Adsorbent with a high macroporosity, usable in a gas adsorption process, especially a PSA process

摘要

A macroporous adsorbent comprising pores having a pore volume (Vm) and a mean pore diameter (dm) such that: Vm>=1 cc.g-1 and dm>=1 mum, Vm and dm being determined by mercury porosimetry; their manufacturing process using a spheronization and freeze-drying technique; and their use for separating or purifying gases, such as air, synthesis gases or hydrocarbons, especially olefins.