Results 251 to 260 of about 80,336 (288)

Enthalpies of vaporization of some aliphatic alcohols

The Journal of Chemical Thermodynamics, 1971
Abstract : A new calorimeter for measuring enthalpies of vaporization of pure liquids is described. Enthalpies of vaporization were determined over the temperature range 25 to 60C for the series of alcohols: methanol, ethanol, propanol, isopropanol, butanol, isobutanol, sec-butanol, and tert-butanol. (Author)
Jiŕí Polák, G.C. Benson
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Vapor Pressures and Enthalpies of Vaporization of a Series of the 1,3-Alkanediols

Journal of Chemical & Engineering Data, 2006
Molar enthalpies of vaporization of a series of six 1,3-alkanediols were obtained from the temperature dependence of the vapor pressure measured by the transpiration method. A large number of the primary experimental results on temperature dependences of vapor pressures have been collected from the literature and have been evaluated in order to derive ...
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Enthalpy relaxation in vapor-deposited butyronitrile

Thermochimica Acta, 1990
Abstract Spontaneous enthalpy-evolution processes reported previously for vapor-deposited noncrystalline samples of solid butyronitrile were analyzed in terms of the equations of Kohlrausch, Williams and Watts (KWW), and of Adam and Gibbs (AG).
Masaharu Oguni, Hideaki Hikawa, Hiroshi Suga   +2 more
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Vapour pressures and enthalpies of vaporization of alkylphenols

The Journal of Chemical Thermodynamics, 1990
Abstract The vapour pressures of 2-isopropyl-, 4-isopropyl-, 2-(2-amyl)-, 2- tert -butyl-, and 2,4-di- tert -butylphenol were found. An analysis of literature enthalpies of vaporization and vapour pressures was made. The coefficients of approximate relations of different kinds were found for the description of ( p , T ) of alkylphenols.
T.N Nesterova, A.G Nazmutdinov, V.S Tsvetkov, A.M Rozhnov, I.Yu Roshchupkina   +4 more
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A calorimetric determination of the enthalpy of vaporization of MoO3

The Journal of Chemical Thermodynamics, 1971
The enthalpy of vaporization of MoO3(l) has been determined from high-temperature calorimetric studies. A “best” value of ΔHv = (12.26 ± 0.35) kcal mol−1 has been obtained.
T.V. Charlu, O.J. Kleppa
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Modeling of the vaporization enthalpies of petroleum fractions

Fluid Phase Equilibria, 2016
Abstract The vaporization enthalpies of petroleum fractions are required in processing and transportation applications, as well as to optimize and design oil and gas production, and in heat flux calculations. A model was developed in this study for determining the vaporization enthalpies of pure hydrocarbon components and petroleum fractions.
Arash Kamari, Mehdi Sattari, Amir H. Mohammadi, Deresh Ramjugernath   +3 more
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Enthalpies of vaporization of some β-diketones

J. Chem. Soc., Dalton Trans., 1975
Molar enthalpies of vaporization of six β-diketones have been measured at 298·15 K by a direct calorimetric method; for 1,1,1,5,5,5-hexafluoropentane-2,4-dione, ΔHv0= 7·31 ± 0·03 kcal mol–1, 1,1,1-trifluoropentane-2,4-dione, 8·90 ± 0·4, 2,6-dimethylheptane-3,5-dione, 13·40 ± 0·04, 2,2-dimethylheptane-3,5-dione, 13·59 ± 0·03, 2,2,6-trimethylheptane-3,5 ...
Roger J. Irving, Manuel A. V. Ribeiro da Silva   +1 more
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Thermogravimetric method for a rapid estimation of vapor pressure and vaporization enthalpies of disubstituted benzoic acids: an attempt to correlate vapor pressures and vaporization enthalpies with structure

Structural Chemistry, 2013
A rapid estimation of vapor pressure and vaporization enthalpies of some disubstituted benzoic acids (2,4-dihydroxybenzoic acid (2,4-DHBA), 2,6-dihydroxybenzoic acid (2,6-DHBA), 3,4-dihydroxybenzoic acid (3,4-DHBA), 2,4-dinitrobenzoic acid (2,4-DNBA), 3,4-dinitrobenzoic acid (3,4-DNBA), 2,5-dibromobenzoic acid (2,5-DBBA), and 3,5-dibromobenzoic acid (3,
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Correlations for the Enthalpy of Vaporization of Pure Substances

Industrial & Engineering Chemistry Research, 2003
Two generalized correlations and a simple two-constant equation are evaluated for 25 pure refrigerant fluids. If two experimental data points are available, the simple equation was found to be preferable.
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Validation of the Vaporization Enthalpies of Some Simple Aliphatic Amides and Their Use in the Evaluation of the Vaporization Enthalpy of Valpromide and Valnoctamide

Journal of Chemical & Engineering Data, 2013
The vaporization enthalpy of valpromide and both diasteriomers of valnoctamide have been evaluated by correlation gas chromatography as has the fusion and sublimation enthalpy of valpromide.
Alexis Gutterman, Nigam Rath, James Chickos   +2 more
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