Refractive index, molar refraction deviation and excess molar volume of binary mixtures of 1,4-dioxane with carboxylic acids

The thermophysical properties of the binary mixtures containing biofuel components derived from biomass were determined. Experimental densities, speed of sound, and refractive indices for the binary mixtures (methanol or 1-ethyl-3-methylimidazolium acetate [EMIM][OAc] + furfural or furfuryl alcohol ) were measured at T = (298.15, 303.15, 308.15, 313.15 and 318.15) K. From the experimental data, excess molar volume, E m V , isentropic compressibility, s  , molar refractions, R, and deviation in refractive index, Δn, were calculated. The excess molar volumes were found to be negative for all systems studied. The isentropic compressibility were found to be both positive for the whole composition and temperature range and increases slightly with increasing temperature. The deviation in refractive index was positive over the whole composition range. The obtained values of excess molar volumes and changes of refractive index on mixing were satisfactorily correlated by the Redlich–Kister equation. The Lorentz–Lorenz equation was applied to predict the density and calculate the excess molar volume of the binary mixtures.

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Excess molar volume, excess isentropic compressibility and excess molar refraction of binary mixtures of methyl acetoacetate with benzene, toluene, m-xylene, mesitylene and anisole

Fluid Phase Equilibria ◽

10.1016/0378-3812(92)85007-u ◽

1992 ◽

Vol 71 (1-2) ◽

pp. 99-112 ◽

Cited By ~ 21

Author(s):

M.I. Aralaguppi ◽

T.M. Aminabhavi ◽

R.H. Balundgi

Keyword(s):

Molar Volume ◽

Binary Mixtures ◽

Excess Molar Volume ◽

Isentropic Compressibility ◽

Molar Refraction ◽

Methyl Acetoacetate ◽

Benzene Toluene ◽

Excess Isentropic Compressibility

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EXCESS MOLAR VOLUME, VISCOSITY AND REFRACTIVE INDEX DEVIATIONS FOR MIXTURES OF FORMAMIDE + SOME CARBOXYLIC ACIDS AT SEVERAL TEMPERATURES

Physics and Chemistry of Liquids ◽

10.1080/031910031000155434 ◽

2003 ◽

Vol 41 (5) ◽

pp. 503-508

Author(s):

ALICIA CASES ◽

ANA GOMEZ MARIGLIANO ◽

HORACIO SOLIMO

Keyword(s):

Refractive Index ◽

Molar Volume ◽

Carboxylic Acids ◽

Excess Molar Volume ◽

Volume Viscosity ◽

Refractive Index Deviations

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Optical Properties, Excess Volume Prediction from Refractive Index and Intermolecular Interactions in Dibutylamine + Isomeric Butanol

Asian Journal of Chemistry ◽

10.14233/ajchem.2021.23000 ◽

2021 ◽

Vol 33 (6) ◽

pp. 1287-1293

Author(s):

Kavitha Kumari ◽

Sanjeev Maken

Keyword(s):

Refractive Index ◽

Optical Properties ◽

Standard Deviation ◽

Molar Volume ◽

Binary Mixtures ◽

Co2 Capture ◽

Thermophysical Properties ◽

Excess Molar Volume ◽

Excess Volume ◽

Refractive Index Data

The alkyl or alkanol amines are widely used as absorbent for CO2 capture owing to interaction between amines and CO2. In order to increase the CO2 loading in amine based absorbents, blending of amine with alkanol may be one option. As thermophysical properties of of utmost importance in designing, in present work, the refractive index of dibutylamine (DBA) and isomeric butanol as well as their binary mixtures at 298.15 K to 308.15 K were measured. The Δn are found positive for DBA + isomeric butanol mixtures. The Δn values were correlated with Redlich-Kister polynomial. The refractive index data were also predicted by various correlations and results were expressed in terms of standard deviation. The Δn values were also employed to calculate the excess molar volume of the present binary mixtures. Further Δn data analysed in terms of intermolecular interaction among DBA (1) + isomeric butanol (2) mixtures.

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