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

I. V. Dorovskikh; I. G. Gorichev; V. V. Batrakov; V. V. Kurilkin; A. D. Izotov

doi:10.1134/S0036023606010220

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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

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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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