| abstract |
The present invention relates to a zeolite sorbent comprising at least one FAU zeolite having a hierarchical porosity and comprising barium or barium and potassium, wherein the outer surface area of the sorbent is greater than 20 m2.g < -1 & gt ;, the non-zeolite phase content Is from 6% to 12% by weight based on the total weight of the absorbent. The present invention also relates to a process for separating para-xylene from aromatic isomeric fractions having 8 carbon atoms, as well as the use of such a zeolite absorbent as an adsorbent. |