Department of Manufacturing, Mondragon Goi Eskola Politeknikoa (MGEP), Loramendi 4, Apartado 23, 20500 Mondragon, Spain.
J Chem Phys. 2010 Mar 21;132(11):114506. doi: 10.1063/1.3354114.
In this study, we have measured the thermodiffusion coefficients of six hydrocarbon liquid ternary mixtures at 25 degrees C using the thermogravitational technique. Mixtures of 1,2,3,4-tetrahydronaphthalene-isobutylbenzene-n-dodecane at four different concentrations and 1,2,3,4-tetrahydronaphthalene-isobutylbenzene-n-decane at two concentrations have been considered. We have used a plane-thermogravitational column with a small gap dimension to improve the accuracy of the recently reported data. The obtained results have been confirmed by measurements in a cylindrical column. We have also measured the thermodiffusion coefficients of 13 binary mixtures between the different components of ternaries in order to analyze the validity of the additive rule proposed in the literature to determine thermodiffusion coefficients of ternary mixtures from binary thermodiffusion data. A new correlation based on column separation, which reproduces the data within the experimental error, is proposed.
在这项研究中，我们使用重力热扩散技术在 25°C 下测量了六种碳氢液体三元混合物的热扩散系数。我们考虑了四个不同浓度的 1,2,3,4-四氢萘-异丁基苯-n-十二烷和两个浓度的 1,2,3,4-四氢萘-异丁基苯-n-癸烷混合物。我们使用了带有小间隙尺寸的平面重力热扩散柱来提高最近报道的数据的准确性。通过在圆柱柱体中的测量来验证了获得的结果。我们还测量了 13 种二元混合物的热扩散系数，这些混合物是在三元混合物的不同成分之间的，以分析文献中提出的加和规则的有效性，该规则用于从二元热扩散数据确定三元混合物的热扩散系数。提出了一种基于柱分离的新关联，该关联在实验误差范围内再现了数据。
