The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform
Isabel Fonseca - One of the best experts on this subject based on the ideXlab platform.
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densities and viscosities of the ternary mixtures water butyl acetate methanol and water Ethyl Propionate methanol at 303 15 k
Journal of Chemical & Engineering Data, 2000Co-Authors: Zoran P. Visak, And Abel G. M. Ferreira, Isabel FonsecaAbstract:The excess molar volumes, VE, and viscosity deviations, Δη, were calculated from the measured density and viscosity values over the whole miscibility composition ranges for the ternary systems water + butyl acetate + methanol and water + Ethyl Propionate + methanol and their constituent binaries, at 303.15 K and atmospheric pressure. A Redlich−Kister type equation was used to correlate binary VE and Δη data, as well as the ternary data. This equation was used to calculate the above referred properties along the binodal curve.
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Densities and Viscosities of the Ternary Mixtures Water + Butyl Acetate + Methanol and Water + Ethyl Propionate + Methanol at 303.15 K
Journal of Chemical & Engineering Data, 2000Co-Authors: Zoran P. Visak, And Abel G. M. Ferreira, Isabel FonsecaAbstract:The excess molar volumes, VE, and viscosity deviations, Δη, were calculated from the measured density and viscosity values over the whole miscibility composition ranges for the ternary systems water + butyl acetate + methanol and water + Ethyl Propionate + methanol and their constituent binaries, at 303.15 K and atmospheric pressure. A Redlich−Kister type equation was used to correlate binary VE and Δη data, as well as the ternary data. This equation was used to calculate the above referred properties along the binodal curve.
Zoran P. Visak - One of the best experts on this subject based on the ideXlab platform.
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densities and viscosities of the ternary mixtures water butyl acetate methanol and water Ethyl Propionate methanol at 303 15 k
Journal of Chemical & Engineering Data, 2000Co-Authors: Zoran P. Visak, And Abel G. M. Ferreira, Isabel FonsecaAbstract:The excess molar volumes, VE, and viscosity deviations, Δη, were calculated from the measured density and viscosity values over the whole miscibility composition ranges for the ternary systems water + butyl acetate + methanol and water + Ethyl Propionate + methanol and their constituent binaries, at 303.15 K and atmospheric pressure. A Redlich−Kister type equation was used to correlate binary VE and Δη data, as well as the ternary data. This equation was used to calculate the above referred properties along the binodal curve.
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Densities and Viscosities of the Ternary Mixtures Water + Butyl Acetate + Methanol and Water + Ethyl Propionate + Methanol at 303.15 K
Journal of Chemical & Engineering Data, 2000Co-Authors: Zoran P. Visak, And Abel G. M. Ferreira, Isabel FonsecaAbstract:The excess molar volumes, VE, and viscosity deviations, Δη, were calculated from the measured density and viscosity values over the whole miscibility composition ranges for the ternary systems water + butyl acetate + methanol and water + Ethyl Propionate + methanol and their constituent binaries, at 303.15 K and atmospheric pressure. A Redlich−Kister type equation was used to correlate binary VE and Δη data, as well as the ternary data. This equation was used to calculate the above referred properties along the binodal curve.
Juan Lanz - One of the best experts on this subject based on the ideXlab platform.
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density refractive index speed of sound and vapor liquid equilibria for binary mixtures of methanol Ethyl Propionate and vinyl acetate Ethyl Propionate
Journal of Chemical & Engineering Data, 2002Co-Authors: José M. Resa, Cristina González, And Salomé Ortiz De Landaluce, Juan LanzAbstract:Densities, refractive indices, and speeds of sound at 298.15 K, and isobaric vapor−liquid equilibria data at 101.3 kPa were reported for binary mixtures containing methanol + Ethyl Propionate and vinyl acetate + Ethyl Propionate. Excess molar volumes, refractive index deviations, and changes of speed of sound on mixing were calculated from the measured results and fitted to Redlich−Kister polynomials. VLE experimental data were tested for thermodynamic consistency by means of a modified Dechema test and were demonstrated to be consistent. The activity coefficients were correlated with the Margules, van Laar, UNIQUAC, NRTL, and Wilson equations with two suffixes and the Wilson model with three suffix equations. The ASOG model also was used for prediction. The methanol (1) + Ethyl Propionate (2) system shows an azeotrope at x1 = 0.984.
