Limiting activity coefficient measurements in binary mixtures of dichloromethane and 1 alkanols (C1-C4)

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

Limiting activity coefficient measurements in binary mixtures of dichloromethane and 1 alkanols (C1-C4)

Original language description

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.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Fluid Phase Equilibria

ISSN

0378-3812

e-ISSN

—

Volume of the periodical

411

Issue of the periodical within the volume

March

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

7

Pages from-to

59-65

UT code for WoS article

000369465600008

EID of the result in the Scopus database

2-s2.0-84949819049