The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Osamu Yamamuro - One of the best experts on this subject based on the ideXlab platform.
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hydration of alcohol clusters in 1 propanol water mixture studied by quasielastic neutron scattering and an interpretation of anomalous excess partial molar volume
Journal of Chemical Physics, 2006Co-Authors: Masakatsu Misawa, D Hosaka, Yasuhiro Inamura, Osamu YamamuroAbstract:Quasielastic neutron scattering measurements have been made for 1-propanol-water mixtures in a range of alcohol concentration from 0.0 to 0.167 in mole fraction at 25°C. Fraction α of water molecules hydrated to fractal surface of alcohol clusters in 1-propanol-water mixture was obtained as a function of alcohol concentration. Average hydration number Nws of 1-propanol molecule is derived from the value of α as a function of alcohol concentration. By extrapolating Nws to infinite dilution, we obtain values of 12–13 as hydration number of isolated 1-propanol molecule. A simple interpretation of structural origin of anomalous excess partial molar volume of water is proposed and as a result a simple equation for the excess partial molar volume is deduced in terms of α. Calculated values of the excess partial molar volumes of water and 1-propanol and the excess molar volume of the mixture are in good agreement with experimental values.
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hydration of alcohol clusters in 1 propanol water mixture studied by quasielastic neutron scattering and an interpretation of anomalous excess partial molar volume
Journal of Chemical Physics, 2006Co-Authors: Masakatsu Misawa, D Hosaka, Yasuhiro Inamura, Osamu YamamuroAbstract:Quasielastic neutron scattering measurements have been made for 1-propanol-water mixtures in a range of alcohol concentration from 0.0 to 0.167 in mole fraction at 25 degrees C. Fraction alpha of water molecules hydrated to fractal surface of alcohol clusters in 1-propanol-water mixture was obtained as a function of alcohol concentration. Average hydration number N(ws) of 1-propanol molecule is derived from the value of alpha as a function of alcohol concentration. By extrapolating N(ws) to infinite dilution, we obtain values of 12-13 as hydration number of isolated 1-propanol molecule. A simple interpretation of structural origin of anomalous excess partial molar volume of water is proposed and as a result a simple equation for the excess partial molar volume is deduced in terms of alpha. Calculated values of the excess partial molar volumes of water and 1-propanol and the excess molar volume of the mixture are in good agreement with experimental values.
Masakatsu Misawa - One of the best experts on this subject based on the ideXlab platform.
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hydration of alcohol clusters in 1 propanol water mixture studied by quasielastic neutron scattering and an interpretation of anomalous excess partial molar volume
Journal of Chemical Physics, 2006Co-Authors: Masakatsu Misawa, D Hosaka, Yasuhiro Inamura, Osamu YamamuroAbstract:Quasielastic neutron scattering measurements have been made for 1-propanol-water mixtures in a range of alcohol concentration from 0.0 to 0.167 in mole fraction at 25°C. Fraction α of water molecules hydrated to fractal surface of alcohol clusters in 1-propanol-water mixture was obtained as a function of alcohol concentration. Average hydration number Nws of 1-propanol molecule is derived from the value of α as a function of alcohol concentration. By extrapolating Nws to infinite dilution, we obtain values of 12–13 as hydration number of isolated 1-propanol molecule. A simple interpretation of structural origin of anomalous excess partial molar volume of water is proposed and as a result a simple equation for the excess partial molar volume is deduced in terms of α. Calculated values of the excess partial molar volumes of water and 1-propanol and the excess molar volume of the mixture are in good agreement with experimental values.
