Measurement of Soret coefficients in a ternary mixture of toluene–methanol–cyclohexane in convection-free environment
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DOI:
10.1063/1.5017716URI (для ссылок/цитирований):
https://aip.scitation.org/doi/10.1063/1.5017716https://elib.sfu-kras.ru/handle/2311/110857
Автор:
Mialdun, A.
Ryzhkov, I.
Khlybov, O.
Lyubimova, T.
Shevtsova, V.
Коллективный автор:
Институт космических и информационных технологий
Кафедра прикладной математики и компьютерной безопасности
Дата:
2018-01Журнал:
Journal of Chemical PhysicsКвартиль журнала в Scopus:
Q1Квартиль журнала в Web of Science:
Q2Библиографическое описание:
Mialdun, A. Measurement of Soret coefficients in a ternary mixture of toluene–methanol–cyclohexane in convection-free environment [Текст] / A. Mialdun, I. Ryzhkov, O. Khlybov, T. Lyubimova, V. Shevtsova // Journal of Chemical Physics. — 2018. — Т. 148 (№ 4). — С. 044506Аннотация:
We report on the measurement of Soret (ST ) coefficients in the ternary system toluene (T)–methanol
(M)–cyclohexane (Ch) onboard the International Space Station in the experiment selectable optical
diagnostic instrument/DCMIX2 (Diffusion Coefficients Measurement in ternary mIXtures). Nine
experiments were conducted in the range of mean temperatures between 298.15 K and 306.15 K in
the mixture with composition 0.62 (T)–0.31 (M)–0.07 (Ch) in mass fractions. A linear dependence
of the Soret coefficients on temperature was established for the ternary mixture. It has also been
found that, over considered range of mean temperatures, the Soret coefficients of toluene are small
and positive, while the Soret coefficients for methanol are negative and, at least, two times larger.
The present work also presents a comprehensive study of possible methodologies to process raw data
from the Soret experiment in ternary mixtures. All the experiments were processed by seven different
schemes and two of them were identified as the most reliable.We also investigate the error propagation
and explain the reasons for the discrepancy of the results obtained by different schemes.