The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
William E. Acree - One of the best experts on this subject based on the ideXlab platform.
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Solubility of Anthracene in Ternary Cyclohexane + Propanol + 2-Methyl-1-propanol and Cyclohexane + Butanol + 2-Methyl-1-propanol Mixtures
Journal of Chemical & Engineering Data, 2008Co-Authors: Amy Proctor, Brooke H. Blake-taylor, William E. AcreeAbstract:Experimental solubilities are reported for anthracene dissolved in ternary cyclohexane + 1-propanol + 2-methyl-1-propanol, cyclohexane + 2-propanol + 2-methyl-1-propanol, cyclohexane + 1-butanol + 2-methyl-1-propanol, and cyclohexane + 2-butanol + 2-methyl-1-propanol solvent mixtures at 298.15 K and atmospheric pressure. For each of the four ternary solvent systems, 19 compositions were studied. Results of these measurements are used to test the predictive ability of the ternary solvent form of the Jouyban−Acree model (also referred to in the literature as the Combined NIMS/Redlich−Kister model). Computations showed that the model predicted the observed solubility behavior to within an overall average absolute relative percentage deviation of about 1.3.
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Solubility of pyrene in binary alcohol + 1-propanol and alcohol + 2-propanol solvent mixtures
Journal of Chemical & Engineering Data, 1995Co-Authors: Anita I. Zvaigzne, Brian J. Miller, William E. AcreeAbstract:Article on the solubility of pyrene in binary alcohol + 1-propanol and alcohol + 2-propanol solvent mixtures.
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Solubility of Pyrene in Binary Alkane + 1-Propanol and Alkane + 2-Propanol Solvent Mixtures
Journal of Chemical & Engineering Data, 1993Co-Authors: Anita I. Zvaigzne, William E. AcreeAbstract:Article on the solubility of pyrene in binary alkane + 1-propanol and alkane + 2-propanol solvent mixtures.
Tadao Harada - One of the best experts on this subject based on the ideXlab platform.
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transformation of benzonitrile into benzyl alcohol and benzoate esters in supercritical alcohols
Tetrahedron, 2008Co-Authors: Takashi Kamitanaka, Tomoko Matsuda, Kenji Yamamoto, Tadao HaradaAbstract:Abstract The reactions of benzonitrile in supercritical methanol, ethanol, and 2-propanol were investigated under non-catalytic conditions. In supercritical methanol, benzonitrile was converted to methyl benzoate in high yield. The esterification reaction also occurred in supercritical ethanol to afford ethyl benzoate in moderate yield. The esterification could occur via a route analogous to the Pinner reaction. On the other hand, benzonitrile in supercritical 2-propanol yielded no ester. Benzyl alcohol was the major product in supercritical 2-propanol. We investigated the reaction of the C N bond in supercritical 2-propanol. In supercritical 2-propanol, N -benzylideneaniline was transferred to the reduction product ( N -benzylaniline) and hydrolysis products (benzyl alcohol and aniline). The hydrolysis reaction was restricted when the reaction was carried out in supercritical 2-propanol with a low water content. This indicates that the water in the 2-propanol acts as a reagent for the hydrolysis of the C N bond. These results suggested the following reaction process: C 6 H 5 C N→C 6 H 5 CH NH→C 6 H 5 CHO→C 6 H 5 CH 2 OH.
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reduction of acetophenone using supercritical 2 propanol the substituent effect and the deuterium kinetic isotope effect
Tetrahedron Letters, 2003Co-Authors: Takashi Kamitanaka, Tomoko Matsuda, Tadao HaradaAbstract:Abstract The reductions of several substituted acetophenones using supercritical 2-propanol were carried out to estimate the Hammett's reaction constant ( ρ =0.33). Also, the reduction of acetophenone using supercritical deuteriated 2-propanol was carried out to determine the rate-determining step. The kinetic isotope effects were observed in the reduction using 2-deuterio-2-propanol ( k H / k D =1.6) and O -deuterio-2-propanol ( k H / k D =2.0). These findings suggest that the reaction proceeds via a cyclic transition state between acetophenone and 2-propanol similar to that of the Meerwein–Ponndorf–Verley reduction.
M. Iida - One of the best experts on this subject based on the ideXlab platform.
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Structural effects of organic compounds as corrosion inhibitors for hydrogen entry into iron in sulphuric acid
Corrosion Science, 1993Co-Authors: Kenzo Kobayashi, Kenichi Shimizu, M. IidaAbstract:Abstract Effects of Propynol, methyl-propynyl ether, N , N -dimethylpropynylamine and trimethylpropynyl ammonium cation on hydrogen entry into iron and corrosion were investigated by weight loss tests and electrochemical measurements in de-aerated 1 N sulphuric acid. Trimethylpropynyl ammonium cation gave the best inhibition for hydrogen entry. It is proposed that the inhibition of hydrogen entry by acetylenic compounds is essential to lower the π electron density by the introduction of a strong electron attracting group adjacent to the triple bond, resulting in the enhancement of adsorption by back-donation.
