Results 271 to 280 of about 367,769 (301)

THERMODYNAMIC PROPERTIES OF THE DISSOLUTION OF FATTY ACID SALTS IN WATER*

Journal of Dispersion Science and Technology, 1998
The enthalpy, entropy and heat capacity change of the dissolution of calcium and barium laurates, myristates and palmitates were determined by reaction calorimetry and by solubility at different temperatures. Heat capacity change, due to water restructuring or iceberg formation, was found to increase with the chain length.
Kallay, Nikola, Hrust, Vesna, Begović, Tajana   +2 more
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Kinetic and thermodynamic study of the thorium phosphate–diphosphate dissolution

Journal of Nuclear Materials, 2000
The dissolution of the thorium phosphate-diphosphate (TPD), which was proposed for the actinides immobilization, was systematically studied as a function of several parameters such as surface, leaching flow, temperature acidity or basicity of the leachate and phosphate concentration.
Thomas, A.C., Dacheux, N., Le Coustumer, Philippe, Brandel, V., Genet, M.   +4 more
openaire   +2 more sources

Effect of Metal Nanoparticle Aggregate Structure on the Thermodynamics of Oxidative Dissolution

Langmuir, 2021
Here, we compare the electrochemical oxidation potential of 15 nm diameter citrate-stabilized Au NPs aggregated by acid (low pH) to those aggregated by tetrakis(hydroxymethyl) phosphonium chloride (THPC). For acid-induced aggregation, the solution changes to a blue-violet color, the localized surface plasmon resonance (LSPR) band of Au NPs at 520 nm ...
Dhruba K. Pattadar, Harikrishnan N. Nambiar, Stacy L. Allen, Jacek B. Jasinski, Francis P. Zamborini   +4 more
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Kinetic and Thermodynamic Studies of Silica Nanoparticle Dissolution

Chemistry of Materials, 2007
Small-angle X-ray scattering (SAXS) and microcalorimetry were used to study the dissolution of silica nanoparticles that serve as precursors in the synthesis of the pure-silica zeolite, silicalite-1. Temporal changes in nanoparticle size were monitored by SAXS to obtain radial dissolution rates on the order of 1 × 10-2 nm/min, 10 times greater than ...
Jeffrey D. Rimer, Olga Trofymluk, Alexandra Navrotsky, Raul F. Lobo, Dionisios G. Vlachos   +4 more
openaire   +1 more source

Dissolution enthalpies and the thermodynamic properties of sodium metaborates

Journal of Molecular Liquids, 2020
Abstract The thermodynamic properties including enthalpy, entropy and Gibbs free energy are important parameters, which can provide a theoretical basis for utilizing salt lake resources. In addition, the dissolution equilibrium constant (K), activity coefficient (γ) and osmotic coefficient (Φ) of inorganic salt solution, especially for sodium borate,
Fei Yuan, Yilin Zhang, Jiangtao Song, Long Li, Yafei Guo, Shiqiang Wang, Tianlong Deng   +6 more
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The dissolution of uranium oxides: Thermodynamic and kinetic investigations

Hydrometallurgy, 2016
Abstract This work investigates the dissolution of various uranium oxides in nitric acid medium and the most predominant occurring reaction was determined on the basis of the thermodynamic and kinetic studies. Six uranium oxides were dissolved and studied.
Belkacem Bensmain, Salah Chegrouche, Mahfoud Barkat, Abdelhamid Mellah, Djamel Nibou   +4 more
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Thermodynamics of ferrocene dissolution in water-methanol solutions

Russian Journal of General Chemistry, 2008
The polythermal solubility of ferrocene in water-methanol solutions in a wide range of their compositions was studied. Ferrocene solubility grows as temperature and methanol content increase. Thermodynamic functions of ferrocene transfer from water into water-methanol solutions were calculated.
V. A. Fedorov, V. E. Tetenkova, P. V. Fabinskii, A. V. Fedorova, F. A. Buryukin, V. P. Tverdokhlebov   +5 more
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Thermodynamics of the dissolution of crystalline L-methionine in water

Russian Journal of Physical Chemistry A, 2016
The enthalpies of dissolution of crystalline L-methionine in water and aqueous solutions of potasium hydroxide at 298.15 K are measured by means of direct calorimetry. The standard enthalpies of formation are calculated for L-methionine and products of its dissociation in aqueous solution.
A. I. Lytkin, V. V. Chernikov, O. N. Krutova, K. V. Damrina, I. A. Skvortsov   +4 more
openaire   +1 more source

Thermodynamics insights of lignin dissolution in deep eutectic solvents

International Journal of Biological Macromolecules
To develop a green solvent for lignin dissolution, the most fundamental aspects of its mechanism must be elucidated. Understanding the thermodynamic behaviors is of significant importance for designing novel deep eutectic solvents (DESs) to dissolve lignin.
Yang, Wang, Huan, Wang, Chuanyu, Yan, Weitao, Wang, Bingzheng, Jia, Yiting, Yao, Lan, Chen, Qilu, Hu, Zhimin, Xue   +8 more
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Dissolution Thermodynamics of 1,2,3-Triazole Nitrate in Water

Journal of Solution Chemistry, 2011
The enthalpies of dissolution of 1,2,3-triazole nitrate in water were measured using a RD496-2000 Calvet microcalorimeter at four different temperatures under atmospheric pressure. Differential enthalpies (Δdif H) and molar enthalpies (Δdiss H) of dissolution were determined.
Liang Xue, Fengqi Zhao, Xiaoling Xing, Zhiming Zhou, Kai Wang, Siyu Xu, Jianhua Yi, Rongzu Hu   +7 more
openaire   +1 more source