PROCESS FOR SEPARATING PARA-XYLENE

摘要

A process for separating para-xylene in high purity and at high recovery from a feed stream comprising para-xylene and at least one other C8 aromatic isomer which employs an adsorbent comprising a type X or a type Y zeolite containing barium and strontium at the exchangeable cationic sites in a weight ratio of barium to strontium of from about 1:1 to about 15:1 to selectively adsorb para-xy-lene from the feed stream and a desorbent material comprising paradiethylbenzene to remove the adsorbed para-xylene from the adsorbent.