The Experts below are selected from a list of 2622 Experts worldwide ranked by ideXlab platform
Kraemer D. Luks - One of the best experts on this subject based on the ideXlab platform.
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Partial miscibility behavior of the ternary mixture carbon dioxide + 1-Methylnaphthalene + acetone
Fluid Phase Equilibria, 2002Co-Authors: Lydia E Gutiérrez M, Kraemer D. LuksAbstract:Abstract The liquid–liquid–vapor (llg) partial miscibility behavior of the mixture carbon dioxide+1-Methylnaphthalene+acetone was experimentally studied by the use of a visual cell (stoichiometric) technique. Phase compositions and molar volumes of the two liquid phases in equilibrium are reported as functions of temperature and pressure within the llg region. The addition of the co-solvent acetone extends the three-phase llg region in pressure–temperature space from the binary carbon dioxide+n-1-Methylnaphthalene llg locus downward in pressure, towards the vapor pressure curve of the co-solvent acetone. The three-phase region is bounded from above by an upper critical end point (UCEP) (l-l=g) locus. The presence of the co-solvent acetone significantly enhances the amount of the solute 1-Methylnaphthalene taken up by the second (carbon-dioxide-rich) liquid phase.
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Three-Phase Liquid−Liquid−Vapor Equilibria of the Binary Mixture Carbon Dioxide + 1-Methylnaphthalene
Journal of Chemical & Engineering Data, 2001Co-Authors: Lydia E. Gutiérrez M. And, Kraemer D. LuksAbstract:The liquid−liquid−vapor (llg) partial miscibility behavior of the mixture carbon dioxide + 1-Methylnaphthalene was experimentally studied by use of a visual cell (stoichiometric) technique. Pressur...
Yuan Chin Hsu - One of the best experts on this subject based on the ideXlab platform.
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Energy transfer of highly vibrationally excited 2-methylnaphthalene: Methylation effects.
The Journal of chemical physics, 2008Co-Authors: Hsu Chen Hsu, Chenlin Liu, Yuan Chin HsuAbstract:The methylation effects in the energy transfer between Kr atoms and highly vibrationally excited 2-methylnaphthalene in the triplet state were investigated using crossed-beam/time-sliced velocity-map ion imaging at a translational collision energy of ∼520cm−1. Comparison of the energy transfer between naphthalene and 2-methylnaphthalene shows that the difference in total collisional cross section and the difference in energy transfer probability density functions are small. The ratio of the total cross sections is σ(naphthalene): σ(methylnaphthalene)=1.08±0.05:1. The energy transfer probability density function shows that naphthalene has a little larger probability at small T→V∕R energy transfer, ΔEu
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energy transfer of highly vibrationally excited 2 methylnaphthalene methylation effects
Journal of Chemical Physics, 2008Co-Authors: Hsu Chen Hsu, Chenlin Liu, Yuan Chin HsuAbstract:The methylation effects in the energy transfer between Kr atoms and highly vibrationally excited 2-methylnaphthalene in the triplet state were investigated using crossed-beam/time-sliced velocity-map ion imaging at a translational collision energy of ∼520cm−1. Comparison of the energy transfer between naphthalene and 2-methylnaphthalene shows that the difference in total collisional cross section and the difference in energy transfer probability density functions are small. The ratio of the total cross sections is σ(naphthalene): σ(methylnaphthalene)=1.08±0.05:1. The energy transfer probability density function shows that naphthalene has a little larger probability at small T→V∕R energy transfer, ΔEu<300cm−1, and 2-methylnaphthalene has a little larger probability at large V→T energy transfer, −800cm−1<ΔEd<−100cm−1. However, these differences are close to our experimental uncertainty. No significant difference in the probability of very large energy transfer, such as supercollisions defined arbitrarily as...
Juan C. De La Fuente - One of the best experts on this subject based on the ideXlab platform.
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Synthesis and solubility measurement in supercritical carbon dioxide of two solid derivatives of 2-methylnaphthalene-1,4-dione (menadione): 2-(Benzylamino)-3-methylnaphthalene-1,4-dione and 3-(phenethylamino)-2-methylnaphthalene-1,4-dione
The Journal of Chemical Thermodynamics, 2016Co-Authors: Flavia C. Zacconi, Olga N. Nuñez, Adolfo L. Cabrera, Loreto M. Valenzuela, José M. Del Valle, Juan C. De La FuenteAbstract:Abstract Synthesis of two solid derivatives of vitamin K3 (2-methylnaphthalene-1,4-dione or menadione), 2-(benzylamino)-3-methylnaphthalene-1,4-dione and 3-(phenethylamino)-2-methylnaphthalene-1,4-dione was completed using a 1,4 Michael addition reaction at 323 K in an inert atmosphere, with reaction yields of 62% mol·mol−1 and 71% mol·mol−1, respectively, and a purity grade of 98% mol·mol−1 for each component. Isothermal solubility (mole fraction) of each solid derivative in supercritical carbon dioxide was performed using an analytic-recirculation methodology, with direct determination of the molar composition of the carbon dioxide-rich phase by using high performance liquid chromatography, at temperatures of (313, 323 and 333) K and pressures from (8–28) MPa. Results indicated that the range of measured solubilities were from (59 × 10−6 to 368 × 10−6) mol·mol−1 for solid 2-(benzylamino)-3-methylnaphthalene-1,4-dione and from (40 × 10−6 to 205 × 10−6) mol·mol−1 for solid 3-(phenethylamino)-2-methylnaphthalene-1,4-dione. The experimental solubility was validated using three approaches, estimating the combined expanded uncertainty of measurement for each solubility data point, evaluating the thermodynamic consistency of the data utilizing a test based on the Gibbs–Duhem equation, and verifying the self-consistency by correlating the experimental solubility values with a semi-empirical model as a function of temperature, pressure and pure carbon dioxide density.