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Density, Refractive Index, Speed of Sound, and Vapor−Liquid Equilibria for Binary Mixtures of Methanol + Ethyl Propionate and Vinyl Acetate + Ethyl Propionate
Journal of Chemical & Engineering Data, 2002Co-Authors: José M. Resa, Cristina González, And Salomé Ortiz De Landaluce, Juan LanzAbstract:Densities, refractive indices, and speeds of sound at 298.15 K, and isobaric vapor−liquid equilibria data at 101.3 kPa were reported for binary mixtures containing methanol + Ethyl Propionate and vinyl acetate + Ethyl Propionate. Excess molar volumes, refractive index deviations, and changes of speed of sound on mixing were calculated from the measured results and fitted to Redlich−Kister polynomials. VLE experimental data were tested for thermodynamic consistency by means of a modified Dechema test and were demonstrated to be consistent. The activity coefficients were correlated with the Margules, van Laar, UNIQUAC, NRTL, and Wilson equations with two suffixes and the Wilson model with three suffix equations. The ASOG model also was used for prediction. The methanol (1) + Ethyl Propionate (2) system shows an azeotrope at x1 = 0.984.
Hervé Jeanmart - One of the best experts on this subject based on the ideXlab platform.
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Combustion Characteristics of Tricomponent Fuel Blends of Ethyl Acetate, Ethyl Propionate, and Ethyl Butyrate in Homogeneous Charge Compression Ignition (HCCI)
Energy & Fuels, 2011Co-Authors: Francesco Contino, Fabrice Foucher, Christine Mounaïm-rousselle, Hervé JeanmartAbstract:A mixture of Ethyl acetate (EtAc), Ethyl Propionate (WO, and Ethyl butyrate (EtBu) can be obtained from low value biomass wastes in a simple biochemical process that includes acidogenic fermentation. Their proportions in the mixture vary according to fermentation conditions and biomass feedstocks. To help direct the fermentation process, they have been previously analyzed separately in a homogeneous charge: compression ignition (HCCI) engine, but the characteristics of the mixtures are unknown. Using mixture design, we investigated how the tricomponent fuel blends of these esters impact the combustion characteristics in HCCI. This paper reports the ignition timing for 12 different blends. It characterizes the direct effect and the types of interaction using a blending model. The ignition timing is mainly determined by the proportion of EtAc and EtBu, with EtBu having a smaller ignition delay than EtAc. EtPr has no appreciable direct effect on this timing, but it has an antagonistic effect on EtAc and EtBu. The faster ignition of EtBu could help decrease the inlet temperature and, therefore, be more compatible with real engines. Moreover, dilution with EtPr could also reduce the effect of mixture variability. The successful implementation of these esters in HCCI may, however, require blending them with other fuels to further decrease the inlet temperature. This will remain the focus of future studies.
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Experimental Characterization of Ethyl Acetate, Ethyl Propionate, and Ethyl Butanoate in a Homogeneous Charge Compression Ignition Engine
Energy & Fuels, 2011Co-Authors: Francesco Contino, Fabrice Foucher, Christine Mounaïm-rousselle, Hervé JeanmartAbstract:The homogeneous charge compression ignition (HCCI) engine can be run on a large range of fuels if the appropriate operating conditions are chosen. This can improve the efficiency of biofuel production from low-value biomass by suppressing the need for the transformation process to obtain products that are compatible with spark ignition or compression ignition engines. A simple biochemical process that includes acidogenic fermentation and produces a mixture of various esters can take advantage of this flexibility. However, the behavior of this mixture under HCCI conditions needs to be characterized. It can also have a great impact on the HCCI operating limits and its successful implementation. Using an HCCI engine, we investigated how the operating limits are modified by the combustion characteristics of three of these esters: Ethyl acetate, Ethyl Propionate, and Ethyl butanoate. This paper reports the experimental results for each of these products and for ethanol taken as the reference fuel. It also analyzes their effects on the ignition timing and the combustion rate. For the selected operating conditions, stable HCCI operations on a large range of equivalence ratios were obtained for every fuel The difference in specific heats of the air/fuel mixtures and in the ignition kinetics both contributed to the ignition characteristics. Ethanol ignites earlier, which leads to a low upper limit, whereas the late ignition of Ethyl acetate shifts the operating zone upward due to smoothed high loads but unstable low loads. As a consequence, these low-grade products can be used in an HCCI engine. Fuel blends of these products may take advantage of the different combustion characteristics to extend the HCCI zone. Still, the range of this extension is difficult to estimate and the research of the optimal fuel blend composition will, therefore, remain the focus of future work.
