Blanco Pablo, Mounir Bou-Ali M, Platten J Karl, Urteaga Pedro, Madariaga Jose A, Santamaria Carlos
Manufacturing Department, MGEP Mondragon Goi Eskola Politeknikoa, Loramendi 4 Apdo. 23, 20500 Mondragon, Spain.
J Chem Phys. 2008 Nov 7;129(17):174504. doi: 10.1063/1.2945901.
In this article we determined the thermal diffusion coefficient (D(T)) in equimolar mixtures of n-alkanes nC(i)-nC(12) (i=5,6,7,8,9,17,18), nC(i)-nC(10) (i=5,6,7,15,16,17,18), and nC(i)-nC(6) (i=10,12,14,16,18) at 25 degrees C and at atmospheric pressure using the thermogravitational technique. The results obtained from this study together with the previously published ones in the series of nC(i)-nC(18) (i=5,6,7,8,9,10,11,12,13) show that the main parameter that determines D(T) in each series is in association with the molecular weights of the mixture's components. However, an empirical quantitative correlation has been obtained between D(T), the molecular weights of the components, the viscosity, and the thermal expansion coefficient of the mixtures. This is the first report of a closely accurate correlation for D(T) in liquid mixtures.
在本文中，我们使用热重力技术测定了正构烷烃nC(i)-nC(12)（i = 5、6、7、8、9、17、18）、nC(i)-nC(10)（i = 5、6、7、15、16、17、18）和nC(i)-nC(6)（i = 10、12、14、16、18）等摩尔混合物在25℃和大气压下的热扩散系数（D(T)）。本研究获得的结果与之前发表的关于nC(i)-nC(18)（i = 5、6、7、8、9、10、11、12、13）系列的结果表明，每个系列中决定D(T)的主要参数与混合物组分的分子量相关。然而，已获得D(T)、组分分子量、混合物粘度和热膨胀系数之间的经验定量相关性。这是关于液体混合物中D(T)紧密精确相关性的首次报道。
