Interaction between lanthanide cuprates and hydrochloric acid |
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| Authors: | A D Izotov E Yu Nevskaya O A Egorova I G Gorichev |
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| Institution: | 1.Kurnakov Institute of General and Inorganic Chemistry,Russian Academy of Sciences,Moscow,Russia;2.Russian University of Peoples’ Friendship,Moscow,Russia;3.Moscow State Pedagogical University,Moscow,Russia |
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| Abstract: | The interaction between lanthanide cuprates Ln2CuO4 − δ (Ln = La-Gd) and hydrochloric acid is investigated. The effects of solution pH, temperature, and the nature of the rare-earth
element ion on dissolution is studied. The formal order of the reaction in the acid is the same for all the substances under
study and is 0.53 ± 0.05. The effective activation energy for the process is 40 ± 0.5 kJ/mol. A scheme of Ln2CuO4 − δ interaction with HCl is proposed. |
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