The effect of 1-hydroxyethylenediphosphonic acid on the kinetics and the mechanism of interaction of Mn3O4 with sulfuric acid solutions

The kinetics of interaction of Mn3O4 with sulfuric acid solutions and the effect of 1-hydroxyethyl-enediphosphonic acid (H5L) on this process are studied. It is found that, as the sulfuric acid concentration is increased from 0.1 to 5 N, the rate of disproportionation of Mn3O4 to MnO2 and Mn2+ ions decreases, whereas it increases with the concentration of Mn2+ ions. Upon addition of H5L, the complete dissolution of Mn3O4 occurs more rapidly. The reaction order with respect to the H+ and H3L2- ions is equal to +0.5 ± 0.1. A mechanism of promotion of dissolution of Mn3O4 by H5L is proposed.

Авторы
Kishkina N.A.1 , Gorichev I.G. 1 , Zaitsev B.E. 2 , Izotov A.D.3 , Dukhanin V.S.1
Редакторы
-
Издательство
-
Номер выпуска
4
Язык
Английский
Страницы
563-570
Статус
Опубликовано
Подразделение
-
DOI
-
Номер
-
Том
73
Год
1999
Организации
  • 1 Moscow Stt. Open Pedagogical Univ., Moscow, Russian Federation
  • 2 Russ. Univ. of Peoples' Friendship, ul. Miklukho-Maklaya 6, Moscow DSP, 117198, Russian Federation
  • 3 Kurnakov Inst. Gen. Inorg. Chem., Russian Academy of Sciences, Leninskii pr. 31, Moscow, 117907, Russian Federation
Ключевые слова
-
Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/563/