The revised potential – pH diagram of Sc – H2O system

Автор: Nikolaychuk P.A.
Журнал: Научные ведомости Белгородского государственного университета. Серия Естественные науки
Том: 37
Номер: 25 (246)
Год издания: 2016
Первая страница: 70
Последняя страница: 87
Аннотация: The thermodynamic data on the standard Gibbs energies of formation of scandium solid and aqueous species were collected and systematised. The speciation diagram for the dimerisation reaction 2ScOH 2+ (aq) ⇌ Sc2(OH)2 4+ (aq) was plotted. The equilibria between various hydrolysed scandium (III) species in an aqueous solution were discussed. The potential–pH diagrams of system Sc–H2O at 25°C, air pressure of 1 bar and various activities of ions in a solution were plotted. The influence of possible electrochemical formation of scandium hydride and the effect of non-stoichiometry of scandium sesquioxide on the corrosion-electrochemical properties of scandium were discussed.
Добавил в систему: Николайчук Павел Анатольевич

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