Process for separating ethylbenzene from xylenes by selective adsorption on a cesium substituted X zeolite

摘要

The invention relates to a process for selectively adsorbing ethylbenzene from a stream containing one or more isomeric xylenes. The ethylbenzene is adsorbed on Cs-substituted Type X zeolite. Certain alkyl substituted benzene desorbents give the zeolite good ethylbenzene selectivity over the xylenes.