枞酸在四种醇类溶剂中的溶解度测定与关联  

Determination and Correlation of the Solubility for Abietic Acid in Four Alocohol Solvents

作　　者：谢宏昭[1] 周龙昌[1] 陈小鹏[1] 王琳琳[1] 黄伊玲[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《高校化学工程学报》2011年第3期385-389,共5页Journal of Chemical Engineering of Chinese Universities

基　　金：国家自然科学基金资助项目(20976031;31060102);广西自然科学基金项目(0991030;2010GXNSFA013042);梧州市科技计划项目(200901011);广西大学科研基金项目(081020);广西教育厅科学研究项目([2006]26;200708LX180);广西教育厅科研资金项目(200700ZL015)

摘　　要：采用激光监视技术判定平衡点,由动态法测定了枞酸在甲醇、无水乙醇、正丙醇、正丁醇中的固液溶解度,实验测定温度由282 K至320 K,用λh方程、Wilson方程、简化方程分别对溶解度实验数据进行关联。结果表明,枞酸在四种醇类溶剂中的溶解度均随温度的升高而增大,且在不同溶剂中枞酸溶解度有较大的差异,大小顺序为:正丁醇>正丙醇>无水乙醇>甲醇。枞酸在四种醇类溶剂中的溶解度实验数据用λh方程、Wilson方程和简化方程关联的平均相对误差最大值分别为1.43%,1.19%和1.24%。上述结果可为枞酸结晶过程溶剂选择提供基础热力学数据。Using the laser monitoring technique to judge the solid-liquid solubility equilibrium terminal,the solid-liquid solubility data of abietic acid in methanol,ethanol,n-propanol and n-butanol were measured by dynamic method,and the λh equation,Wilson equation and empirical equation were used to correlate the solid-liquid solubility data in the temperature range from 282 K to 320 K.The results show that the solid-liquid solubilities of abietic acid in above four alocohol solvents increase with the increase of temperature and the solubilities of abietic acid are different in different solvents,the order is： n-butanoln-propanolethanolmethanol.When using the λh equation,Wilson equation and empirical equation to correlate the solubility data of abietic acid,the maximum average relative deviations are 1.43%,1.19% and 1.24%,respectively.The obtained experimental solubility data and their correlation can provide essential thermodynamic data for solvent selection of abietic acid crystallization.

关 键 词：枞酸 固液平衡 溶解度 λh方程模型 Wilson方程模型 简化方程模型 

分 类 号：TQ013.1[化学工程] O645.12[理学—物理化学]