Vicente Gomis - One of the best experts on this subject based on the ideXlab platform.
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Equilibrium diagram of the water + K2SO4 or Na2SO4 + 1-propanol or 2-propanol systems at boiling conditions and 101.3 kPa
Fluid Phase Equilibria, 2020Co-Authors: Alejandro Gomis, Jorge Garcia-cano, Juan Carlos Asensi, Alicia Font, Vicente GomisAbstract:Abstract Thermodynamically consistent phase equilibrium data at 101.3 kPa and boiling conditions were determined for the ternary systems water + Na2SO4 + 1-propanol, water + Na2SO4 + 2-propanol, water + K2SO4 + 1-propanol and water + K2SO4 + 2-propanol. In contrast to the systems with Na2SO4, the salting-out effect of K2SO4 was not sufficient to split the miscible propanol + water mixture into two liquid phases. The UNIQUAC equation extended to electrolytes for the liquid phase activity coefficients was used to predict the phase equilibria of all the systems. The model reproduced the experimental results quite well, except for the ternary system water + K2SO4 + 1-propanol. In this case the model predicted liquid-liquid splitting into two liquid phases, when there is not.
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Liquid-liquid-solid equilibria for the ternary systems water-lithium chloride-1-propanol or 2-propanol at 25 °C
Fluid Phase Equilibria, 1996Co-Authors: Vicente Gomis, Francisco Ruiz, Juan Carlos Asensi, Pilar CayuelaAbstract:Liquid-liquid-solid equilibria for the ternary systems water-lithium chloride-1-propanol and water-lithium chloride-2-propanol at 25 °C have been measured experimentally. The equilibrium diagrams determined show differences between the two systems. In the system with 1-propanol, the solid phase of the liquid-liquid-solid region is monohydrated salt. However in the system with 2-propanol it is anhydrous salt.
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Liquid-liquid-solid equilibria for the ternary systems water-sodium chloride or potassium chloride-1-propanol or 2-propanol
Fluid Phase Equilibria, 1994Co-Authors: Vicente Gomis, Francisco Ruiz, Guillermo De Vera, Eladio López, M. Dolores SaqueteAbstract:Abstract Gomis V., Ruiz F., De Vera G., Lopez E. and Saquete M.D., 1994. Liquid-liquid-solid equilibria for the ternary systems water-sodium chloride or potassium chloride-1-propanol or 2-propanol. Fluid Phase Equilibria, 98:141-147. Liquid-liquid-solid equilibria for the ternary systems water-sodium chloride-1-propanol, water-potassium chloride-1-propanol, water-sodium chloride-2-propanol and water-potassium chloride-2-propanol have been measured at 25°C. The salt effect on the water miscible organic compound is greater with NaCl than with KC1, and greater on the 1-propanol than on the 2-propanol.
Kei Kitagawa - One of the best experts on this subject based on the ideXlab platform.
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liquid liquid phase equilibria of 1 propanol or 2 propanol water containing dipotassium hydrogen phosphate
Journal of Chemical & Engineering Data, 2006Co-Authors: Hirotake Katayama, Kei KitagawaAbstract:Liquid−liquid equilibria (LLE) for the systems 1-propanol + water + K2HPO4 and 2-propanol + water + K2HPO4 were measured at temperatures of (288.15, 298.15, and 308.15) K. The binodal curves of the systems were fitted to a nonlinear equation relating the mass fraction of 1- or 2-propanol to that of K2HPO4, and the tie lines were successfully correlated with the Othmer−Tobias and Bancroft equations. LLE results were predicted using a pair of the binodal and Bancroft equations and one of the binodal and Othmer−Tobias equations. Both predictions showed close agreement with experimental values, and the average root-mean-square deviations of the values predicted from the former pair were 0.28 % and 0.27 % for the systems 1-propanol + water + K2HPO4 and 2-propanol + water + K2HPO4, respectively.
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Liquid-liquid phase equilibria of (1-propanol or 2-propanol + water) containing dipotassium hydrogen phosphate
Journal of Chemical & Engineering Data, 2006Co-Authors: Hirotake Katayama, Kei KitagawaAbstract:Liquid−liquid equilibria (LLE) for the systems 1-propanol + water + K2HPO4 and 2-propanol + water + K2HPO4 were measured at temperatures of (288.15, 298.15, and 308.15) K. The binodal curves of the systems were fitted to a nonlinear equation relating the mass fraction of 1- or 2-propanol to that of K2HPO4, and the tie lines were successfully correlated with the Othmer−Tobias and Bancroft equations. LLE results were predicted using a pair of the binodal and Bancroft equations and one of the binodal and Othmer−Tobias equations. Both predictions showed close agreement with experimental values, and the average root-mean-square deviations of the values predicted from the former pair were 0.28 % and 0.27 % for the systems 1-propanol + water + K2HPO4 and 2-propanol + water + K2HPO4, respectively.
