-based adsorbent, measured by nitrogen adsorption, is between 20 m2·g−1 and 100 m2·g−1, limits inclusive. The present invention also relates to the use of such a zeolite-based adsorbent as an adsorption agent, and also to the process for separating para-xylene from aromatic isomer fractions containing 8 carbon atoms.
Claims22
A zeolite-based adsorbent comprising at least one zeolite of FAU structure of LSX type, comprising at least one of barium or potassium, the zeolite-based adsorbent having an outer surface area, wherein the outer surface area of said zeolite-based adsorbent as measured by nitrogen adsorption is between 20 m2·g−1 and 100 m2·g−1, limits inclusive.
Dependencies are inferred from the claim text.