Thermodynamic analysis of the self-propagating high-temperature synthesis of scandium and lutetium oxides nanopowders

摘要

Using the method of valence states of atoms in a chemical compound, we have calculated the standard enthalpies of formation for the reaction systems lutetium nitrate-lutetium acetate, scandium nitrate-scandium acetate, scandium nitrate-scandium acetylacetonate, and scandium nitrate-glycine. To optimize the composition of precursors for the self-propagating high-temperature synthesis of Sc2O3 and Lu2O3 nanopowders, we have analyzed the influence of the nature of the fuel and the oxidant to fuel ratio in the starting mixture on the adiabatic temperature and thermodynamically substantiated composition of reaction products.