Limiting activity coefficient measurements in binary mixtures of dichloromethane and 1 alkanols (C1-C4)
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F16%3A43902410" target="_blank" >RIV/60461373:22340/16:43902410 - isvavai.cz</a>
Výsledek na webu
<a href="http://www.sciencedirect.com/science/article/pii/S0378381215302429" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0378381215302429</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.fluid.2015.11.037" target="_blank" >10.1016/j.fluid.2015.11.037</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Limiting activity coefficient measurements in binary mixtures of dichloromethane and 1 alkanols (C1-C4)
Popis výsledku v původním jazyce
Limiting activity coefficients in binary mixtures of dichloromethane with four lower 1 alkanols (C1-C4) were experimentally determined employing alternatively the techniques of inert gas stripping, comparative ebulliometry, Rayleigh distillation, and differential distillation. For each case, the suitable technique was chosen on the basis of the limiting relative volatility of the solute and/or volatility of the solvent. The measurements yielding data of good accuracy (relative standard uncertainty of limiting activity coefficients from 0.01 to 0.03) were carried out at several temperatures in the range from (283 to 333) K. The variation of limiting activity coefficients with temperature was fitted by a suitable two- or three-parameter equation and compared with available literature information on both limiting activity coefficients and calorimetric partial molar excess enthalpies at infinite dilution. The performance of the leading prediction method Modified UNIFAC was further examined using these new data. Concentration dependences of activity coefficients calculated from their infinite dilution values using van Laar equation were found to agree well with those inferred from reliable VLE data from the literature. The occurrence of an azeotropic point was tested for the systems under study and the temperature dependence of the azeotropic point composition was estimated for mixtures of dichloromethane with methanol and ethanol.
Název v anglickém jazyce
Limiting activity coefficient measurements in binary mixtures of dichloromethane and 1 alkanols (C1-C4)
Popis výsledku anglicky
Limiting activity coefficients in binary mixtures of dichloromethane with four lower 1 alkanols (C1-C4) were experimentally determined employing alternatively the techniques of inert gas stripping, comparative ebulliometry, Rayleigh distillation, and differential distillation. For each case, the suitable technique was chosen on the basis of the limiting relative volatility of the solute and/or volatility of the solvent. The measurements yielding data of good accuracy (relative standard uncertainty of limiting activity coefficients from 0.01 to 0.03) were carried out at several temperatures in the range from (283 to 333) K. The variation of limiting activity coefficients with temperature was fitted by a suitable two- or three-parameter equation and compared with available literature information on both limiting activity coefficients and calorimetric partial molar excess enthalpies at infinite dilution. The performance of the leading prediction method Modified UNIFAC was further examined using these new data. Concentration dependences of activity coefficients calculated from their infinite dilution values using van Laar equation were found to agree well with those inferred from reliable VLE data from the literature. The occurrence of an azeotropic point was tested for the systems under study and the temperature dependence of the azeotropic point composition was estimated for mixtures of dichloromethane with methanol and ethanol.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
CF - Fyzikální chemie a teoretická chemie
OECD FORD obor
—
Návaznosti výsledku
Projekt
—
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2016
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Fluid Phase Equilibria
ISSN
0378-3812
e-ISSN
—
Svazek periodika
411
Číslo periodika v rámci svazku
March
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
7
Strana od-do
59-65
Kód UT WoS článku
000369465600008
EID výsledku v databázi Scopus
2-s2.0-84949819049