The Experts below are selected from a list of 255 Experts worldwide ranked by ideXlab platform

S. V. Alekseenko - One of the best experts on this subject based on the ideXlab platform.

A P Vinokurov - One of the best experts on this subject based on the ideXlab platform.

Haruki Sato - One of the best experts on this subject based on the ideXlab platform.

  • pρTx-property measurements near saturation in the Gaseous Phase for propane + isobutane
    Journal of Chemical & Engineering Data, 2009
    Co-Authors: Atsushi Yamaguchi, Mitsuru Mukoubayashi, Tae Matsunami, Haruki Sato
    Abstract:

    pρTx-property measurements near saturation in the Gaseous Phase for propane (1) + isobutane (2) at x1 = 0.25 (w1 = 20.19 %), x1 = 0.5 (w1 = 43.14 %), and x1 = 0.80 (w1 = 75.22 %) are reported. The data near saturation in the Gaseous Phase are important information for deriving reliable property values such as specific heats near saturation or for determining the second and third virial coefficients. The measurements were performed using a magnetic suspension densimeter. 154 pρTx values for propane + isobutane mixtures were obtained at the temperatures of (303.15 and 323.15) K and for pressures up to 980 kPa. The experimental uncertainties are estimated to be 10 mK for temperature, 0.45 kPa for pressure, (0.03 % + 0.005 kg·m−3) for density, and 0.31 % in mass fraction (0.32 % in mole fraction). The purities of propane and isobutane were both 99.99 % in mass fraction according to the report from the manufacturer. The measurements are used for assessing the reliability of existing equations of state.

  • PVT property measurements for R143a, R125, and R32 in the Gaseous Phase
    Journal of Chemical & Engineering Data, 2007
    Co-Authors: Mitsuru Mukoubayashi, Kengo Ichikura, Yuya Kano, Haruki Sato
    Abstract:

    PVT property measurements for the hydrofluorocarbons R143a, R125, and R32 are presented in the Gaseous Phase including the region near saturation. The measurements were performed by means of magnetic suspension densimeter. One hundred and two PVT properties for R143a, 144 PVT properties for R125, and 101 PVT properties for R32 were obtained in the range of temperature from (283 to 323) K and pressures up to 3.2 MPa. The experimental uncertainties are estimated to be 10 mK for temperature, (0.74 to 0.84) kPa for pressure and (0.03 % + 0.005 kg·m -3 ) for density. The sample purities of R143a, R125, and R32 were better than 99.99 %. The measurements are compared with the available data including the values calculated from existing equations of state.

  • PVTx property measurements for difluoromethane + pentafluoroethane (R32 + R125) in the Gaseous Phase
    Journal of Chemical & Engineering Data, 2007
    Co-Authors: Mitsuru Mukoubayashi, Kengo Ichikura, Haruki Sato
    Abstract:

    PVTx property measurements in the Gaseous Phase for difluoromethane (1) + pentafluoroethane (2) (R32 + R125) at x1 = 0.25 (w1 = 12.62 %), x1 = 0.5 (w1 = 30.24 %), and x1 = 0.75 (w1 = 56.53 %) are r...

Juan Z. Dávalos - One of the best experts on this subject based on the ideXlab platform.

  • Thermochemistry of R-SH group in Gaseous Phase: Experimental and theoretical studies of three sulfur imidazole derivatives
    The Journal of Chemical Thermodynamics, 2018
    Co-Authors: Gastón Perdomo, Henoc Flores, Fernando Ramos, Rafael Notario, Vera L.s. Freitas, Maria D.m.c. Ribeiro Da Silva, E. Adriana Camarillo, Juan Z. Dávalos
    Abstract:

    Abstract In the present work, we report the standard combustion energies of 2-mercapto-1-methylimidazole, 2-mercapto-5-aminobenzimidazole and 2-mercapto-5-methoxybenzimidazole, obtained experimentally from measurements with a rotatory-bomb combustion calorimeter. With these data, for each one of the three aforementioned compounds, the corresponding standard molar combustion enthalpies and the standard molar enthalpies of formation, in the crystalline Phase, are calculated. The enthalpies of sublimation of each compound, obtained experimentally using a Calvet Setaram HT 1000 microcalorimeter, are also reported. Using the values of the enthalpies of formation in the crystalline Phase and the enthalpies of sublimation, both at 298.15 K, for each compound, the corresponding standard molar enthalpies of formation in gas Phase were calculated. Complementary, the enthalpies of formation in the Gaseous Phase were derived from theoretical calculations made with Gaussian-n composite methodology with n = 3 and 4. The experimental and computational studies suggest that in Gaseous Phase, the form more stable of each compound is the thione form.

S I Shtork - One of the best experts on this subject based on the ideXlab platform.