Liquid-liquid equilibria, solubility and critical states in the system propionic acid – n-butanol – n-butyl propionate – water at 293.15 K and atmospheric pressure

Результат исследований: Научные публикации в периодических изданияхстатья

Аннотация

The focus of this work is physico-chemical study of model mixtures containing butanol – a component of perspective biofuel. New detailed data on liquid-liquid equilibria (LLE), solubility and critical compositions were obtained at 293.15 K and atmospheric pressure for quaternary propionic acid – n-butanol – n-butyl propionate – water system. Research methods: gas chromatography, “cloud-point technique”. A brief review of the available data on the mutual solubility and LLE in this system is presented. The regularities of phase diagrams evolution with temperature changes are discussed. The compositions of critical phases were determined at 293.15 and 303.15 K. These data gave opportunity for the construction of polythermal critical surface in a 3D composition space. Correlation of LLE results with the use of NRTL indicates sufficient agreement with the calculated data.

Язык оригиналаанглийский
Номер статьи105957
ЖурналJournal of Chemical Thermodynamics
Том141
Ранняя дата в режиме онлайн17 сен 2019
DOI
СостояниеОпубликовано - фев 2020

Предметные области Scopus

  • Атомная и молекулярная физика и оптика
  • Материаловедение (все)
  • Физическая и теоретическая химия

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