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Combustion Characteristics of Tricomponent Fuel Blends of Ethyl Acetate, Ethyl Propionate, and Ethyl Butyrate in Homogeneous Charge Compression Ignition (HCCI)
Energy and Fuels, 2011Co-Authors: Francesco Contino, Fabrice Foucher, Christine Mounaïm-rousselle, Hervé JeanmartAbstract:A mixture of Ethyl acetate (EtAc), Ethyl Propionate (EtPr), and Ethyl butyrate (EtBu) can be obtained from low-value biomass wastes in a simple biochemical process that includes acidogenic fermentation. Their proportions in the mixture vary according to fermentation conditions and biomass feedstocks. To help direct the fermentation process, they have been previously analyzed separately in a homogeneous charge compression ignition (HCCI) engine, but the characteristics of the mixtures are unknown. Using mixture design, we investigated how the tricomponent fuel blends of these esters impact the combustion characteristics in HCCI. This paper reports the ignition timing for 12 different blends. It characterizes the direct effect and the types of interaction using a blending model. The ignition timing is mainly determined by the proportion of EtAc and EtBu, with EtBu having a smaller ignition delay than EtAc. EtPr has no appreciable direct effect on this timing, but it has an antagonistic effect on EtAc and EtBu. The faster ignition of EtBu could help decrease the inlet temperature and, therefore, be more compatible with real engines. Moreover, dilution with EtPr could also reduce the effect of mixture variability. The successful implementation of these esters in HCCI may, however, require blending them with other fuels to further decrease the inlet temperature. This will remain the focus of future studies.
And Abel G. M. Ferreira - One of the best experts on this subject based on the ideXlab platform.
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densities and viscosities of the ternary mixtures water butyl acetate methanol and water Ethyl Propionate methanol at 303 15 k
Journal of Chemical & Engineering Data, 2000Co-Authors: Zoran P. Visak, And Abel G. M. Ferreira, Isabel FonsecaAbstract:The excess molar volumes, VE, and viscosity deviations, Δη, were calculated from the measured density and viscosity values over the whole miscibility composition ranges for the ternary systems water + butyl acetate + methanol and water + Ethyl Propionate + methanol and their constituent binaries, at 303.15 K and atmospheric pressure. A Redlich−Kister type equation was used to correlate binary VE and Δη data, as well as the ternary data. This equation was used to calculate the above referred properties along the binodal curve.
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Densities and Viscosities of the Ternary Mixtures Water + Butyl Acetate + Methanol and Water + Ethyl Propionate + Methanol at 303.15 K
Journal of Chemical & Engineering Data, 2000Co-Authors: Zoran P. Visak, And Abel G. M. Ferreira, Isabel FonsecaAbstract:The excess molar volumes, VE, and viscosity deviations, Δη, were calculated from the measured density and viscosity values over the whole miscibility composition ranges for the ternary systems water + butyl acetate + methanol and water + Ethyl Propionate + methanol and their constituent binaries, at 303.15 K and atmospheric pressure. A Redlich−Kister type equation was used to correlate binary VE and Δη data, as well as the ternary data. This equation was used to calculate the above referred properties along the binodal curve.