月桂酸-癸酸二元体系的固-液相平衡特性  

Solid-liquid phase behavior of lauric acid and capric acid binary mixtures

作　　者：张奕[1,2] 王朋[1] 戴征舒[1] 张小松[2] 

机构地区：[1]南京师范大学动力工程学院,南京210042 [2]东南大学能源与环境学院,南京210096

出　　处：《哈尔滨工业大学学报》2009年第11期201-204,共4页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(50376052)

摘　　要：介绍了月桂酸-癸酸二元体系相图的特点.用规则溶液模型预测相图中的液相线,分析了液相线方程中分子间相互作用能ue的作用和物理意义.根据月桂酸和癸酸分子的相对大小、结构特点,提出了简化液相线方程的方法,计算了混合物的液相线方程.实验研究月桂酸-癸酸混合物的相变特点,结果表明:月桂酸和癸酸中的杂质对混合物的相变温度有重要影响.The solid-liquid phase behavior was investigated for binary mixtures composed of lauric acid and capric acid. The T - X phase diagram of these mixtures is of an incongruent eutectic type. The roles and characteristics of interaction energies in the equations of liquidus lines were analysed. According to the sizes and structures of the molecules of these fatty acids, the equations were simplified and resolved. The cloud points of these mixtures were experimentally detected by means of in these fatty acids had a notable impact on the phase c cooling curve method. It was found that the impurities hange temperature.

关 键 词：月桂酸 癸酸 相图 浊点 液相线 

分 类 号：O642.42[理学—物理化学]