Results 1 to 10 of about 16,979 (127)

Exploring the Volatility, Phase Transitions, and Solubility Properties of Five Halogenated Benzaldehydes [PDF]

Molecules
Halogenated benzaldehydes possess unique chemical properties that render them valuable in pharmaceutical synthesis, pesticide formulation, and dye production. However, thorough thermodynamic data for these compounds remain scarce. This study aims to fill
Ana R. R. P. Almeida, Bruno D. A. Pinheiro, Gastón P. León, Bogdan Postolnyi, João P. Araújo, Manuel J. S. Monte   +5 more
doaj   +2 more sources

Thermal Characterization and Heat Capacities of Seven Polyphenols [PDF]

Molecules
Polyphenolic compounds are key elements in sectors such as pharmaceutics, cosmetics and food; thus, their physicochemical characterization is a vital task.
Iván Montenegro, Carmen Pérez, Begoña González, Ángeles Domínguez, Elena Gómez   +4 more
doaj   +2 more sources

Structure-property relationships in alkoxy substituted benzoates from experimental and computational thermochemistry

Chemical Thermodynamics and Thermal Analysis, 2023
The energetics of formation and the phase transitions for isomeric methyl and ethyl methoxy‑benzoates were studied. The vapour pressures of methyl 2‑methoxy-benzoate and methyl 4‑methoxy-benzoate were measured by transpiration method.
Sergey P. Verevkin, Ruslan N. Nagrimanov, Vladimir V. Turovtsev   +2 more
doaj   +1 more source

Nearest-Neighbour and Non-Nearest-Neighbour Non-Covalent Interactions between Substituents in the Aromatic Systems: Experimental and Theoretical Investigation of Functionally Substituted Benzophenones

Molecules, 2022
Benzophenone derivatives exhibit not only biological activity but also act as photo initiator and UV blocker. We carried out experimental and theoretical thermochemical studies of hydroxy- and methoxy-substituted benzophenones.
Artemiy A. Samarov, Stanislav O. Kondratev, Sergey P. Verevkin   +2 more
doaj   +1 more source

Thermodynamics of Reversible Hydrogen Storage: Are Methoxy-Substituted Biphenyls Better through Oxygen Functionality?

Hydrogen, 2023
The reversible hydrogenation/dehydrogenation of aromatic molecules, known as liquid organic hydrogen carriers, is considered as an attractive option for the safe storage and release of elemental hydrogen.
Sergey P. Verevkin, Artemiy A. Samarov, Sergey V. Vostrikov   +2 more
doaj   +1 more source

Calorimetric Studies on Chemically Delithiated LiNi_0.4Mn_0.4Co_0.2O₂: Investigation of Phase Transition, Gas Evolution and Enthalpy of Formation

Batteries, 2023
Li1.11(Ni0.4Mn0.4Co0.2)O2 powders were chemically delithiated by (NH4)2S2O8 oxidizer to obtain Lix(Ni0.4Mn0.4Co0.2)O2 powders. The thermal behavior of two delithiated specimens, Li0.76Ni0.41Mn0.42Co0.17O2.10 and Li0.48Ni0.38Mn0.46Co0.16O2.07, was studied
Wenjiao Zhao, Julian Gebauer, Thomas Bergfeldt, Magnus Rohde, Carlos Ziebert, Yong Du, Hans J. Seifert   +6 more
doaj   +1 more source

Modeling Heat Transport in Systems of Hydrate-Filled Sediments Using Residual Thermodynamics and Classical Nucleation Theory

Applied Sciences, 2021
As in any other phase transition, hydrate phase transition kinetics involves an implicit coupling of phase transition thermodynamic control and the associated dynamics of mass and heat transport.
Mojdeh Zarifi, Bjørn Kvamme, Tatiana Kuznetsova   +2 more
doaj   +1 more source

Design of Deep Eutectic Systems: Plastic Crystalline Materials as Constituents

Molecules, 2022
Deep eutectic solvents (DESs) are a class of green and tunable solvents that can be formed by mixing constituents having very low melting entropies and enthalpies.
Ahmad Alhadid, Sahar Nasrallah, Liudmila Mokrushina, Mirjana Minceva   +3 more
doaj   +1 more source

Phase Transitions in Higher-Melting Ionic Liquids: Thermal Storage Materials or Liquid Crystals?

Chemical Engineering Transactions, 2018
To assess the application potential of a material in thermal energy storage, the knowledge of their thermophysical properties is of key importance. Specifically, an efficient material has to show, among others, large enthalpies of phase change and a ...
Magdalena Bendova, Maja Canji, Zdenek Wagner, Nikola Zdolsek, Francois Quirion   +4 more
doaj   +1 more source

Pressure-induced phase transition in cubic Yb2O3 and phase transition enthalpies

AIP Advances, 2023
The high pressure structural evolution of cubic Yb2O3 has been studied using in situ synchrotron angle dispersive x-ray diffraction in combination with diamond anvil cell techniques up to 44.1 GPa.
Sheng Jiang, Jichao Zhang, Lingrui Wang, Chuanlong Lin, Shuai Yan, Jing Liu, Aiguo Li, Renzhong Tai   +7 more
doaj   +1 more source