The solid–liquid equilibrium of the binary system H2O–DMSO and the influence of a salt (NaCl, KCl) on the thermodynamic behavior

2011 ◽  
Vol 304 (1-2) ◽  
pp. 12-20 ◽  
Author(s):  
André Mohs ◽  
Sebastian Decker ◽  
Jürgen Gmehling
Keyword(s):  
Binary System ◽  
Liquid Equilibrium ◽  
Thermodynamic Behavior ◽  
Solid Liquid

Investigation on solid-liquid equilibrium for trifluoromethane (R23) plus difluoromethane (R32) binary system

2021 ◽  
Author(s):  
Xian Wang ◽  
Yanxing Zhao ◽  
Xueqiang Dong ◽  
Xiaoyu Yao ◽  
Jingzhou Wang ◽  
...  
Keyword(s):  
Binary System ◽  
Liquid Equilibrium ◽  
Solid Liquid

Solid–liquid equilibria in systems [Cxmim][Tf2N] with diethylamine

2015 ◽  
Vol 87 (5) ◽  
pp. 453-460 ◽  
Author(s):  
Jan Rotrekl ◽  
Pavel Vrbka ◽  
Zuzana Sedláková ◽  
Zdeněk Wagner ◽  
Johan Jacquemin ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Phase Equilibrium ◽  
Binary System ◽  
Activity Coefficients ◽  
Liquid Equilibrium ◽  
Scanning Calorimetry ◽  
Solid Liquid ◽  
System 1

AbstractIn the present work, the solid–liquid–liquid equilibrium in the binary system of diethylamine (1) and ionic liquid (2) 1-methyl-3-ethylimidazolium bis(trifluoromethylsulfonyl)imide and solid–liquid equilibrium in system 1-methyl-3-butylimidazolium bis(trifluoromethylsulfonyl)imide was studied. Phase equilibrium was determined experimentally by means of a polythermic method. These data were then used to determine the activity coefficients for both ionic liquids. For the pure diethylamine the enthalpy of fusion was determined by differential scanning calorimetry, because to the best of our knowledge, this data is not yet reported in the open literature, a contrario of pure ionic liquids tested during this work.

Solid-liquid equilibrium in a binary system with incongruent melting complex compound

1991 ◽  
Vol 190 (2) ◽  
pp. 209-216 ◽  
Author(s):  
D. Wyrzykowska-Stankiewicz ◽  
M. Palczewska-Tulińska
Keyword(s):  
Binary System ◽  
Complex Compound ◽  
Incongruent Melting ◽  
Liquid Equilibrium ◽  
Solid Liquid

Solid-Liquid and Liquid-Liquid Equilibrium in the Formamide-Acetophenone System

2006 ◽  
Vol 71 (9) ◽  
pp. 1350-1358 ◽  
Author(s):  
Zuzana Sedláková ◽  
Ivona Malijevská ◽  
Karel Řehák ◽  
Pavel Vrbka
Keyword(s):  
Heat Capacity ◽  
Binary System ◽  
Stable Region ◽  
Wilson Equation ◽  
Liquid Equilibrium ◽  
Recording Time ◽  
Wide Range ◽  
Transition Enthalpy ◽  
Turbidity Method ◽  
Solid Liquid

Solid-liquid (s-l) and liquid-liquid (l-l) equilibrium was determined in the binary system formamide-acetophenone. The s-l equilibrium was measured by recording time-temperature cooling and warming curves. The l-l equilibrium was obtained in a wide range of temperatures by the turbidity method. A considerable supercooling preceding solidification made it possible to examine metastable l-l equilibrium yet at temperatures lower than the solidus ones. Activity coefficients evaluated from the stable region of l-l equilibrium were correlated by Novák's modification of the Wilson equation. Calculation of the s-l equilibrium was performed with the obtained parameters. Heat capacity of solid and liquid acetophenone was measured and its dependence on temperature is given. The transition enthalpy betwen two solid modifications of acetophenone is also given.

Solid-Liquid Equilibrium in the Systems with an Ionic Liquid

2008 ◽  
Vol 73 (5) ◽  
pp. 657-664 ◽  
Author(s):  
Zuzana Sedláková ◽  
Hélène Sauton ◽  
Vladimír Hynek ◽  
Ivona Malijevská
Keyword(s):  
Ionic Liquid ◽  
Acetic Acid ◽  
Binary System ◽  
Propionic Acid ◽  
Solid Phase ◽  
Ternary Systems ◽  
Liquid Equilibrium ◽  
Solid Compound ◽  
Active Interest ◽  
Solid Liquid

An active interest in ionic liquids has grown over the last years. This relatively new class of solvents appears to be potentially useful as a "greener" alternative to volatile organic compounds. This work was aimed at studying the effect of addition of the ionic liquid 1-butyl-3-methylimidazolium chloride to two systems (acetic acid (1)-formamide (2) and propionic acid (1)-formamide (2)) on formation of a compound in the solid phase. In previous work, the presence of a solid compound with a formula (CH3COOH)2·HCONH2 was investigated in the binary system acetic acid (1)-formamide (2) and a stable solid compound with a different formula CH3CH2COOH·(HCONH2)2 was found in the binary system propionic acid (1)-formamide (2). In both cases the compound formation is attributed to a strong cross-association (O···H···N). Solid-liquid equilibrium of the systems measured in this work was determined from time-temperature warming curves. In both measured ternary systems with a small addition of the ionic liquid 1-butyl-3-methylimidazolium chloride (i.e. the systems acetic acid (1)-formamide (2)-1-butyl-3-methylimidazolium chloride (3) and propionic acid (1)-formamide (2)-1-butyl-3-methylimidazolium chloride (3)) the above mentioned stable solid compounds are formed and the corresponding melting temperature of these compounds decreased. Dissociation parameters were modelled thermodynamically for solid adducts.

Sign in / Sign up

Export Citation Format

Share Document