| abstract |
The present invention relates to zeolite adsorbents in aggregated form having the following: The tortuosity factor τ calculated from the pore distribution determined by mercury intrusion porosimetry is strictly greater than 1 and strictly less than 3 and by mercury porosimetry The porosity p p to be determined is 25% to 35%, where Vma represents a macropore volume, Vme represents a mesopore volume, and Vg is cm3. The particle volume of adsorbent in g-1 units is shown. The present invention also relates to a method of producing it and a method of separating para-xylene from an aromatic hydrocarbon isomer fraction containing 8 carbon atoms by adsorbing para-xylene with the above adsorbent. |