Extractive chromatographic separation process for recovering 3,5

Details Extractive chromatographic separation process for recovering 3,5 Extractive chromatographic separation process for recovering 3,5

1989-11-28

1991-05-28

Therkorn, Ernest G.

Liquid purification or separation

Processes

Chromatography

210674, 2101982, 208310Z, 585828, B01D 1508

Patent

active

050192710

ABSTRACT:
This invention comprises a process for separating 3,5-diethyltoluene from a feed mixture comprising 3,5-diethyltoluene and at least one isomer thereof, which process comprises contacting the mixture at adsorption conditions with an adsorbent comprising an X zeolite cation exchange with a K cation, thereby selectively adsorbing the 3,5-diethyltoluene. The remainder of the feed mixture is removed by desorption at desorption conditions with a desorbent material comprising a monocyclic alkyl-substituted aromatic hydrocation, e.g., p- or m-diethylbenzene or p-cymene and optionally, a diluent, e.g., isooctane.

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