SEPARATION OF META-AND PARA-ETHYLPHENOLS

PURPOSE:To enable industrial separation of m-ethylphenol and p-ethyl-phenol from a mixture containing ethylphenol isomers in high separation rate. CONSTITUTION:In the separation of m- and p-ethylphenol from a mixture containing ethylphenol isomers through adsorption and desorption, a K-Y type zeolit...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUMOTO MASAO, IDAI TSUTOMU, SHIMURA MITSUNORI, SHIRATO YOSHIMI, YOKOTA ZENICHI, HAKOZAKI TOMONORI
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To enable industrial separation of m-ethylphenol and p-ethyl-phenol from a mixture containing ethylphenol isomers in high separation rate. CONSTITUTION:In the separation of m- and p-ethylphenol from a mixture containing ethylphenol isomers through adsorption and desorption, a K-Y type zeolite is used as an adsorbent, while an aliphatic 2-4C alcohol single or a combination thereof is used as a desorbing agent. The adsorption and desorption treatment is performed at a temperature higher than the boiling point of the desorbent under such a pressure that can keep the substrate to be separated, desorbent and separated isomers in a liquid phase to separate m-ethylphenol as raffinate from p-ethylphenol as an extract. The adsorption and desorption is preferably effected using a pseudomoving bed, and the extract is further subjected to crystallization to give p-ethylphenol of high purity.