化工学报2025，Vol.76Issue(2)：686-694,9.DOI:10.11949/0438-1157.20241074
铝铜双金属离子液体在1-己烯/正己烷分离中的应用
Application of aluminum-copper bimetallic ionic liquids in 1-hexene/n-hexane separation
摘要
Abstract
The separation of olefin/alkane in naphtha is the requirement of feedstock optimization and product purification in petrochemical processes,and liquid-liquid extraction is an important olefin/alkane separation method.This study investigated the feasibility of bimetallic ionic liquids for highly selective extraction of olefins using 1-hexene/n-hexane as a model hydrocarbon mixture.The results showed that the aluminum-copper bimetallic ionic liquid had good separation performance for 1-hexene/n-hexane.Under the conditions of a solvent-oil mass ratio of 2 and an extraction temperature of 10℃,the 1-hexene extraction selectivity is 6.33,which is better than conventional imidazole-type ionic liquids and traditional organic solvents.The aluminum-copper bimetallic ionic liquid had good reusability.The anionic structure of the bimetallic ionic liquid was revealed by synchrotron X-ray absorption fine structure spectroscopy(XAFS)and density functional theory(DFT).The interaction of the ionic liquid with 1-hexene and n-hexane was further analyzed by using quantum chemistry software to explain the selective separation of 1-hexene by the bimetallic ionic liquid.关键词
萃取/离子液体/1-己烯/正己烷/分离Key words
extraction/ionic liquids/1-hexene/n-hexane/separation分类
化学工程引用本文复制引用
崔家馨,殷梦凡,郑涛,刘晗,张睿,刘植昌,刘海燕,徐春明,孟祥海..铝铜双金属离子液体在1-己烯/正己烷分离中的应用[J].化工学报,2025,76(2):686-694,9.基金项目
国家自然科学基金项目(22021004,22078359) （22021004,22078359）