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hydration of alcohol clusters in 1 propanol water mixture studied by quasielastic neutron scattering and an interpretation of anomalous excess partial molar volume
Journal of Chemical Physics, 2006Co-Authors: Masakatsu Misawa, D Hosaka, Yasuhiro Inamura, Osamu YamamuroAbstract:Quasielastic neutron scattering measurements have been made for 1-propanol-water mixtures in a range of alcohol concentration from 0.0 to 0.167 in mole fraction at 25 degrees C. Fraction alpha of water molecules hydrated to fractal surface of alcohol clusters in 1-propanol-water mixture was obtained as a function of alcohol concentration. Average hydration number N(ws) of 1-propanol molecule is derived from the value of alpha as a function of alcohol concentration. By extrapolating N(ws) to infinite dilution, we obtain values of 12-13 as hydration number of isolated 1-propanol molecule. A simple interpretation of structural origin of anomalous excess partial molar volume of water is proposed and as a result a simple equation for the excess partial molar volume is deduced in terms of alpha. Calculated values of the excess partial molar volumes of water and 1-propanol and the excess molar volume of the mixture are in good agreement with experimental values.
Yoshikata Koga - One of the best experts on this subject based on the ideXlab platform.
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additive effect of 1 propanol and 2 propanol on molecular organization of h2o in the water rich region excess chemical potential partial molar enthalpy and volume of 1 propanol in 1 propanol 2 propanol h2o at 25 c
Bulletin of the Chemical Society of Japan, 2001Co-Authors: Jianhua Hu, Wesley Minda Chiang, Daniel Heng Chi Chen, Charles A. Haynes, Peter Westh, Yoshikata KogaAbstract:Excess chemical potential, μ1PE, partial molar enthalpy, H1PE and volume of 1-propanol, V1PE, were determined as a function of mole fraction of 1-propanol, x1P, in mixed solvents of aqueous 2-propanol with various initial mole fraction of 2-propanol, x2P0. The 1-propanol–1-propanol interaction functions, H1P–1PE ≡ N(∂H1PE/∂n1P), and V1P–1PE ≡ N(∂V1PE/∂n1P), were evaluated by graphical differentiation. The x1P-dependence of all these quantities indicates that 1-propanol and 2-propanol modify the molecular organization of H2O in the same and additive manner in the water-rich region. The additive effect of 1-propanol and that of 2-propanol are in the ratio of (0.07/0.08).
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excess partial molar enthalpy of 1 propanol in 1 propanol nacl h2o at 25 c the effect of nacl on molecular organization of h2o
Journal of Physical Chemistry B, 1999Co-Authors: Hiroshi Matsuo, Denise C Y Wong, Seiji Sawamura, And Yoshihiro Taniguchi, Yoshikata KogaAbstract:Excess partial molar enthalpies of 1-propanol, H1PE, in 1-propanol−NaCl−H2O were measured directly, accurately, and in small increments in mole fraction of 1-propanol, x1P, at 25 °C in the range xNaCl < 0.04. xNaCl is the mole fraction of NaCl. The enthalpic interaction function, H1P-1PE, between 1-propanol molecules was then evaluated. H1P-1PE is a convenient, model-free measure for the intermolecular interaction in terms of enthalpy. The behavior of these thermodynamic quantities was compared with that of the binary 1-propanol−H2O. Based on the knowledge accumulated in our laboratory on the binary aqueous 1-propanol, the effect of NaCl on H2O became apparent. Our tentative conclusions are that (1) a NaCl molecule “binds” to seven or eight molecules of H2O on dissolving into H2O, and (2) the reminder of bulk H2O away from solute NaCl is not affected and stays almost the same as pure H2O.
Yasuhiro Inamura - One of the best experts on this subject based on the ideXlab platform.
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hydration of alcohol clusters in 1 propanol water mixture studied by quasielastic neutron scattering and an interpretation of anomalous excess partial molar volume
Journal of Chemical Physics, 2006Co-Authors: Masakatsu Misawa, D Hosaka, Yasuhiro Inamura, Osamu YamamuroAbstract:Quasielastic neutron scattering measurements have been made for 1-propanol-water mixtures in a range of alcohol concentration from 0.0 to 0.167 in mole fraction at 25°C. Fraction α of water molecules hydrated to fractal surface of alcohol clusters in 1-propanol-water mixture was obtained as a function of alcohol concentration. Average hydration number Nws of 1-propanol molecule is derived from the value of α as a function of alcohol concentration. By extrapolating Nws to infinite dilution, we obtain values of 12–13 as hydration number of isolated 1-propanol molecule. A simple interpretation of structural origin of anomalous excess partial molar volume of water is proposed and as a result a simple equation for the excess partial molar volume is deduced in terms of α. Calculated values of the excess partial molar volumes of water and 1-propanol and the excess molar volume of the mixture are in good agreement with experimental values.
