METHOD FOR SEPARATING AROMATIC COMPOUNDS FROM MIXTURE CONTAINING AROMATIC COMPOUNDS AND ALIPHATIC COMPOUNDS

摘要

PURPOSE: A separation method of aromatic compounds from mixed liquid including aromatic compounds and aliphatic compounds is provided to offer economical and environmental-friendly effects by regenerating ionic liquid continuously. CONSTITUTION: A separation method of aromatic compounds includes a step for separating the aromatic compounds from the mixed liquid by a liquid-liquid extraction method. The ionic liquid includes at least one or more compound including the compound indicated to a chemical formula 1(Cat^+)(An^-). The Cat^+ is a cation selected from consisting of four-level phosphonium, a sulfonium, an imidazolium, a pyridinium, a pyrazolium, Piperidinyum, Pirolridinyum, a triazolium, an oxazolium, a thiazolium, a pyrazinium, and a pyrimidinium and pyridazinium etc. The An^- is an anion including a halogen element.