Results 11 to 20 of about 83,082 (173)

Thermochromatography of Heavy Actinides - Determination of the Sublimation Enthalpy of Es [PDF]

, 1997
The adsorption of Cf, Es, and Fm on several metals was studied thermochromatographically. In all systems investigated Es is adsorbed between the Cf and Fm, due to the increasing metallic divalency in the second half of the actinide series.
Schädel, Μ., Taut, Steffen, Gäggeler, H. W., Zvara, I., Eichler, B., Hübener, S.   +5 more
core   +3 more sources

On the Enthalpy of Formation and Enthalpy of Sublimation of Dihydroxylammonium 5,5′‐bitetrazole‐1,1′‐dioxide (TKX‐50) [PDF]

, 2023
The thermodynamic characterization of dihydroxylammonium 5,5′-bitetrazole-1,1′-dioxide (TKX-50) was reinvestigated. Although TKX-50 is one of the most promising new-generation energetic materials, contradictory reports are found in the literature with ...
Ana L. R. Silva, Silva, Ana L. R., Thomas M. Klapötke, Klapötke, Thomas M., Maria D. M. C. Ribeiro da Silva, Ana R. R. P. Almeida, Reinhardt, Jelena, Almeida, Ana R. R. P., Ribeiro da Silva, Maria D. M. C., Jelena Reinhardt   +9 more
core   +1 more source

Phase Transitions Equilibria of Five Dichlorinated Substituted Benzenes

Molecules, 2023
This work reports an experimental study aiming to determine the thermodynamic properties of five chlorinated compounds with environmental impact. The vapor pressures of the crystalline phases of three isomers of dichlorobenzoic acid (2,4-, 2,5-, and 2,6-)
Ana R. R. P. Almeida, Bruno D. A. Pinheiro, Manuel J. S. Monte   +2 more
doaj   +1 more source

Estimativa por DSC das entalpias de sublimação da etilenouréia e da propilenouréia: algumas correlações empíricas envolvendo amidas e tioamidas Estimative by DSC data of the sublimation enthalpies for ethyleneurea and propyleneurea: some empirical correlations with amides and tioamides

Química Nova, 1999
By using DSC data, the enthaplies of sublimation for ethyleneurea and propyleneurea, are calculated as 84 and 89 kJ mol-1 respectively. Using the vaporization enthalpy values for dimethylethyleneurea and dimethylprophyleneurea, as obtained from ...
Robson Fernandes de Farias
doaj   +1 more source

Molecular Structure, Thermodynamic and Spectral Characteristics of Metal-Free and Nickel Complex of Tetrakis(1,2,5-thiadiazolo)porphyrazine

Molecules, 2021
The Knudsen effusion method with mass spectrometric control of the vapor composition was used to study the possibility of a congruent transition to the gas phase and to estimate the enthalpy of sublimation of metal-free tetrakis(1,2,5-thiadiazolo ...
Yuriy A. Zhabanov, Alexey V. Eroshin, Igor V. Ryzhov, Ilya A. Kuzmin, Daniil N. Finogenov, Pavel A. Stuzhin   +5 more
doaj   +1 more source

Calculation of Five Thermodynamic Molecular Descriptors by Means of a General Computer Algorithm Based on the Group-Additivity Method: Standard Enthalpies of Vaporization, Sublimation and Solvation, and Entropy of Fusion of Ordinary Organic Molecules and Total Phase-Change Entropy of Liquid Crystals

Molecules, 2017
The calculation of the standard enthalpies of vaporization, sublimation and solvation of organic molecules is presented using a common computer algorithm on the basis of a group-additivity method.
Rudolf Naef, William E. Acree
doaj   +1 more source

Piezoelectric crystal microbalance measurements of enthalpy of sublimation of C₂–C₉ dicarboxylic acids [PDF]

Atmospheric Measurement Techniques, 2016
We present here a novel experimental set-up that is able to measure the enthalpy of sublimation of a given compound by means of piezoelectric crystal microbalances (PCMs).
F. Dirri, E. Palomba, A. Longobardo, E. Zampetti   +3 more
doaj   +1 more source

Isavuconazole: Thermodynamic Evaluation of Processes Sublimation, Dissolution and Partition in Pharmaceutically Relevant Media

Molecules, 2021
A temperature dependence of saturated vapor pressure of isavuconazole (IVZ), an antimycotic drug, was found by using the method of inert gas-carrier transfer and the thermodynamic functions of sublimation were calculated at a temperature of 298.15 K. The
Marina Ol’khovich, Angelica Sharapova, Svetlana Blokhina, German Perlovich   +3 more
doaj   +1 more source

Characterization of the Sublimation and Vapor Pressure of 2-(2-Nitrovinyl) Furan (G-0) Using Thermogravimetric Analysis: Effects of Complexation with Cyclodextrins

Molecules, 2015
In the present work, the sublimation of crystalline solid 2-(2-nitrovinyl) furan (G-0) in the temperature range of 35 to 60 °C (below the melting point of the drug) was studied using thermogravimetric analysis (TGA).
Vivian Ruz, Mirtha Mayra González, Danny Winant, Zenaida Rodríguez, Guy Van den Mooter   +4 more
doaj   +1 more source

Thermodynamic properties of some isomeric 5-(nitrophenyl)-furyl-2 derivatives

BMC Chemistry, 2019
Background The aim of the current work was to determine thermodynamical properties of 5-(nitrophenyl)-2-furaldehyde oximes and 3-[5-(nitrolphenyl)-2-furyl]acrylic acids.
Volodymyr Dibrivnyi, Andriy Marshalek, Iryna Sobechko, Yuriy Horak, Mykola Obushak, Nadiia Velychkivska, Lubomyr Goshko   +6 more
doaj   +1 more source