The relationship between self-diffusion activation energy and Soret coefficient in binary liquid mixtures
The relationship between self-diffusion activation energy and Soret coefficient in binary liquid mixtures
复制标题
二元液体混合物中自扩散活化能与Soret系数的关系
DOI:
10.1016/j.ces.2021.116660
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发表时间:
2021
影响因子:
4.7
通讯作者:
Hallinan, Daniel
中科院分区:
文献类型:
--
作者:
Silverman, Micah;Hallinan, Daniel
The Soret effect is an observed phenomenon in which an applied temperature gradient will induce a concentration gradient in multicomponent mixtures. The Soret coefficient is the ratio of thermally driven diffusion to mutual diffusion driven by concentration gradients. It is measured at steady state when the two driving forces are balanced, i.e. the net flux is zero. This study is designed to explore the potential relationship between the activation energy of self-diffusion of the individual components of a binary mixture and the mixture’s resulting Soret coefficient. This study found a trend of increasingly negative Soret coefficients as the difference in the mole-fraction-weighted self-diffusion activation energies of the components increased.
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