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hydration of alcohol clusters in 1 propanol water mixture studied by quasielastic neutron scattering and an interpretation of anomalous excess partial molar volume
Journal of Chemical Physics, 2006Co-Authors: Masakatsu Misawa, D Hosaka, Yasuhiro Inamura, Osamu YamamuroAbstract:Quasielastic neutron scattering measurements have been made for 1-propanol-water mixtures in a range of alcohol concentration from 0.0 to 0.167 in mole fraction at 25 degrees C. Fraction alpha of water molecules hydrated to fractal surface of alcohol clusters in 1-propanol-water mixture was obtained as a function of alcohol concentration. Average hydration number N(ws) of 1-propanol molecule is derived from the value of alpha as a function of alcohol concentration. By extrapolating N(ws) to infinite dilution, we obtain values of 12-13 as hydration number of isolated 1-propanol molecule. A simple interpretation of structural origin of anomalous excess partial molar volume of water is proposed and as a result a simple equation for the excess partial molar volume is deduced in terms of alpha. Calculated values of the excess partial molar volumes of water and 1-propanol and the excess molar volume of the mixture are in good agreement with experimental values.
D Hosaka - One of the best experts on this subject based on the ideXlab platform.
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hydration of alcohol clusters in 1 propanol water mixture studied by quasielastic neutron scattering and an interpretation of anomalous excess partial molar volume
Journal of Chemical Physics, 2006Co-Authors: Masakatsu Misawa, D Hosaka, Yasuhiro Inamura, Osamu YamamuroAbstract:Quasielastic neutron scattering measurements have been made for 1-propanol-water mixtures in a range of alcohol concentration from 0.0 to 0.167 in mole fraction at 25°C. Fraction α of water molecules hydrated to fractal surface of alcohol clusters in 1-propanol-water mixture was obtained as a function of alcohol concentration. Average hydration number Nws of 1-propanol molecule is derived from the value of α as a function of alcohol concentration. By extrapolating Nws to infinite dilution, we obtain values of 12–13 as hydration number of isolated 1-propanol molecule. A simple interpretation of structural origin of anomalous excess partial molar volume of water is proposed and as a result a simple equation for the excess partial molar volume is deduced in terms of α. Calculated values of the excess partial molar volumes of water and 1-propanol and the excess molar volume of the mixture are in good agreement with experimental values.
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hydration of alcohol clusters in 1 propanol water mixture studied by quasielastic neutron scattering and an interpretation of anomalous excess partial molar volume
Journal of Chemical Physics, 2006Co-Authors: Masakatsu Misawa, D Hosaka, Yasuhiro Inamura, Osamu YamamuroAbstract:Quasielastic neutron scattering measurements have been made for 1-propanol-water mixtures in a range of alcohol concentration from 0.0 to 0.167 in mole fraction at 25 degrees C. Fraction alpha of water molecules hydrated to fractal surface of alcohol clusters in 1-propanol-water mixture was obtained as a function of alcohol concentration. Average hydration number N(ws) of 1-propanol molecule is derived from the value of alpha as a function of alcohol concentration. By extrapolating N(ws) to infinite dilution, we obtain values of 12-13 as hydration number of isolated 1-propanol molecule. A simple interpretation of structural origin of anomalous excess partial molar volume of water is proposed and as a result a simple equation for the excess partial molar volume is deduced in terms of alpha. Calculated values of the excess partial molar volumes of water and 1-propanol and the excess molar volume of the mixture are in good agreement with experimental values.
