| 摘要 |
PURPOSE:To separate a cresol isomer mixture readily and in high adsorption selectivity with a zeolite adsorbent and with a desorbing agent containing diethyl ketone, methyln-propyl ketone or methylisopropyl ketone is as essential components. CONSTITUTION:A cresol isomer mixture is continuously adsorbed and separated with a zeolite, preferably that of a faujasite group whose cation is mainly potassium, as an adsorbent, and with a desorbing agent containing diethyl ketone, methyln- propyl ketone or methylisopropyl isopropyl ketone as essential components, preferably in the biquid phase at room temperature-250 deg.C and atmospheric pressure- 30kg/cm<2>. The above-mentioned ketone may be used independently as a desorbing agent, or in and combination with another desorbing, agent may be diluted with a diluent, e.g. a paraffin, cycloparaffin or aromatic hydrocarbon.
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