| abstract |
The present invention relates to an adsorbent comprising a zeolite phase and a non-zeolite phase, the adsorbent having an external surface area of less than or equal to 30 m 2 ·g -1 , preferably less than or equal to 20 m 2 ·g -1 , comprising at least one having The zeolite phase of the X zeolite of the FAU structure, and the pore size distribution, determined by mercury intrusion in accordance with standard ASTM D4284-83 and represented by the volume distribution dV/dlogDHg, where DHg is the apparent diameter of the pores and V is the pore volume, Its mode is between 100 nm and 250 nm (limits inclusive). The present invention also relates to a process for the preparation of the adsorbent and its use, particularly for the separation of xylene isomers. |