Results 211 to 220 of about 17,128 (260)

Phase Transition Enthalpy Measurements of Organic and Organometallic Compounds. Sublimation, Vaporization and Fusion Enthalpies From 1880 to 2010 [PDF]

open access: yesJournal of Physical and Chemical Reference Data, 2010
A compendium of phase change enthalpies published within the period 1880–2010 is reported. Phase change enthalpies including fusion,vaporization, and sublimation are included for organic, organometallic,and a few inorganic compounds. This compendium is a combination of three previous series focusing on phase change enthalpies updated to 2009 ...
William E Acree, James S Chickos
exaly   +2 more sources

Y2S3 – Y2O3 phase diagram and the enthalpies of phase transitions

Journal of Solid State Chemistry, 2018
Abstract A phase diagram of the Y2S3-Y2O3, system has been defined from 1000 K to melts for the first time; the enthalpies of phase transitions in the systems have been determined. The monoclinic phase δ-Y2S3 (P21/m, a = 1.7523(8) nm, b = 0.4010(9) nm, с = 1.0170(7) nm, β = 98.60(6)°; microhardness H = 411 ± 7 HV) transforms at 1716 ± 7 K to the ...
P.O. Andreev, L.A. Pimneva
exaly   +2 more sources

Long-chain linear alcohols: Reconciliation of phase transition enthalpies

The Journal of Chemical Thermodynamics, 2020
Abstract Thermodynamics of phase transitions of long-chain linear alcohols were revised by means of complementary experimental techniques: transpiration, differential scanning calorimetry (DSC), fast scanning calorimetry (FSC), and solution calorimetry (SC).
Nagrimanov R.N.   +7 more
openaire   +1 more source

Experimental determination of transformation enthalpies of metastable phase transitions in ion-irradiated NiAl3 [PDF]

open access: yesNuclear Instruments & Methods in Physics Research B, 1991
A novel experimental technique has been developed by which metastable phase transformations in thin films may be investigated. The technique is demonstrated by the determination of the enthalpies of transformation of two commonly observed metastable phases in the compound NiAl,; the vapor deposited, fee extended solid solution phase, and the ion ...
Gary S Was
exaly   +3 more sources

Enthalpies of non-isothermal phase transitions in binary systems

Thermochimica Acta, 1993
Abstract Two kinds of non-isothermal phase transitions in binary systems are considered: transformation of one phase into another and transition from two phases to one phase following an isothermal three-phase reaction (eutectic, peritectic or incongruent melting). The enthalpy of these transitions is defined on the basis of the equation for the heat
exaly   +2 more sources

Enthalpy of phase transitions of lactams

Russian Journal of Physical Chemistry A, 2012
The transpiration method is used to measure the temperature dependences of the vapors pressures of azacyclobutan-2-one (I, CAS 930-21-2) azacyclohexan-2-one (II, CAS 675-20-7); azacyclooctan-2-one (III, CAS 673-66-5); azacyclononan-2-one (IV, CAS 935-30-8) and azacyclotridecan-2-one (V, CAS 947-04-6).
V. N. Emel’yanenko   +4 more
openaire   +1 more source

Enthalpy of phase transition of isonicotinic acid

Chinese Journal of Chemical Engineering, 2017
Abstract In this work, the group contribution method of Chickos et al. was applied to estimate the fusion enthalpy of isonicotinic acid, and the obtained result (29.2 kJ·mol − 1 ) showed a large difference with the value (135 kJ·mol − 1 ) as reported from literatures and as determined by differential scanning calorimetry (DSC).
Dongfang Zhao   +3 more
openaire   +1 more source

Formation enthalpy of ThSiO4 and enthalpy of the thorite → huttonite phase transition

Geochimica et Cosmochimica Acta, 2005
Abstract The standard enthalpy of formation of thorite and huttonite and the enthalpy of the phase transition between these polymorphs were determined using high-temperature oxide melt solution calorimetry and transposed temperature drop calorimetry.
Lena Mazeina   +3 more
openaire   +1 more source

A database of lipid phase transition temperatures and enthalpy changes

Chemistry and Physics of Lipids, 1991
The systematic study of the mesomorphic phase properties of synthetic and biologically derived lipids began some 30 years ago. In the past decade, interest in this area has grown enormously. As a result, there exists a wealth of information on lipid phase behavior, but unfortunately, these data have, until now, been scattered throughout the literature ...
M, Caffrey, D, Moynihan, J, Hogan
openaire   +3 more sources

Improving the method of solution calorimetry for evaluation of the enthalpies of phase transitions and condensed state enthalpies of formation

Journal of Chemical Thermodynamics, 2019
© 2018 Elsevier Ltd In the present work, n-heptane was tested as a solvent with the zero-thermal effect of solution enthalpy for normal and cyclic alkanes. For alkanes in n-heptane, no obvious dependence of the solution enthalpy on alkyl chain length was found with the absolute values of the solution enthalpy being below the uncertainty of ...
Ruslan N Nagrimanov   +2 more
exaly   +3 more sources

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