Copper(I) oxide – Knowledge and References

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Theoretical Aspects of Simultaneous Thermogravimetric Analysis (TGA) and Differential Thermal Analysis (DTA)/Differential Scanning Calorimetry (DSC)

Published in Jose James, K.P. Pramoda, Sabu Thomas, Polymers and Multicomponent Polymeric Systems, 2019

Siew Sand Chee, Mohammad Jawaid, Mohamed Thariq

Reactions accompanied by a significant increase in mass are nearly always reactions with oxygen and are strongly exothermic. An example of this is the corrosion of metals such as iron and copper (Figure 2.20). In air, iron oxidizes at about 300°C, producing a mixture of hematite and magnetite. The mass increases by about 40%. In the DSC curve, the oxidation of iron appears as a broad exothermic peak. Copper oxidizes above 280°C to copper(II) oxide, CuO, which then undergoes reduction to copper(I) oxide (Cu2O) above 1,000°C. The DSC curve also exhibits a broad exothermic peak during the oxidation process and a relatively sharp endothermic peak due to the reduction reaction. The DSC curve of copper measured under inert conditions shows the melting peak at 1,083°C.

Municipal Solid Waste Leachates Destruction and Metals Recovery by Supercritical Water Oxidation

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Journal Information

Published in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2018

D. A. Zou, Y. Chi, J. Dong, F. Wang, M. J. Ni

Cu2O in the solid products may be formed through the partial decomposition of Cu(OH)x (reaction 8) generated from copper nitrate according to the pathway (7), and then cuprous oxide (copper(I) oxide, Cu2O) can convert to cupric oxide (copper(II) oxide, CuO) by oxidation reaction under higher temperature 500°C, which is supported by X-ray diffraction (XRD) result.