Surface tensions of biodiesel blends with pentanol and octanol isomers at different conditions: measurement and new correlation

Vargas-Ibáñez, Leidy T.; Cano-Gómez, José J.; Santos‐López, Iván A.; Iglesias‐Silva, Gustavo A.; López-Lázaro, José de los S.; Alcalá-Rodríguez, M.M.; Villarreal-Mendoza, Carolina; Armendáriz-Ovalle, Carolina

doi:10.1016/j.fluid.2021.113046

Cited by 9 publications

(4 citation statements)

References 65 publications

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“…The experimental values for the surface tension of pure components at working temperatures and atmospheric pressure are collected in Table . The surface tension values for the pure compounds found in the literature − are also included in this table. In general, the accordance between the experimental and literature data is good, particularly for the case of alcohols.…”

Section: Resultsmentioning

confidence: 99%

Surface and Calorimetric Behavior of N,N-Dimethylacetamide with n-Alkanols or 2-Alkanols

et al. 2022

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The surface tension at the liquid−air interface of eight binary mixtures formed by N,N-dimethylacetamide and n-alkanols (from methanol to 1-pentanol) or 2-alkanols (from 2-propanol to 2-pentanol) was studied at three different temperatures (283.15, 298.15, and 313.15 K) and a pressure of 0.1 MPa. Surface tension deviations were also calculated. Moreover, the excess molar enthalpies for all of these mixtures were measured at T = 298.15 K and a pressure of 0.1 MPa. Both deviation and excess functions were correlated with the mole fraction by means of the Redlich−Kister equation. The surface tension deviations are found to be positive for the system containing methanol, sigmoidal for ethanol and negative for the rest of the alkanols. With regard to excess molar enthalpies, negative values are found for the system containing methanol, sigmoidal values for ethanol, and positive values for the rest of the alkanols.

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Section: Resultsmentioning

confidence: 99%

Surface and Calorimetric Behavior of N,N-Dimethylacetamide with n-Alkanols or 2-Alkanols

et al. 2022

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“…1,3−8 In the literature, it has been reported that the use of alcohols as additives decreases the density, viscosity, and surface tension values of biodiesel + alcohol or bio-jet fuel + alcohol mixtures, decreasing the differences between the physicochemical properties of the new alternative fuel and the conventional fossil fuel. 4,5,8 Likewise, mixtures of long-chain alcohols (C 4 − C 8 ) have been proposed as a new alternative fuel to fossil fuel. 9−11 Therefore, densities and viscosities are required for the design of the fuel tank, fuel feed pump, injection pump, filter, fuel injector, and high-pressure pipe.…”

Section: Introductionmentioning

confidence: 99%

“…Alcohols have two primary applications: (i) they are used an industrial solvent, mainly for the manufacture of paints, hydraulic fluids, perfumes, and lacquers, and (ii) they are used as biofuel additives . Recently, long-chain alcohols ( n - or i -C 4 –C 8 ) have been implemented as new additives for biodiesel and bio-jet fuel. ,− In the literature, it has been reported that the use of alcohols as additives decreases the density, viscosity, and surface tension values of biodiesel + alcohol or bio-jet fuel + alcohol mixtures, decreasing the differences between the physicochemical properties of the new alternative fuel and the conventional fossil fuel. ,, Likewise, mixtures of long-chain alcohols (C 4 –C 8 ) have been proposed as a new alternative fuel to fossil fuel. − Therefore, densities and viscosities are required for the design of the fuel tank, fuel feed pump, injection pump, filter, fuel injector, and high-pressure pipe. Density impacts the injection system remarkably, mainly caused by the differences in the volume of fuel supplied to the engines.…”

