Browsing Faculty of Natural and Agricultural Sciences by Subject "Density"
Now showing items 1-10 of 10
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Cibulka correlation for ternary excess/deviation properties of C2mim EtSO4 (x1) + acetic or propionic acid (x2) + acetonitrile (x3) systems at different temperatures
(Elsevier, 2017)In this perspective, the main intention is to reveal the possible intra and inter molecular interactions between ternary ionic liquid systems. The excess molar volume (VE123), isentropic compressibility (ks) and deviation ... -
Effect of temperature on density, sound velocity, and their derived properties for the binary systems glycerol with water or alcohols
(Elsevier, 2017)Densities and sound velocities of three binary systems containing glycerol + (water, methanol, or ethanol) have been measured over the entire composition range at temperatures ranging from (283.15 to 313.15) K in 10 K ... -
Influence of alkyl group on interactions between carboxylic acid and acetonitrile at different temperatures
(Elsevier, 2016)In this paper, the influence of alkyl group as well as temperature on interactions between carboxylic acid and acetonitrile were examined using thermodynamics technique. The carboxylic acid used in this study was acetic ... -
Intermolecular interactions between 2-methyl-2-butanol and petroleum ether at different temperatures: density, viscosity and refractive index measurements
(Elsevier, 2016)Experimental data of densities, dynamic viscosities, at 293.15, and 303.15 K as well as refractive indices at 293.15, 303.15, 313.15 and 323.15 K were measured for the binary systems of 2-methyl-2-butanol and petroleum ... -
Physicochemical properties of N-Butyl-N-methyl-2-oxopyrrolidonium bromide and its binary mixtures with water or methanol
(American Chemical Society, 2016)Novel N-butyl-N-methyl-2-oxopyrrolidonium bromide ([BMpyr]+[Br]?) ionic liquid was synthesized and characterized by different techniques such as NMR (1H and 13C), FTIR, and HPLC. The measurements of thermophysical properties ... -
Synthesis, characterization and thermophysical properties of ionic liquid N-methyl-N-(2′,3′-epoxypropyl)-2-oxopyrrolidinium chloride and its binary mixtures with water or ethanol at different temperatures
(Elsevier, 2016)A novel ionic liquid, namely, N-methyl-N-(2′,3′-epoxypropyl)-2-oxopyrrolidiniumchloride [Epmpyr]+[Cl]− was synthesized and characterized by different techniques such as NMR (1H and 13C), FTIR, and elemental analysis. The ... -
Thermophysical approach to understand the nature of molecular interactions and structural factor between methyl isobutyl ketone and organic solvents mixtures
(Elsevier, 2017)In this paper, we report the new experimental values of densities, speeds of sound, and refractive indices for four binary mixtures: {methyl isobutyl ketone (MIBK) + dimethyl sulfoxide (DMSO) or acetone or acetonitrile, ... -
Towards more compact South African settlements through informal housing: the case of backyard densification in Bridgton and Bongolethu, Oudtshoorn
(UOVS. Dept of Town and Regional Planning, 2016)This article engages the concepts of urban sprawl and density, as the foundations for a discussion on South Africa’s informal backyard rental sector. This research attempts to relate some of the spatial impacts levied ... -
Vapor-liquid equilibria, density and sound velocity measurements of (water or methanol or ethanol + 1,3-propanediol) binary systems at different temperatures
(Elsevier, 2016)In this work, vapor liquid equilibria (VLE) data for the binary systems containing {water or methanol (1) + 1,3-propanediol (2)} are reported. All measurements were performed in the temperature range of (273.15-343.15 (or ... -
Volumetric and acoustic properties of binary systems (furfural or furfuryl alcohol + toluene) and (furfuryl alcohol + ethanol) at different temperatures
(Elsevier Science Bv, 2015)Densities (?) and sound velocities (u) of the pure liquids obtained from different biomass conversion: furfural, furfuryl alcohol, toluene, and ethanol were measured at temperature range from 283.15 K to 313.15 K at 10 K ...