Zeolite adsorbent in the form of low-tortuosity agglomerates
AssigneesIfp Energies Nouvelles, Arkema France
InventorsCatherine Laroche, Philibert Leflaive, Ludivine Bouvier, Cécile Lutz
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Abstract
Provided is a zeolite-based adsorbent in the form of agglomerates, where the adsorbent having a tortuosity factor, calculated from the pore distribution determined by mercury intrusion porosimetry, of greater than 1 and less than 3. The adsorbent also has a porosity as determined by mercury intrusion porosimetry of between 25% and 35%. The adsorbent is useful in the field of separations in particular in a process for separating para-xylene from aromatic hydrocarbon isomer fractions containing 8 carbon atoms.
Claims16
A zeolite-based adsorbent in the form of agglomerates, said adsorbent having:
- a tortuosity factor t, calculated from the pore distribution determined by mercury intrusion porosimetry, strictly greater than 1 and strictly less than 3;
- and
- a porosity
- e
- p
- =
- Vma
- +
- Vme
- Vg
- ,
- determined by mercury intrusion porosimetry, in which Vma denotes the macropore volume, Vme denotes the mesopore volume and Vg denotes the grain volume, of between 25% and 35%, the volumes being expressed in cm3.g−1.
Dependencies are inferred from the claim text.