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Claes, P.; Mernier, F.; Wery, L.; Glibert, J.
Electrochimica acta, 01/1999, Letnik: 44, Številka: 23Journal Article
B 2O 3 interacts with hydroxide melts and yields water and a mixture of BO 3− 3 and BO 5− 4 ions. In this work, the ratio of the concentrations of these two ionic species has been determined at 623 K as a function of the composition of mixtures of sodium and potassium hydroxides in a range extending from 24 to 100 mol% NaOH. The ratio C(BO 5− 4)/C(BO 3− 3) has a maximum value for the 24 mol% NaOH mixture and a minimum value for the 50 mol% mixture. This composition dependence of the stoichiometry of the dissolved boron species was interpreted in relation to changes of the acidobasic properties of hydroxide melts.}
