摘要
在常压,298.15,313.15,333.15,353.15K4个温度下,测定了庚烷-苯-N-甲酰吗啉三元体系的液液平衡数据,得到三元体系平衡相图,节点数据的实验可靠性用Othmer-Tobias和Bachman方程进行了检验,实验数据点用UNIQUAC和NRTL模型进行了关联,分别得出了庚-苯-N-甲酰吗啉体系的模型参数,结果表明2种模型都能对该体系进行较准确的预测,相比之下,NRTL更能拟合实验结果;同时从分配系数,分离因子和选择性对N-甲酰吗啉萃取苯的性能进行了研究.
Liquid-liquid equilibrium （LLE） data for ternary system haptane-Benzene-N-formylmorpholine were determined experimentally at temperatures ranging from 298.15 to 353.15 K. Complete phase diagrams were obtained by determining solubility and tie-line data. Tie-line compositions were correlated by Othmer-Tobias and Bachman methods. The universal quasichemical activity coefficien （UNIQUAC） and the non-random two liquids equation （NRTL） were used to predict the phase equilibrium in the system using the interaction parameters determined from experimental data. It is found that UNIQUAC and NRTL used for LLE can provide a good prediction. Distribution coefficients, separation factors and selectivity are evaluated for the immiscibility region. 12figs., 4tabs., 14refs.
出处
《湖南科技大学学报（自然科学版）》
CAS
北大核心
2007年第3期113-117,共5页
Journal of Hunan University of Science And Technology：Natural Science Edition
基金
湖南省自然科学基金资助项目(05JJ40020)
关键词
庚烷
苯
N-甲酰吗啉
液液平衡
heptane
benzene
N-formylmorpholine
liquid-liquid equilibria
