新型双温沸点仪研制及其在物理化学实验教学中应用  

Development of New Double-temperature Ebulliometer and Its Application in Physical Chemistry Experiment Teaching

作　　者：祝淑颖 郑欧 吴舒婷 孙燕琼 李奕 林子俺 ZHU Shuying;ZHENG Ou;WU Shuting;SUN Yanqiong;LI Yi;LIN Zian(College of Chemistry,Fuzhou University,Fuzhou 350116,China)

机构地区：[1]福州大学化学学院,福州350116

出　　处：《实验室研究与探索》2024年第12期123-126,共4页Research and Exploration In Laboratory

基　　金：福建省本科高校教育教学研究项目(FBJG20220268);福州大学本科生开放探索性实验项目(校教〔2023〕28号)。

摘　　要：“双液系气-液相图的绘制”是重要的物理化学基础实验,然而其传统教学中所用的单温沸点仪在相图测绘中存在分馏效应、气相温度无法直接测量、相平衡过程无法监测等问题,导致所绘制气-液T-x相图失真。针对上述问题,提出了温度补偿校正方法,研制了带有温度补偿功能的双温沸点仪,并将其应用于“双液系气-液相图的绘制”实验教学实践。实践结果表明,应用新型双温沸点仪能有效监测气-液两相平衡建立过程,并消除了分馏效应,所绘相图准确。该双温沸点仪的设计和应用,有利于提升学生对气-液相图实验原理的理解,启发学生勤于思考,利用所学知识解决复杂问题的能力。The“binary liquid-gas phase diagram drawing”is an important basic experiment of physical chemistry.However,there are problems such as fractionation effect,inability to directly measure gas phase temperature,and inability to monitor phase equilibrium process when a classic single temperature ebulliometer is used,which leads to the distortion of the gas-liquid phase diagram.Focusing on the above problems,the method of temperature compensation correction is proposed in this paper.A thermal compensated double temperature ebulliometer is developed.And it is applied to the experimental teaching practice of“binary liquid-gas phase diagram drawing”.The practice results show that the new two-temperature ebulliometer can effectively solve fractionation effect.The operation is simple.The obtained data are accurate.And the error between the drawn phase diagram and the theoretical value is small.The successful design and application of the double-temperature ebulliometer is conducive to improve students'understanding of the experimental principle of binary liquid-gas phase diagram.The experiment inspires students to think diligently,uses the knowledge to solve complex problems,cultivates them scientific literacy in solving problem,and helps the cultivation of top-notch talents.

关 键 词：双温沸点仪 温度补偿 物理化学实验 

分 类 号：O64[理学—物理化学]