MRC, Université libre de Bruxelles, Department of Chemical Physics, Avenue F. D. Roosevelt, CP165/32, B-1050 Brussels, Belgium.
Physikalisches Institut, Universität Bayreuth, 95440 Bayreuth, Germany.
J Chem Phys. 2019 Oct 7;151(13):134502. doi: 10.1063/1.5100595.
The Soret coefficients of a set of ternary systems of 1,2,3,4-tetrahydronaphthalene (THN), isobutylbenzene (IBB), and n-dodecane (nC) at 298.15 K were measured under microgravity condition aboard the International Space Station in the frame of the DCMIX1 experiment. The present work includes a comprehensive study of possible data processing sequences for the interpretation of interferometric Soret experiments in ternary systems. Several data processing methodologies are discussed. A significant concentration dependence of the Soret coefficients is observed. In the present study, we have obtained large and positive values for THN and negative ones for IBB in all investigated systems. A linear relation between the Soret coefficients of two components is derived for each system and allows validating experimentally the coefficients measured in other experiments.
在 DCMIX1 实验中，利用国际空间站的微重力条件，测量了 1,2,3,4-四氢萘（THN）、异丁基苯（IBB）和正十二烷（nC）组成的一组三元体系在 298.15 K 时的 Soret 系数。本工作包括对三元体系中干涉 Soret 实验的可能数据处理序列进行全面研究。讨论了几种数据处理方法。观察到 Soret 系数与浓度有显著的依赖关系。在本研究中，我们在所有研究的体系中都得到了 THN 的大正值和 IBB 的负 Soret 系数。对于每个体系，推导出了两个组分的 Soret 系数之间的线性关系，这使得可以通过实验验证在其他实验中测量的系数。
