Abstract
Powdered mixtures of aluminum with 20 wt % of organic components were subjected to plastic deformation under a pressure of 0.5–4.0 GPa on an anvil-type high-pressure apparatus and then investigated by thermogravimetry and DSC. In deformed mixtures in the T-range of 30–500°C, there was a decrease in mass associated with the decomposition of organic components, while there was an increase in mass associated with the oxidation of aluminum in the T-range of 500–800°C. The mass changes were accompanied by exothermic effects. The enthalpies of exoeffects in the high-temperature range were always higher than in the low-temperature range. The magnitudes of exothermic effects depended on the content of carbon and oxygen in organic molecules; in a series of organic acids, they depended on the pH of acids.
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Funding
This work was carried out at with the support of a subsidy allocated by the Institute of Chemical Physics of the Russian Academy of Sciences for the implementation of a state order (topic 0082-2014-0015 “Development of a Methodology for the Synthesis of New High Polymers, Oligomers, and Macromonomers and Study of the Effect of the Structure of Polymers on Their Properties, AAAA-A17-117032750201-9), as well as within the framework of a state order to the Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences “Physicochemistry of Functional Materials Based on Architectural Ensembles of Metal–Oxide Nanostructures, Multilayer Nanoparticles, and Film Nanocomposites” (R&D registration no. AAAA-A19-119031490082-6).
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Zhorin, V.A., Kiselev, M.R. & Kotenev, V.A. Thermogravimetric and DSC Studies of Mixtures of Aluminum Powder with Low-Molecular Organic Compounds after Plastic Deformation under High Pressure. Prot Met Phys Chem Surf 56, 957–964 (2020). https://doi.org/10.1134/S2070205120050317
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DOI: https://doi.org/10.1134/S2070205120050317