南京工业大学学报（自然科学版）2024，Vol.46Issue(1)：28-35,8.DOI:10.3969/j.issn.1671-7627.2024.01.004
甲基丙烯酸水溶液萃取分离液液相平衡数据测定与关联
Determination and correlation of liquid-liquid equilibrium data for extraction and separation of methacrylic acid aqueous solution
摘要
Abstract
This study focused on the challenge in separating methacrylic acid(MAA)from water(H2O)due to their formation of an azeotropic mixture.The research encompassed the selection of extractants for MAA aqueous solution purification,and the determination and correlation of ternary liquid-liquid equilibrium data for MAA-H2O-extractant system.Four extractants,namely toluene,n-hexane,cyclohexane,and dibutyl phthalate(DBP),were investigated for their extraction efficiency.DBP was determined as the optimal extractant with superior comprehensive performance.Under atmospheric pressure,liquid-liquid equilibrium data for the H2O-MAA-DBP ternary system at 20 ℃,30 ℃,and 40 ℃ were measured.The experimental results validated the consistency of the phase equilibrium data with Hand equation and Othmer-Tobias equation,demonstrating a linear correlation coefficient(R2)exceeding 0.99.The UNIQUAC model was used to fit the experimental data and obtain binary interaction parameters for the three components.The root-mean-square-deviation between the model predictions and experimental values was below 0.07,indicating high accuracy of the experimental data and fitting parameters.This provided a basis for the application of DBP in the industrial purification of MAA aqueous solutions.关键词
甲基丙烯酸/水/邻苯二甲酸二丁酯/萃取剂/液液相平衡/提纯Key words
methacrylic acid/water/dibutyl phthalate/extractant/liquid-liquid phase equilibrium/purification分类
化学化工引用本文复制引用
蔡鑫磊,曹靖淇,孙玉玉,汤吉海,黄晶晶,黄益平,乔旭..甲基丙烯酸水溶液萃取分离液液相平衡数据测定与关联[J].南京工业大学学报（自然科学版）,2024,46(1):28-35,8.基金项目
江苏省重点研发计划重大科技示范项目(BE2021710) （BE2021710）
江苏省产学研合作项目(BY20221239) （BY20221239）
栖霞区科技计划(高校院所产学研合作类) （高校院所产学研合作类）
