Summary
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1.
The system Cu(OH)2-H2O2-H2O has been studied by a solubility method at temperatures of -36°, -20°, 0° and 20°.
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2.
In addition to the peroxidic compound of copper formerly known, CuO2 · H2O, the existence of a new compound with a higher content of active oxygen, CuO2 · H2O2 · H2O has been established, this being formed at higher concentrations of hydrogen peroxide in the liquid phase.
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3.
A polythermal diagram constructed for the temperature range -36° to +20°, giving the limits of equilibrium existence of the solid phases ice, cupric hydroxide, CuO2 · H2O, and CuO2 · H2O2 · H2O, has been obtained.
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4.
The solid phases of peroxide type obtained have been submitted to additional thermal studies. The compound CuO2· H2O2 · H2O has served as a basis for the synthesis of anhydrous cupric peroxide, CuO2.
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Makarov, S.Z., Arnol'd, T.I., Stasevich, N.N. et al. An investigation of systems containing concentrated hydrogen peroxide. Russ Chem Bull 9, 1789–1795 (1960). https://doi.org/10.1007/BF00907733
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DOI: https://doi.org/10.1007/BF00907733