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Alcohol Solvents

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William E. Acree – One of the best experts on this subject based on the ideXlab platform.

  • Comment on “Solution Thermodynamics of Benzotriazole in Different Pure Solvents
    Journal of Chemical & Engineering Data, 2018
    Co-Authors: William E. Acree

    Abstract:

    Mole fraction solubilities were calculated for benzotriazole dissolved in methanol, 2-propanol, 2-butanol, and acetonitrile at 298.15 K based on the published equation coefficients for the modified Apelblat model. In the case of the three Alcohol Solvents, the calculated mole fraction solubilities of benzotriazole were found to differ by up to 30% from the back-calculated values that the authors reported in their published paper. A significantly larger difference was found in the case of benzotriazole dissolved in acetonitrile.

  • Solubility of anthracene in binary toluene + Alcohol solvent mixtures at 298.15 K
    Physics and Chemistry of Liquids, 2012
    Co-Authors: Nishu Dabadge, Amy Tian, Anastasia Wilson, Maribel Barrera, Megan Payne, Erika Sanchez, Troy Sanchez, William E. Acree

    Abstract:

    Experimental solubilities are reported for anthracene in eight binary toluene + Alcohol solvent mixtures at 298.15 K. The Alcohol Solvents studied were 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, 2-propanol, 2-butanol, 2-methyl-1-propanol and 3-methyl-1-butanol. Results of these measurements were used to test a mathematical representation based on the combined nearly ideal binary solvent (NIBS)/Redlich–Kister equation. For the eight systems studied, the combined NIBS/Redlich–Kister equation was found to accurately describe the experimental data, with an average absolute deviation between the measured and back-calculated values being approximately ±0.4%.

  • Development of correlations for describing solute transfer into acyclic Alcohol Solvents based on the Abraham model and fragment-specific equation coefficients
    Fluid Phase Equilibria, 2010
    Co-Authors: Laura M. Sprunger, William E. Acree, Sai S. Achi, Michael H. Abraham

    Abstract:

    This article discusses the development of correlations for describing solute transfer into acyclic Alcohol Solvents based on the Abraham model and fragment-specific equation coefficients

Michael H. Abraham – One of the best experts on this subject based on the ideXlab platform.

  • Development of correlations for describing solute transfer into acyclic Alcohol Solvents based on the Abraham model and fragment-specific equation coefficients
    Fluid Phase Equilibria, 2010
    Co-Authors: Laura M. Sprunger, William E. Acree, Sai S. Achi, Michael H. Abraham

    Abstract:

    This article discusses the development of correlations for describing solute transfer into acyclic Alcohol Solvents based on the Abraham model and fragment-specific equation coefficients

  • Development of correlations for describing solute transfer into acyclic Alcohol Solvents based on the Abraham model and fragment-specific equation coefficients
    Fluid Phase Equilibria, 2009
    Co-Authors: Laura M. Sprunger, William E. Acree, Sai S. Achi, Michael H. Abraham

    Abstract:

    Abstract Gas-to-Alcohol partition coefficients have been compiled for 1880 different solute–Alcohol combinations, which comprised 23 acyclic Alcohols. These partition coefficients were converted into water-to-Alcohol partition coefficients using the corresponding gas-to-water partition coefficients. Both sets of partition coefficients were analyzed using the Abraham solvation parameter model with fragment-specific equation coefficients. The derived equations correlated the experimental gas-to-Alcohol and water-to-Alcohol partition coefficient data to within 0.14 and 0.15 log units, respectively. The fragment-specific equation coefficients that have been calculated for the CH 3 , CH 2 , CH, C and OH fragment groups can be combined to yield expressions capable of predicting the partition coefficients of solutes in other anhydrous Alcohol Solvents.

  • enthalpy of solvation correlations for gaseous solutes dissolved in Alcohol Solvents based on the abraham model
    Qsar & Combinatorial Science, 2008
    Co-Authors: Christina Mintz, William E. Acree, Tara Ladlie, Katherine Burton, Michael Clark, Michael H. Abraham

    Abstract:

    Data have been assembled from the published literature on the enthalpies of solvation for more than 100 compounds dissolved in methanol, ethanol, and 1-butanol. It is shown that an Abraham solvation equation with five descriptors can be used to correlate the experimental enthalpies of solvation to within Standard Deviations (SDs) of 2.70 kJ/mol (methanol), 2.53 kJ/mol (ethanol), and 2.34 kJ/mol (1-butanol). The derived correlations provide very accurate mathematical descriptions of the measured enthalpy of solvation data at 298 K, which in the case of methanol span a range of about 105 kJ/mol. Division of the experimental values into a training set and a test set shows that there is no bias in predictions, and that the predictive capability of the correlations is better than 3.0 kJ/mol.

Somchai Thongtem – One of the best experts on this subject based on the ideXlab platform.

  • effect of Alcohol Solvents on tio2 films prepared by sol gel method
    Surface & Coatings Technology, 2017
    Co-Authors: Orawan Wiranwetchayan, Surin Promnopas, Titipun Thongtem, Arnon Chaipanich, Somchai Thongtem

    Abstract:

    Abstract The TiO2 (anatase) films were prepared by sol-gel method using titanium (IV) isopropoxide (TTIP) as a precursor and polyvinylpyrrolidone (PVP) as a polymeric precursor dissolved in different Alcohol Solvents (methanol, ethanol, isopropanol and 1-butanol) and were heated treatment at 450 °C for 1 h. In this research, the Alcohol Solvents have significant influence on the morphology, crystalline degree and energy band gap of TiO2. The number of carbon, boiling point, dielectric constant and viscosity of Alcohol Solvents were the main factor influencing the size of TiO2 nanoparticles. The Alcohol solvent with higher boiling point and viscosity, and long length of carbon chain can lead to the smaller crystallite size. The number of carbon and viscosity of solvent and crystallite size can play the important role in the agglomeration of particles. The energy band gaps of the films determined by UV-visible spectroscopy were in the 3.00–3.30 eV range.

  • Effect of Alcohol Solvents on TiO2 films prepared by sol–gel method
    Surface and Coatings Technology, 2017
    Co-Authors: Orawan Wiranwetchayan, Surin Promnopas, Titipun Thongtem, Arnon Chaipanich, Somchai Thongtem

    Abstract:

    Abstract The TiO2 (anatase) films were prepared by sol-gel method using titanium (IV) isopropoxide (TTIP) as a precursor and polyvinylpyrrolidone (PVP) as a polymeric precursor dissolved in different Alcohol Solvents (methanol, ethanol, isopropanol and 1-butanol) and were heated treatment at 450 °C for 1 h. In this research, the Alcohol Solvents have significant influence on the morphology, crystalline degree and energy band gap of TiO2. The number of carbon, boiling point, dielectric constant and viscosity of Alcohol Solvents were the main factor influencing the size of TiO2 nanoparticles. The Alcohol solvent with higher boiling point and viscosity, and long length of carbon chain can lead to the smaller crystallite size. The number of carbon and viscosity of solvent and crystallite size can play the important role in the agglomeration of particles. The energy band gaps of the films determined by UV-visible spectroscopy were in the 3.00–3.30 eV range.