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Effect of the anionic composition and pH on the dissolution kinetics of chromium(III) oxide and chromium(III) hydroxide oxide in acids

Authors
  • Dorovskikh, I. V.1
  • Gorichev, I. G.1
  • Batrakov, V. V.1
  • Kurilkin, V. V.2
  • Izotov, A. D.3
  • 1 Moscow State Pedagogical University, Malaya Pirogovskaya ul. 1, Moscow, 119882, Russia , Moscow (Russia)
  • 2 Russian University of Peoples’ Friendship, ul. Miklukho-Maklaya 6, Moscow, 117198, Russia , Moscow (Russia)
  • 3 Russian Academy of Sciences, Kurnakov Institute of General and Inorganic Chemistry, Leninskii pr. 31, Moscow, 119991, Russia , Moscow (Russia)
Type
Published Article
Journal
Russian Journal of Inorganic Chemistry
Publisher
Nauka/Interperiodica
Publication Date
Jan 01, 2006
Volume
51
Issue
1
Pages
143–151
Identifiers
DOI: 10.1134/S0036023606010220
Source
Springer Nature
Keywords
License
Yellow

Abstract

Based on an experimental investigation of the effects of the pH and anionic composition on the dissolution rate of chromium(III) oxide α-Cr2O3 and chromium(III) hydroxide oxide α-CrOOH and subsequent modeling of the process, it is demonstrated that, depending on the pH, the rate-controlling stage of the dissolution is the CrOH2+ or CrHSO42+ sobulization.

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