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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