高压下正庚烷—醇二元液态系统PVT性质的研究

摘要利用装有光学玻璃窗的高压釜测量了高压下正庚烷分别与乙醇、正丙醇、正丁醇及正戊醇等液体混合物的ＰＶＴ数据。实验采用“直接法”，压力达到近９０ＭＰａ，温度范围为２９８～３７３Ｋ。上述后三个系统高压下的ＰＶＴ数据尚属首次测量。根据实验结果计算出过量摩尔体积和等温压缩率，同时加以讨论，并利用Ｔｈｏｍｓｏｎ方程对上述系统的ＰＶＴ数据进行计算，发现与实验结果符合情况良好。

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	田宜灵
	宋瑛
	李军
	任晓文

关键词：液体混合物 PVT性质摩尔体积过量体积等温压缩率 Thomson方程

Abstract： A high pressure autoclave equipped with windows is described. PVT data of liquid-liquid systems ( n -heptane+ethyl alcohol), ( n -heptane+propnol 1), ( n -heptane+butanol 1) and ( n -heptane+propnol 1), in temperature range from 298 to 373K and at pressure up to 90MPa were measured by direct method. In these investigated systems, the later three were determined for the first time. Excess molar volumes and isothermal compressibilities were also evaluated from the experimental results and some discussions were given. The Thomson Equation was used in computing the PVT properties of the above systems. The results are quite satisfactoty in comparison with experimental data.

Keywords： liquid mixture PVT property molar volume excess molar volume isothermal compressibility the Thomson Equation

Received 1997-07-15;

引用本文:

田宜灵,宋瑛,李军,任晓文.高压下正庚烷—醇二元液态系统PVT性质的研究[J]. 化学工业与工程, 1997,14(3): 3-8

Tian Yiling Song Ying Li Jun Ren Xiaowen .A Study of PVT —Properties for Binary Liquid Mixtures of n —Heptane with Alcohols at High Pressures[J]. Chemcial Industry and Engineering, 1997,14(3): 3-8