Article
Thermodynamics
Jia-Yuan Zhao, Ning Ren, Jian-Jun Zhang
Summary: Two 2D lanthanide coordination polymers were successfully prepared through conventional solution method, and their structures and thermodynamic properties were identified by various analytical techniques.
JOURNAL OF CHEMICAL THERMODYNAMICS
(2021)
Article
Multidisciplinary Sciences
Frank Yeh, Andres Jara-Oseguera, Richard W. Aldrich
Summary: Temperature influences dynamics and state-equilibrium distributions in molecular processes, and animals have evolved sensory ion channels to detect temperature changes with remarkable sensitivity. The molecular mechanisms behind the temperature-sensitivity of these channels and the adaptations that make them heat- or cold-activated are not well understood. This study challenges the assumption that the heat capacity difference (ACp) is constant by investigating the consequences of a temperature-dependent ACp on ion channel equilibrium and proposes new possibilities for ion channel gating models.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Chemistry, Inorganic & Nuclear
Chen-Lu Wang, Su-Ling Xu, Ze-Jun Liu, Ning Ren, Jian-Jun Zhang
Summary: Two new complexes were successfully synthesized and characterized, and their properties were studied.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
James T. Larson, Katelyn D. Wix, Banghao Chen, Susan E. Latturner
Summary: Anthracene decomposition in metal flux reactions provides carbon and hydrogen interstitials for product formation. Reactions of anthracene with La/Ni and Yb/Cu fluxes produced new rare earth carbide hydrides. The presence of hydrogen in LaCH (x) was confirmed by H-1 MAS-NMR, and possible hydride sites were identified through X-ray diffraction studies. Anthracene reactions in Ln/T eutectic mixtures (Ln = La, Yb; T = Ni, Cu) resulted in the formation of complex lanthanide carbide hydride phases.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Chen-Lu Wang, Jin-Ying Zhang, Xiao-Yan Li, Ning Ren, Jian-Jun Zhang
Summary: Five lanthanide complexes with polydentate coordination were synthesized and their structures and properties were studied in detail, including fluorescence and heat capacity properties, as well as the explanation of the fluorescence enhancement mechanism.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Thermodynamics
Ji-Peng Luo, Hui Zheng, Xiao-Qin Wang, Nan Yin, Yin-Shan Meng, Zhi-Cheng Tan, Quan Shi
Summary: This study reports the design, synthesis, structure, and property of four complexes. The magnetic property characterization reveals the presence of antiferromagnetic interactions in three of the complexes, which exhibit Schottky anomalies at low temperature. The thermodynamic functions and the responses of heat capacity to the magnetic field have been determined.
JOURNAL OF CHEMICAL THERMODYNAMICS
(2022)
Article
Materials Science, Ceramics
Guishang Pei, Junyi Xiang, In-Ho Jung, Mengjiao Jiao, Zhuoyang Li, Xuewei Lv
Summary: A Ca5Mg4V6O24 compound was synthesized through solid-state roasting routes and its crystal structure and thermodynamic properties were determined. The compound crystallizes in cubic space group Ia3d with a = 12.442 +/- 0.001 angstrom. X-ray photoelectron spectroscopy confirmed the presence of vanadium in the +5 state. The melting point of Ca5Mg4V6O24 was found to be 1442 K. The molar heat capacity (374 J mol K-1) and entropy (688.2 J mol K-1) at 298.15 K were determined using physical properties measurement system and simultaneous thermal analyzer for the first time. The solubility of Ca5Mg4V6O24 in water at different temperatures was measured, and its dissolution behavior in sulfuric acid and kinetics were experimentally established.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Thermodynamics
Sarah N. Elliott, Kevin B. Moore, Andreas V. Copan, Yuri Georgievskii, Murat Keceli, Kieran P. Somers, Manik K. Ghosh, Henry J. Curran, Stephen J. Klippenstein
Summary: This article evaluates the thermodynamic properties of various species in a set of fuels using advanced computational schemes. It finds that the thermochemistry of the main species strongly affects key combustion properties and highlights significant uncertainties in current estimates. The proposed computational procedure, STAR-1D, shows promising accuracy and provides a reliable database for optimizing combustion systems.
COMBUSTION AND FLAME
(2023)
Article
Engineering, Aerospace
Xinying Jiang, Meng Liu, Hao Wu, Yonggui Zheng, Junjun Zhuang
Summary: Research has shown that the angle of attack has a significant impact on temperature distribution in hypersonic vehicles, and the rear side of the leeward surface is identified as a low-temperature region less affected by flight conditions which can serve as a heat sink. By utilizing this region as a heat sink to dissipate heat, a higher heat dissipation capacity can be achieved.
Article
Chemistry, Physical
Artur P. Durajski, Radoslaw Szczesniak
Summary: The study found that carbonaceous lanthanum hydride LaC2H8 can exhibit superconductivity under high pressure, with a relatively high superconducting critical temperature.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Thermodynamics
Du Dan-Dan, Ning Ren, Zhang Jian-Jun
Summary: The reactions of 2,4-difluombenzoic acid, 5,5'-dimethyl-2,2'-bipyridine with Ln(NO3)(3)center dot 6H(2)O resulted in the formation of two isostructural binuclear complexes. The X-Ray crystal structures confirmed that each metal ion resided in distorted triangular prism geometry and both of them had triclinic characteristics with P (1) over bar space group. The complexes existed as one dimensional chain which was further assembled into two-dimensional supramolecular framework via hydrogen bonds.
THERMOCHIMICA ACTA
(2021)
Article
Materials Science, Ceramics
Guishang Pei, Junyi Xiang, Qingyun Huang, Xuewei Lv
Summary: A double pyrovanadate CaMgV2O7 sample was synthesized via a solid-state route, and its formation pathways and thermodynamic properties were investigated. The results provide valuable information for the establishment of a thermodynamic database of the CaO-MgO-V2O5 system.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Inorganic & Nuclear
De-Gang Ke, Sheng-Li Huang, Guo-Yu Yang
Summary: In this study, three polyoxometalate-based metal-organic frameworks were synthesized through the thermal reaction of pyridyl-Anderson polyoxometalate linker and lanthanide ions. These frameworks exhibited excellent photocatalytic sulfide oxidation performance with sulfoxide selectivity in the presence of [Ru(bpy)3]2+ photosensitizer.
INORGANIC CHEMISTRY
(2022)
Article
Thermodynamics
Joseph C. Bloxham, Neil F. Giles, Thomas A. Knotts, W. Vincent Wilding
Summary: The heat capacity of liquids is an important property in designing chemical processes. This paper introduces an upper limit for heat capacity using the n-alkane family, which can help improve the accuracy and confidence in predicting liquid heat capacity, and has various applications in engineering problems.
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2022)
Article
Green & Sustainable Science & Technology
I Carvajal-Mariscal, J. E. De Leon-Ruiz, J. M. Belman-Flores, A. Salazar-Huerta
Summary: An experimental study was conducted to design and test the performance of a waste-heat recovery device for a brewing process. The results showed that a thermosyphon-based heat exchanger with a 40:60 length ratio can successfully recover and reuse residual energy without requiring modifications or additional energy input to the existing equipment.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
