气液色谱法研究正构醇的自缔合  

Studies on Self-Association of n-AlcohoIs by Gas-Liquid Chromatography

作　　者：周效贤[1] 王毅琳[1] 李松林[1] 郑国康[1] 

机构地区：[1]兰州大学化学系,兰州730000

出　　处：《高等学校化学学报》1993年第6期817-820,共4页Chemical Journal of Chinese Universities

摘　　要：用气液色谱有限浓度法测量了313.15K下C_1—C_4各正构醇在角鲨烷中的活度系数。用连续缔合的Wiehe-Bagley型和Kretschmer-Wiebe型结合物理作用项的双参数模型对实验数据进行处理,得到各醇的自缔合常数和物理相互作用参数。The finite concentration activity coefficients of n-alcohols (C1-C4 ) were measured in squalane at 313. 15 K by using gas-liquid chromatography. The data were treated with Kretschmer-Wiebe and Wiehe-Bagley two-parameter association model, respectively. The self-association equilibrium constants KA and the physical interaction parameters β were evaluated. It is found that the solute activity coefficients for ail systems decrease in the following order : methanol>ethanol>n-propanor> n-butanol. There exists a similar order for the constants KA and β. Both the studied two-parameter models can be fitted to the experimental results satisfactorily.

关 键 词：气液色谱 活度系数 醇 自缔合 

分 类 号：O623.41[理学—有机化学]