Solid–liquid equilibria of three binary systems: {1-Ethyl-3-methylimidazolium hexafluorophosphate+2-phenylimidazole, or 4,5-diphenylimidazole or 2,4,5-triphenylimidazole}

2007 ◽  
Vol 456 (2) ◽  
pp. 114-119 ◽  
Author(s):  
Hocine Sifaoui ◽  
Ahmed Ait-Kaci ◽  
Ali Modarressi ◽  
Marek Rogalski
Keyword(s):  
Binary Systems ◽  
Solid Liquid

scholarly journals Solubility of Anthraquinone Derivatives in Supercritical Carbon Dioxide: New Correlations

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 460
Author(s):  
Ratna Surya Alwi ◽  
Chandrasekhar Garlapati ◽  
Kazuhiro Tamura
Keyword(s):  
Carbon Dioxide ◽  
Liquid Phase ◽  
Supercritical Carbon Dioxide ◽  
Binary Systems ◽  
Relative Deviation ◽  
Anthraquinone Derivatives ◽  
New Models ◽  
Solubility Isotherms ◽  
Solid Liquid ◽  
Supercritical Carbon

Solubility of several anthraquinone derivatives in supercritical carbon dioxide was readily available in the literature, but correcting ability of the existing models was poor. Therefore, in this work, two new models have been developed for better correlation based on solid–liquid phase equilibria. The new model has five adjustable parameters correlating the solubility isotherms as a function of temperature. The accuracy of the proposed models was evaluated by correlating 25 binary systems. The proposed models observed provide the best overall correlations. The overall deviation between the experimental and the correlated results was less than 11.46% in averaged absolute relative deviation (AARD). Moreover, exiting solubility models were also evaluated for all the compounds for the comparison purpose.

scholarly journals Effect of Cation Structure in Quinolinium-Based Ionic Liquids on the Solubility in Aromatic Sulfur Compounds or Heptane: Thermodynamic Study on Phase Diagrams

Molecules ◽  
2020 ◽  
Vol 25 (23) ◽  
pp. 5687
Author(s):  
Marta Królikowska ◽  
Marek Królikowski ◽  
Urszula Domańska
Keyword(s):  
Ionic Liquids ◽  
Phase Diagrams ◽  
Binary Systems ◽  
Ambient Pressure ◽  
Equilibrium Phase ◽  
Sulfur Compounds ◽  
Solution Temperature ◽  
Organic Sulfur Compounds ◽  
Nrtl Equation ◽  
Solid Liquid

Experimental and theoretical studies on thermodynamic properties of quinolinium-based ionic liquids (ILs) based on bis(trifluoromethylsulfonyl)imide anion (namely N-butyl-quinoloinium bis(trifluoromethylsulfonyl)imide, [BQuin][NTf2], N-hexylquinoloinium bis(trifluoromethyl-sulfonyl)imide, [HQuin][NTf2], and N-octylquinoloinium bis(trifluoromethyl-sulfonyl)imide, [OQuin][NTf2]) with aromatic sulfur compounds and heptane, as a model compound of fuel were examined in order to assess the applicability of the studied ionic liquids for desulfurization of fuels. With this aim, the temperature-composition phase diagrams of 13 binary mixtures composed of organic sulfur compounds (thiophene, benzothiophene, or 2-methylthiophene) or heptane and ionic liquid (IL) were investigated at ambient pressure. A dynamic method was used to determine the (solid–liquid) equilibrium phase diagrams in binary systems over a wide composition range and temperature range from T = 255.15 to 365.15 K up to the fusion temperature of ILs. The immiscibility gap with an upper critical solution temperature (UCST) was observed for each binary system under study. The influence of the alkane chain length of the substituent on the IL cation and of the sulfur compounds (the aromaticity of the solvent) was described. The experimental (solid + liquid) phase equilibrium dataset were successfully correlated using the well-known NRTL equation.

scholarly journals The boundary integral theory for slow and rapid curved solid/liquid interfaces propagating into binary systems

2018 ◽  
Vol 376 (2113) ◽  
pp. 20170218 ◽  
Author(s):  
Peter K. Galenko ◽  
Dmitri V. Alexandrov ◽  
Ekaterina A. Titova
Keyword(s):  
Binary Systems ◽  
Computational Modelling ◽  
Selection Criterion ◽  
Type Equation ◽  
Boundary Integral ◽  
Boundary Integral Method ◽  
Isotropic Case ◽  
Liquid Interfaces ◽  
Stationary Growth ◽  
Solid Liquid

The boundary integral method for propagating solid/liquid interfaces is detailed with allowance for the thermo-solutal Stefan-type models. Two types of mass transfer mechanisms corresponding to the local equilibrium (parabolic-type equation) and local non-equilibrium (hyperbolic-type equation) solidification conditions are considered. A unified integro-differential equation for the curved interface is derived. This equation contains the steady-state conditions of solidification as a special case. The boundary integral analysis demonstrates how to derive the quasi-stationary Ivantsov and Horvay–Cahn solutions that, respectively, define the paraboloidal and elliptical crystal shapes. In the limit of highest Péclet numbers, these quasi-stationary solutions describe the shape of the area around the dendritic tip in the form of a smooth sphere in the isotropic case and a deformed sphere along the directions of anisotropy strength in the anisotropic case. A thermo-solutal selection criterion of the quasi-stationary growth mode of dendrites which includes arbitrary Péclet numbers is obtained. To demonstrate the selection of patterns, computational modelling of the quasi-stationary growth of crystals in a binary mixture is carried out. The modelling makes it possible to obtain selected structures in the form of dendritic, fractal or planar crystals. This article is part of the theme issue ‘From atomistic interfaces to dendritic patterns’.

An enhanced “first freezing point” method for solid–liquid–gas equilibrium measurements in binary systems

2015 ◽  
Vol 104 ◽  
pp. 301-306 ◽  
Author(s):  
Sandro González-Arias ◽  
Francisco J. Verónico-Sánchez ◽  
Octavio Elizalde-Solis ◽  
Abel Zúñiga-Moreno ◽  
Luis E. Camacho-Camacho
Keyword(s):  
Binary Systems ◽  
Freezing Point ◽  
Point Method ◽  
Solid Liquid

Solid–Liquid Equilibria in the Binary Systems of Saturated Fatty Acids or Triglycerides (C12 to C18) + Hexadecane

2016 ◽  
Vol 62 (1) ◽  
pp. 35-43 ◽  
Author(s):  
Kazuko Yui ◽  
Yasuhiro Itsukaichi ◽  
Takuro Kobayashi ◽  
Tomoya Tsuji ◽  
Keisuke Fukui ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Binary Systems ◽  
Saturated Fatty Acids ◽  
Solid Liquid
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