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- W2053677036 abstract "Through simple thermodynamic considerations, the metal oxides reduction reaction in polyol medium (ethylene glycol) has been addressed with the assumptions that the reaction takes place at the boiling point of the alcohol, and that the polyol is totally oxidized with formation of CO2 and H2O. By considering the initial (MOx+ethylene glycol) and final (M+CO2+H2O) states, we estimated the Gibbs free energies (ΔGred) for the reduction of numerous oxides, and found a good correlation with the experimental results. Without any exception, oxides leading to metallic powder when reacted in boiling polyol medium have a negative calculated ΔGred. However, a few oxides with negative calculated ΔGred could not be reduced to metal, likely for kinetics limitations and/or solubility issues. This strategy has been extended with similar success to both hydroxide precursors and other alcohols having longer backbones (e.g., glycerol). Finally, we show that this basic thermodynamic approach opens new insights for the synthesis of alloys, obviously represents a useful prediction tool for the preparation of metals, and could be easily extended to the preparation of oxides." @default.
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- W2053677036 date "2000-11-01" @default.
- W2053677036 modified "2023-10-01" @default.
- W2053677036 title "Preparation of Metallic Powders and Alloys in Polyol Media: A Thermodynamic Approach" @default.
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- W2053677036 doi "https://doi.org/10.1006/jssc.2000.8802" @default.
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