The reactivity of Mn2O3 and late rare-earth sesquioxides in alkaline aqueous solution affords a highyield formation of rare-earth manganites, LnMnO3 (Ln 1⁄4 Ho–Lu and Y). The yield of the products depends significantly on the pH, which determines the solubility of the manganese cation, and reaction temperature, which regulates the decomposition of the insoluble rare-earth trihydroxide, Ln(OH)3,...

Widening the use of renewable sources requires more efficient energy storage systems to overcome inherent intermittence solar energy. In this respect, thermal coupled concentrated power represents an inexpensive technology achieve that goal. particular, reversible thermochemical reactions is promising due a higher density if compared with commercial sensible heat on molten salts. However, some ...

Mn3O4 and Mn2O3 were synthesized by potentiostatic electrodeposition from a de-aerated manganese acetate sodium sulfate electrolytic bath, followed annealing. The parameters (including applied potential, precursor concentration, pH, temperature) the thermal treatment conditions investigated to obtain best control over microstructure stoichiometry of oxides. We found that voltage is key paramete...