Results 11 to 20 of about 40,153 (337)

Thermochemical Study of 1-Methylhydantoin

open access: yesMolecules, 2022
Using static bomb combustion calorimetry, the combustion energy of 1-methylhydantoin was obtained, from which the standard molar enthalpy of formation of the crystalline phase at T = 298.15 K of the compound studied was calculated.
Juan M. Ledo   +3 more
doaj   +1 more source

Impact of Ni on the thermophysical and thermodynamic properties of Fe–C–Ni based alloys

open access: yesJournal of Materials Research and Technology, 2022
Three model alloys based on Fe-C-Ni were studied containing carbon between 0.338 and 0.382 wt. % and nickel between 1.084 and 4.478 wt. %. Phase transition temperatures, heat capacity, enthalpy change, heat of fusion, coefficient of thermal expansion ...
Ľubomíra Drozdová   +8 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

Synthesis of Lauric-Myristic Acid/Activated Carbon Composite as a New Shape-Stabilized Energy Storage Material

open access: yesMedžiagotyra, 2022
In this work, a new composite phase change material (CPCM) with lauric-myristic acid (LA-MA) eutectic as PCM and activated carbon (AC) was used as supporting material with four different mass ratios of 5.0:5.0, 5.5:4.5, 6.0:4.0, and 6.5:3.5, respectively.
Yanghua Chen   +3 more
doaj   +1 more source

Phase transitions properties of N,N-dimethyl-4-nitroaniline

open access: yesU.Porto Journal of Engineering, 2023
The present work reports an experimental study aiming to determine several thermodynamic properties of fusion and sublimation of the chromophore N,N-dimethyl-4-nitroaniline.
Bruno D. A. Pinheiro   +2 more
doaj   +1 more source

Solubility improvement of progesterone from solid dispersions prepared by solvent evaporation and co-milling [PDF]

open access: yes, 2020
The aim of this contribution was to evaluate the impact of processing methods and polymeric carriers on the physicochemical properties of solid dispersions of the poorly soluble drug progesterone (PG). Five polymers: hydroxypropyl methylcellulose (HPMC),
Al-Obaidi, Hisham   +3 more
core   +1 more source

Thermal Characterization of Binary Calcium-Lithium Chloride Salts for Thermal Energy Storage at High Temperature

open access: yesEnergies, 2023
Due to their excellent thermophysical properties and high stability, inorganic salts and Forsalt mixtures are considered promising thermal energy storage materials for applications operating at high temperatures. A mixture of binary salts, such as CaCl2 (
Naveed Hassan   +4 more
doaj   +1 more source

Defying decomposition: the curious case of choline chloride

open access: yesNature Communications, 2023
Chemists aim to meet modern sustainability, health, and safety requirements by replacing conventional solvents with deep eutectic solvents (DESs). Through large melting point depressions, DESs may incorporate renewable solids in task-specific liquids ...
Adriaan van den Bruinhorst   +5 more
doaj   +1 more source

Estimating fusion properties for functionalised acids [PDF]

open access: yesAtmospheric Chemistry and Physics, 2011
Multicomponent organic aerosol (OA) is likely to be liquid, or partially liquid. Hence, to describe the partitioning of these components, their liquid vapour pressure is desired. Functionalised acids (e.g. diacids) can be a significant part of OA.
S. Compernolle   +2 more
doaj   +1 more source

Carbides and Nitrides of Zirconium and Hafnium. [PDF]

open access: yes, 2019
Among transition metal carbides and nitrides, zirconium, and hafnium compounds are the most stable and have the highest melting temperatures. Here we review published data on phases and phase equilibria in Hf-Zr-C-N-O system, from experiment and ab ...
Hong, Qi-Jun   +3 more
core   +1 more source

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