Temperature dependence of excess molar volumes in (n-alkane (C6–C9) or alcohol (C2–C4))+olive oil mixtures

González, Cristina; Iglesias, M.; Lanz, Juan José; Resa, José M.

doi:10.1016/s0040-6031(98)00653-4

Cited by 54 publications

(35 citation statements)

References 14 publications

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“…As was reported in previous studies [1][2][3][4], this kind of mixture shows phase splitting for molecules with high activated hydroxyl groups, due to the steric hindrance. In fact, three mixtures (soybean oil + methanol, ethanol, or 2-propanol) show inmiscibility at high concentrations of the solvent.…”

Section: Data Correlationsupporting

confidence: 76%

“…Molecular sieve (3Å) was used to dehydrate the alcohols. The general procedure for handling the chemicals manipulation and the experimental techniques applied in our laboratory are discussed in a previous paper [1]. The soybean oil was supplied by Moyresa and analyzed by means of a gas chromatograph (Shimadzu GC-14B) equipped with a flame detector.…”

Section: Methodsmentioning

confidence: 99%

“…Thus, in the last few years considerable effort has been applied in the field of thermodynamic properties of oils and mixtures with different solvents related to process technology. Such properties are strongly dependent 1 Dpto. de Ingenieria Química, Universidad del Pais Vasco, Apdo.…”

Section: Introductionmentioning

confidence: 99%

“…It is not always possible to obtain reliable values, specially when concerned with mixtures at non-standard conditions. In the scope of investigating the physical properties related to equipment design in the natural oils industry and new environmental friendly procedures of extraction and refining such as modified distillation or wintering, we present as a continuation of previous studies [1][2][3][4] the temperature dependence of the density and refractive index of short aliphatic alcohols (methanol, ethanol, 1-propanol, 2-propanol, 1-butanol) + natural soybean oil over the range from 283.15 to 298.15 K at atmospheric pressure, as a function of molar fraction. From the experimental values, derived properties were computed, using a temperature-dependent Redlich-Kister type polynomial.…”

Section: Introductionmentioning

confidence: 99%

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Measurements of Density and Refractive Index of Soybean Oil + Short Aliphatic Alcohols

et al. 2006

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Densities and refractive indices of binary mixtures containing soybean oil + (methanol, ethanol, 1-propanol, 2-propanol, or 1-butanol) have been measured from 283.15 to 298.15 K at atmospheric pressure, over the complete homogeneous composition range. Derived properties, such as excess molar volumes, partial excess molar volumes, and excess isobaric compressibilities, have been determined. Values of physical properties were compared with the results obtained by different prediction methods; the results were analyzed according to the non-ideality and large differences of molecular characteristics of the compounds included in this study.

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Section: Data Correlationsupporting

confidence: 76%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Measurements of Density and Refractive Index of Soybean Oil + Short Aliphatic Alcohols

et al. 2006

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“…Calibration of the apparatus was performed periodically, in accordance with technical specifications, using Millipore quality water (resistivity, 18.2 M cm) and ambient air. More details about techniques and procedure in our laboratory could be obtained from previous papers [7,8]. The measured properties of the pure compounds, as well as open literature data are reported in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Influence of Temperature on Thermodynamic Properties of Methyl t-Butyl Ether (MTBE) + Gasoline Additives

et al. 2007

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The densities and sound speeds of binary mixtures of methyl tert-butyl ether (MTBE) + (benzene, toluene, ethylbenzene, isooctane, tert-butyl alcohol) have been measured at temperatures from 288.15 to 323.15 K and at atmospheric pressure over the complete concentration range. The experimental excess volumes and deviations of isentropic compressibility were calculated. The deviation of isentropic compressibility data have been analyzed in terms of different theoretical models; adequate agreement between the experimental and predicted values is obtained. The data from this study improve the data situation related to gasoline additives and help to understand the MTBE volumetric and acoustic behavior for various chemical systems.

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Physicochemical Properties of Mixtures of Morama Seed Oil With Alkanols and Alkyl Acetates at 298.15 K Atmospheric Pressure

Yeboah

Oathotse

Ddamba

2018

J Americ Oil Chem Soc

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Densities, ρ, ultrasonic speed, u, and dynamic viscosities, η, of mixtures of morama, Tylosema esculentum, seed oil with 1-propanol, 1-butanol, methyl acetate, and ethyl acetate were determined over the entire composition range at 298.15 K and atmospheric pressure. Excess molar volumes, V E m , excess molar-free volumes V E f , deviations in isentropic compressibility, Δκ s , deviations in ultrasonic speed, Δu, deviations in dynamic viscosity, Δη, and the excess free energy of activation of viscous flow, ΔG* E , were calculated and correlated using the Redlich-Kister equation for each of the (morama seed oil + 1-propanol or 1-butanol or methyl acetate or ethyl acetate) mixtures. The results obtained were discussed in terms of possible dipole-dipole intermolecular interactions and structural effects.

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Temperature dependence of excess molar volumes in (n-alkane (C6–C9) or alcohol (C2–C4))+olive oil mixtures

Cited by 54 publications

References 14 publications

Measurements of Density and Refractive Index of Soybean Oil + Short Aliphatic Alcohols

Measurements of Density and Refractive Index of Soybean Oil + Short Aliphatic Alcohols

Influence of Temperature on Thermodynamic Properties of Methyl t-Butyl Ether (MTBE) + Gasoline Additives

Physicochemical Properties of Mixtures of Morama Seed Oil With Alkanols and Alkyl Acetates at 298.15 K Atmospheric Pressure

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