Vapor–liquid critical properties of components of biodiesel. 2. Ethyl esters of n -alkanoic acids

Nikitin, Eugene D.; Popov, Alexander P.

doi:10.1016/j.fuel.2015.11.021

Cited by 32 publications

(17 citation statements)

References 52 publications

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“…With the help of the heavily updated densities and speeds of sound of saturated fatty acid esters in the literature, a modified Jacobson’s model was proposed for calculating the intermolecular free length of biodiesel. The available literature reports ,− ,,− on critical temperature, density, and speed of sound for 11 saturated fatty acid esters (methyl caproate, methyl caprylate, methyl caprate, methyl laurate, methyl myristate, ethyl butyrate, ethyl caproate, ethyl caprylate, ethyl caprate, ethyl laurate and ethyl myristate) are listed in Table . These literature data were used to calculate the intermolecular free length and isentropic compressibility within the temperature limits of 293.15–343.15 K by definition.…”

Section: Results and Discussionmentioning

confidence: 99%

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Speed of Sound and Derivative Properties of Ethyl Laurate from Rayleigh–Brillouin Light-Scattering Spectroscopy

Zhan

Chen

et al. 2020

J. Chem. Eng. Data

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The experimental speeds of sound combined with Brillouin frequency shifts of ethyl laurate at temperatures from 294.97 to 572.89 K along six isobaric lines from 0.1 to 10.0 MPa were measured by Rayleigh–Brillouin light-scattering spectroscopy. The expanded relative uncertainty in the reported speeds of sound in ethyl laurate is estimated to be 1.3% (coverage factor k = 2 with a confidence level of 0.95). Within the temperature limits of 303.15–383.15 K and at pressures up to 10.0 MPa, the derived thermoacoustic properties of ethyl laurate including density, specific isobaric heat capacity, isentropic compressibility, isobaric thermal expansivity, isothermal compressibility, the difference in isobaric and isochoric heat capacity, internal pressure, and intermolecular free length were studied. Because of the heavily updated data of density and the speed of sound in the literature, a modified Jacobson’s model for biodiesels was proposed over the temperature range from 293.15 to 343.15 K, which is able to calculate the intermolecular free length of ethyl laurate with higher accuracy compared with Jacobson’s model.

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Section: Results and Discussionmentioning

confidence: 99%

“…Materials. The ethyl laurate sample details including CAS registry numbers, critical temperature, 34 mass fraction purity, and supplier are listed in Table 2. The ethyl laurate specimen was placed in a tightly sealed opaque bottle to avoid the absorption of moisture.…”

Section: Methodsmentioning

confidence: 99%

Speed of Sound and Derivative Properties of Ethyl Laurate from Rayleigh–Brillouin Light-Scattering Spectroscopy

Zhan

Chen

et al. 2020

J. Chem. Eng. Data

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“…In the process of application, biodiesel can be used while mixing with fossil diesel in an appropriate proportion . The main components of biodiesel are fatty acid methyl esters (FAMEs) and fatty acid ethyl ester(FAEEs), and the main compounds of diesel oil are alkanes. − In the last decades, many researchers focused their research on the mixtures of biodiesel and fossil diesel. The thermophysical parameters of these mixtures play a significant role in the optimization and evaluation of traditional diesel engines and the combustion injection system.…”

Section: Introductionmentioning

confidence: 99%

Experiment Investigation on the Liquid Thermal Conductivity of Biodiesel + Diesel Fuel Blends

et al. 2021

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Recently, biodiesel has received tremendous attention from a lot of scientists as a biodegradable, renewable, and high-potential fuel, which could be used directly or blended with diesel in internal combustion engines. The adequate thermophysics properties of fuel are required to model the process of fuel spray, atomization, and combustion accurately. In this work, five fuel blends containing methyl myristate and n-alkane (N-decane, N-undecane, N-dodecane, N-tridecane, and N-tetradecane) were prepared, and an important transport propertyliquid thermal conductivitywas measured through an experimental system constructed based on transient hot-wire theory. The measurement was conducted at temperatures ranging from 292 to 362 K under a pressure of 0.1 MPa with the weight fraction of methyl myristate being nearly 0.2000, 0.4000, 0.6000, and 0.8000 (by weight) in the binary mixtures. Furthermore, the relationship between the experiment results and temperature and mass fraction of methyl myristate was correlated as a polynomial function. The uncertainty of the experiment system is smaller than ±2.0%.

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“…Compared with petroleum-based fuels, it is low in monoxide (CO) and high in cetane count. Then, the use of biodiesel is able to lower greenhouse gas emissions. − Third, properties of the biodiesel including higher flash points, combustion heat, and kinematic viscosity in comparison to fossil diesel facilitate the use of biodiesel, which also blends in traditional diesel engines with no substantial adjustments. − However, compared with fossil diesel, drawbacks of biodiesel that limit its application include high viscosity, poor property at low temperature, and signs of instability when stored for long time. Adding additives is effective in negating these weaknesses, and the blend of additives including 1-propanol, 1-butanol, and 1-pentanol with diesel has often been studied. − …”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is imperative to study fuels’ thermophysical properties comprehensively. Lately, many investigators shifted their research interest to pure FAMEs or FAEEs’ thermophysical properties or mixtures contained in them. ,,− Nevertheless, no sufficient reported literature on biodiesel components mixtures’ thermal conductivity has been found. As a vital thermophysical property, thermal conductivity is required for the thermal design and optimization of a diesel engine. , In this work, the thermal conductivity of three binary mixtures was measured in the temperature between 292 and 362 K at atmospheric pressure.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on the Thermal Conductivity of Binary Mixtures with a Biodiesel Compound Ethyl Laurate + Three Alcohols (1-Propanol, 1-Butanol, and 1-Pentanol)

2020

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Biodiesel is recognized as a powerful substitute for diesel fuel. The alcohol can be blended with diesel or biodiesel for certain property improvements. In this research, the liquid thermal conductivity of binary mixtures containing ethyl laurate, typically the important biodiesel component + three alcohols (1-propanol, 1-butanol, and 1-pentanol), was measured in the temperature range between 292 and 362 K at atmospheric pressure. It is estimated that the experimental results’ overall standard uncertainty was no more than 2%; the repeatability was less than ±0.5%. From the experimental data of three binary mixtures, three correlations have been fitted and optimized as they are available in calculating the mixtures’ liquid thermal conductivity.

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Vapor–liquid critical properties of components of biodiesel. 2. Ethyl esters of n -alkanoic acids

Cited by 32 publications

References 52 publications

Speed of Sound and Derivative Properties of Ethyl Laurate from Rayleigh–Brillouin Light-Scattering Spectroscopy

Speed of Sound and Derivative Properties of Ethyl Laurate from Rayleigh–Brillouin Light-Scattering Spectroscopy

Experiment Investigation on the Liquid Thermal Conductivity of Biodiesel + Diesel Fuel Blends

Experimental Research on the Thermal Conductivity of Binary Mixtures with a Biodiesel Compound Ethyl Laurate + Three Alcohols (1-Propanol, 1-Butanol, and 1-Pentanol)

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