Section: Introductionmentioning

confidence: 99%

Densities, Viscosities, and Derived Properties for Binary Mixtures of Long-Chain Alcohols of 1-Hexanol + 1-Pentanol, + 2-Pentanol, + 2-Methyl-1-butanol, + 1-Heptanol, and + 1-Octanol from 288.15 to 338.15 K

et al. 2023

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Densities and viscosities for binary mixtures of longchain alcohols are important to design transfer heat and mass equipment and to interpret the kind of interactions that occur in the studied blends. Current investigation indicated the measurements of densities and viscosities for liquid mixtures of 1-hexanol + 1-pentanol, + 2-pentanol, + 2-methyl-1-butanol, + 1-heptanol, and + 1-octanol from 288.15 to 338.15 K at atmospheric pressure and over the whole range of mole fractions. A vibrating tube densimeter and a glass capillary viscometer were used to measure the density and viscosity of the alcohol binary mixtures, respectively. Experimental measurements of the pure alcohols have been compared with the data reported in the literature using average absolute percentage deviation (AAPD) as a criterion. The obtained results demonstrated for density an AAPD of 0.023% and for viscosity an AAPD of 0.597%, which is a good agreement between the experimental findings and literature data. Excess molar volume and viscosity deviation present negative deviations for all the alcohol mixtures at the conditions considered in this research. These results indicate that the mixture suffers a volume contraction, which is caused by intermolecular forces of attraction between different alcohol molecules. The Redlich−Kister equation is used to fit the excess molar volume and viscosity deviation. Kinematic viscosities of the binary blends have been calculated through the Nava-Ri ́os et al. and McAllister equations.

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“…The knowledge of densities and viscosities is essential for the design of the fuel injection system components and the evaluation of the fuel spray characteristics in a combustion chamber . Also, the availability of these two physical properties allows the evaluation of excess molar volumes and derived properties essential to elucidate the type of interactions present in the mixture − and to develop predictive models. Accurate refractive index data allows to confirm the purity of fuel mixtures.…”

Section: Introductionmentioning

confidence: 99%

Thermophysical Properties of Biodiesel with Ethyl Levulinate, Ethyl Acetoacetate, and Ethyl Pyruvate + MgO Mixtures from 288.15 to 338.15 K

et al. 2022

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Thermophysical properties are important to design the fuel system components and to evaluate new alternative fuels in diesel engine tests. Also, experimental properties allow us to understand the type of interactions present in the studied mixtures. Densities, viscosities, and refractive indices of biodiesel + ethyl levulinate, + ethyl acetoacetate, and + ethyl pyruvate with MgO mixtures have been measured from 288.15 to 338.15 K at 0.1 MPa over the whole composition range and at a constant concentration of 5 × 10 −6 in mass fraction for MgO. Our experimental properties for the pure ketoesters agree with data reported in the literature within an average absolute percentage deviation of 0.056, 3.140, and 0.027 % for density, viscosity, and refractive index, respectively. Vibrating tube densimeter, glass capillary viscosimeter, and Abbemat refractometer have been used to measure the properties. Densities and viscosities of the biodiesel mixtures have been compared with the biodiesel fuel standard EN 14214. Flash point, cetane index, and calorific value of the biodiesel mixtures that meet the EN 14214 norm have been measured. Excess molar volume, viscosity deviation, and refractive index deviation are obtained from experimental data and correlated using the Redlich−Kister equation. Equations reported in the literature are used to correlate the thermophysical properties of the investigated mixtures.

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Surface tensions of biodiesel blends with pentanol and octanol isomers at different conditions: measurement and new correlation

Cited by 9 publications

References 65 publications

Surface and Calorimetric Behavior of N,N-Dimethylacetamide with n-Alkanols or 2-Alkanols

Surface and Calorimetric Behavior of N,N-Dimethylacetamide with n-Alkanols or 2-Alkanols

Densities, Viscosities, and Derived Properties for Binary Mixtures of Long-Chain Alcohols of 1-Hexanol + 1-Pentanol, + 2-Pentanol, + 2-Methyl-1-butanol, + 1-Heptanol, and + 1-Octanol from 288.15 to 338.15 K

Thermophysical Properties of Biodiesel with Ethyl Levulinate, Ethyl Acetoacetate, and Ethyl Pyruvate + MgO Mixtures from 288.15 to 338.15 K

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