ZEOLITE ADSORBENT IN THE FORM OF LOW-TORTUOSITY AGGLOMERATES

摘要

ZEOLITE ADSORBENT IN THE FORM OF LOW-TORTUOSITY AGGLOMERATES The invention concerns a zeolite adsorbent in the form of agglomerates, having: - a tortuosity factor τ, calculated from the pore distribution determined by mercury intrusion porosimetry, strictly greater than 1 and strictly less than 3, - a porosity εp, determined by mercury porosimetry, of between 25% and 35%, where Vma designates the macroporous volume, Vme the mesoporous volume and Vg, the grain volume of the adsorbent, in cm3.g-1. The invention also concerns the method for preparing same and a method for separating para-xylene from aromatic hydrocarbon isomer fractions containing 8 carbon atoms by adsorbing the para-xylene by means of said adsorbent. [No Available Figure]