含盐乙醇-水-异辛醇体系液液平衡  

Liquid-liquid equilibrium of ethanol-water-2-ethylhexanol system containing salts

作　　者：鲍静[1] 张雅明[1] 陈伟[1] 

机构地区：[1]南京工业大学化学化工学院,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2004年第3期48-52,共5页Journal of Nanjing Tech University(Natural Science Edition)

摘　　要：用自制的液液平衡釜测定了乙醇-水-异辛醇体系和乙醇-水-异辛醇-氟化钾/氯化钠体系的液液平衡数据。比较了上述3种体系的乙醇在有机相和水相中的分配系数,其中含盐体系高于无盐体系,含氟化钾体系高于氯化钠体系。对所测液液平衡数据用hand方程进行关联,结果良好。Liquid-liquid equilibrium data for the systems of ethanol-water-2-ethylhexanol and ethanol-water-2-ethylhexanol-KF/NaCl were measured using proposed liquid liquid equilibrium apparatus. Comparison of distribution coefficients of ethanol between two phases for above mentioned three kinds of systems, the values of systems containing salts were higher than those of systems without salt,and the values of systems containing potassium fluoride were higher than those of system containing sodium chloride. The experimental data of the LLE were correlated using the Hand equation, and the correlation results were satisfactory.

关 键 词：液液平衡 异辛醇 氟化钾 氯化钠 盐析效应 乙醇 萃取精馏方法 

分 类 号：O658.2[理学—分析化学] O623.411[理学—化学]