Effect of the anionic composition and pH on the dissolution kinetics of chromium(III) oxide and chromium(III) hydroxide oxide in acids |
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| Authors: | I V Dorovskikh I G Gorichev V V Batrakov V V Kurilkin A D Izotov |
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| Institution: | (1) Moscow State Pedagogical University, Malaya Pirogovskaya ul. 1, Moscow, 119882, Russia;(2) Russian University of Peoples’ Friendship, ul. Miklukho-Maklaya 6, Moscow, 117198, Russia;(3) Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia |
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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 CrHSO
4
2+
sobulization. |
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| Keywords: | |
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