Results 1 to 10 of about 162,762 (296)

Sublimation Study of Six 5-Substituted-1,10-Phenanthrolines by Knudsen Effusion Mass Loss and Solution Calorimetry [PDF]

open access: yesEntropy, 2022
The vapor pressures of six solid 5-X-1,10-phenanthrolines (where X = Cl, CH3, CN, OCH3, NH2, NO2) were determined in suitable temperature ranges by Knudsen Effusion Mass Loss (KEML).
Bruno Brunetti   +6 more
doaj   +2 more sources

Acid–Base Properties of Oxides Derived from Oxide Melt Solution Calorimetry [PDF]

open access: yesMolecules, 2023
The paper analyzes the relationships among acid–base interactions in various oxide systems and their thermodynamics. Extensive data on enthalpies of solution of binary oxides in oxide melts of several compositions, obtained by high-temperature oxide melt
Alexandra Navrotsky   +1 more
doaj   +2 more sources

Determination and Validation of Standard Enthalpies of Formation and Sublimation of Potassium Salts Using Solution Calorimetry and Quantum‐Chemical Calculations [PDF]

open access: yesChemistryOpen
This work aims to develop an approach for the systematic determination of the formation and sublimation enthalpies of inorganic compounds using the examples of potassium bicarbonate, potassium carbonate, and potassium formate.
Zohreh Amanollahi   +4 more
doaj   +2 more sources

The magnesium-palladium-silver system: Thermodynamic properties of the liquid phase [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2023
A drop calorimetry method was used to measure the partial and integral mixing enthalpies of Ag-Mg-Pd liquid solutions. The experiments were performed for six separate series of liquid alloys starting from the binary alloys with constant xAg/xMg ratios ...
Dębski A.   +4 more
doaj   +1 more source

Thermochemistry of Solution, Solvation, and Hydrogen Bonding of Cyclic Amides in Proton Acceptor and Donor Solvents. Amide Cycle Size Effect

open access: yesMolecules, 2021
In the present work, the thermochemistry of solution, solvation, and hydrogen bonding of cyclic amides in proton acceptor (B) and proton donor (RXH) solvents were studied. The infinite dilution solution enthalpies of δ-valerolactam, N-methylvalerolactam,
Ilnaz T. Rakipov   +5 more
doaj   +1 more source

Application of Solution Calorimetry to Determining the Fusion Enthalpy of an Arylaliphatic Compound at 298.15 K: n-Octadecanophenone

open access: yesLiquids, 2022
Evaluating the temperature dependence of the fusion enthalpy is no trivial task, as any compound melts at a unique temperature. At the same time, knowledge of the fusion enthalpies under some common conditions, particularly at the reference temperature ...
Mikhail I. Yagofarov   +3 more
doaj   +1 more source

Thermodynamic Properties of 3- and 4-Ethoxyacetanilides between 80 and 480 K

open access: yesMolecules, 2023
In this work, we present a comprehensive study of the thermodynamic properties of 3-and 4-ethoxyacetanilides. The heat capacities in crystalline, liquid, and supercooled liquid states from 80 to 475 K were obtained using adiabatic, differential scanning (
Andrey A. Sokolov   +7 more
doaj   +1 more source

First and Second Dissociation Enthalpies in Bi-Component Crystals Consisting of Maleic Acid and L-Phenylalanine

open access: yesMolecules, 2021
The energetics of the stepwise dissociation of a A:B2 bi-component crystal, according to A:B2(cr) → A:B(cr) + B(cr) and A:B(cr) → A(cr) + B(cr), was investigated using MA:Phe2 and MA:Phe (MA = maleic acid; Phe = L-phenylalanine) as model systems.
Inês O. Feliciano   +4 more
doaj   +1 more source

Sublimation/vaporization and solvation enthalpies of monosubstituted pyridine derivatives

open access: yesChemical Thermodynamics and Thermal Analysis, 2022
Different sectors, including medicine and display technology, utilize substituted pyridines. To establish the quality of products manufactured from pyridines, chemical thermodynamics of the solvation and evaporation enthalpies of the pyridines are ...
Rawand S. Abdullah, Boris N. Solomonov
doaj   +1 more source

Software solution for control and data acquisition in the pulse calorimetry method [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2013
This work presents a software solution for adjusting, controlling, displaying, and acquiring parameters and data in the pulse calorimetry experimental technique for specific heat capacity, electrical resistivity, total hemispherical emissivity ...
Babić Marijana   +2 more
doaj   +1 more source

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