Electrochemical properties and dissolution of UPd3 in nitric acid solutions
- Авторы: Zavarzin S.1, Maslennikov A.2, Gedgovd K.3, Bulatov G.3, Vlasova I.4
-
Учреждения:
- Leading Research Institute of Rosatom State Corporation for Chemical Technologies
- Bochvar High-Tech Research Institute of Inorganic Materials
- Frumkin Institute of Physical Chemistry and Electrochemistry
- Moscow State University
- Выпуск: Том 58, № 5 (2016)
- Страницы: 466-472
- Раздел: Article
- URL: https://journals.rcsi.science/1066-3622/article/view/223496
- DOI: https://doi.org/10.1134/S1066362216050040
- ID: 223496
Цитировать
Аннотация
Electrochemical properties of the intermetallic compound UPd3 in 0.5–8 M HNO3 solutions were studied by linear voltammetry. In 0.5–2 M HNO3 solutions, the UPd3 surface is in the passive state. At HNO3 concentrations exceeding 4 M, the alloy passivation was not observed. The previously unknown electrochemical characteristics of UPd3 in nitric acid solutions were obtained using the Tafel equation. The values of Е(i = 0) and vcorr increased from 39 mV and 38 μg cm–2 h–1 in 0.5 M HNO3 to 821 mV and 11 mg cm–2 h–1 in 8 M HNO3, respectively. Dissolution experiments have shown that UPd3 can dissolve in HNO3 solutions of concentration exceeding 4 M at room temperature. In 8 M HNO3, the dissolution rate can reach 17 mg cm–2 h–1 at 25°С, with the dissolution being virtually equimolar and accelerating with time.
Ключевые слова
Об авторах
S. Zavarzin
Leading Research Institute of Rosatom State Corporation for Chemical Technologies
Автор, ответственный за переписку.
Email: info@vniiht.ru
Россия, Kashirskoe sh. 33, Moscow, 115409
A. Maslennikov
Bochvar High-Tech Research Institute of Inorganic Materials
Email: info@vniiht.ru
Россия, ul. Rogova 5a, Moscow, 123098
K. Gedgovd
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: info@vniiht.ru
Россия, Leninskii pr. 31, korp. 4, Moscow, 199071
G. Bulatov
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: info@vniiht.ru
Россия, Leninskii pr. 31, korp. 4, Moscow, 199071
I. Vlasova
Moscow State University
Email: info@vniiht.ru
Россия, Moscow