Chih-jen Sung - One of the best experts on this subject based on the ideXlab platform.
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autoignition study of binary blends of n dodecane 1 methylnaphthalene and iso cetane 1 methylnaphthalene
Combustion and Flame, 2018Co-Authors: Goutham Kukkadapu, Chih-jen SungAbstract:Abstract An experimental study on autoignition of two binary blends, n-dodecane/1-Methylnaphthalene and iso-cetane/1-Methylnaphthalene, has been conducted using a rapid compression machine. Specifically, the ignition delays of the stoichiometric blend+air mixtures were measured at elevated pressures of PC = 15 bar and 30 bar, compressed temperatures of TC = 626–944 K, and varying blending ratios of the constituents. For a given set of PC and TC, a nonlinear response of the blend reactivity with respect to the relative amount of the constituents was observed. Since a comprehensive chemical kinetic model for the blends investigated here is under development, the current ignition delay datasets serve as the needed targets for model validation. For selected conditions, ignition delay simulations were conducted to highlight and discuss the deficiencies of the literature models and the potential areas for model improvements, especially at low temperatures. Further chemical kinetic analyses were conducted to gain understanding of the blending behavior predicted by the available model.
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Autoignition study of binary blends of n-dodecane/1-Methylnaphthalene and iso-cetane/1-Methylnaphthalene
Combustion and Flame, 2018Co-Authors: Goutham Kukkadapu, Chih-jen SungAbstract:Abstract An experimental study on autoignition of two binary blends, n-dodecane/1-Methylnaphthalene and iso-cetane/1-Methylnaphthalene, has been conducted using a rapid compression machine. Specifically, the ignition delays of the stoichiometric blend+air mixtures were measured at elevated pressures of PC = 15 bar and 30 bar, compressed temperatures of TC = 626–944 K, and varying blending ratios of the constituents. For a given set of PC and TC, a nonlinear response of the blend reactivity with respect to the relative amount of the constituents was observed. Since a comprehensive chemical kinetic model for the blends investigated here is under development, the current ignition delay datasets serve as the needed targets for model validation. For selected conditions, ignition delay simulations were conducted to highlight and discuss the deficiencies of the literature models and the potential areas for model improvements, especially at low temperatures. Further chemical kinetic analyses were conducted to gain understanding of the blending behavior predicted by the available model.
Goutham Kukkadapu - One of the best experts on this subject based on the ideXlab platform.
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autoignition study of binary blends of n dodecane 1 methylnaphthalene and iso cetane 1 methylnaphthalene
Combustion and Flame, 2018Co-Authors: Goutham Kukkadapu, Chih-jen SungAbstract:Abstract An experimental study on autoignition of two binary blends, n-dodecane/1-Methylnaphthalene and iso-cetane/1-Methylnaphthalene, has been conducted using a rapid compression machine. Specifically, the ignition delays of the stoichiometric blend+air mixtures were measured at elevated pressures of PC = 15 bar and 30 bar, compressed temperatures of TC = 626–944 K, and varying blending ratios of the constituents. For a given set of PC and TC, a nonlinear response of the blend reactivity with respect to the relative amount of the constituents was observed. Since a comprehensive chemical kinetic model for the blends investigated here is under development, the current ignition delay datasets serve as the needed targets for model validation. For selected conditions, ignition delay simulations were conducted to highlight and discuss the deficiencies of the literature models and the potential areas for model improvements, especially at low temperatures. Further chemical kinetic analyses were conducted to gain understanding of the blending behavior predicted by the available model.
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Autoignition study of binary blends of n-dodecane/1-Methylnaphthalene and iso-cetane/1-Methylnaphthalene
Combustion and Flame, 2018Co-Authors: Goutham Kukkadapu, Chih-jen SungAbstract:Abstract An experimental study on autoignition of two binary blends, n-dodecane/1-Methylnaphthalene and iso-cetane/1-Methylnaphthalene, has been conducted using a rapid compression machine. Specifically, the ignition delays of the stoichiometric blend+air mixtures were measured at elevated pressures of PC = 15 bar and 30 bar, compressed temperatures of TC = 626–944 K, and varying blending ratios of the constituents. For a given set of PC and TC, a nonlinear response of the blend reactivity with respect to the relative amount of the constituents was observed. Since a comprehensive chemical kinetic model for the blends investigated here is under development, the current ignition delay datasets serve as the needed targets for model validation. For selected conditions, ignition delay simulations were conducted to highlight and discuss the deficiencies of the literature models and the potential areas for model improvements, especially at low temperatures. Further chemical kinetic analyses were conducted to gain understanding of the blending behavior predicted by the available model.
