The use of concentrated solar energy for the reduction of CuO in H2
2019
Arenas, M. A. | Padilla, Isabel | Robla, J. I. | Vázquez, Alfonso J. | López-Delgado, Aurora | Consejo Superior de Investigaciones Científicas (España) | European Commission | Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
The reduction of copper (II) oxide was carried out under concentrated solar radiation in a stream of gaseous mixture 5/95 v/v H/N in a 1.5 kW thermal power vertical axis parabolic concentrator at the PROMES-CNRS solar facility (Odeillo-Font Romeu, France). Experiments were performed using a commercial oxide in two different forms, powdered and compacted specimens. The reduction of CuO to elemental Cu was more effective for compacted specimen yielding a dendrite microstructured metallic copper with an electrochemical behavior similar to that exhibited by the commercial metal. In the case of powdered specimen, a composite metal/oxide (Cu/CuO) block was obtained as a macroporous material. The reduction process of CuO under concentrated solar energy tracks through the formation of CuO as the only intermediate phase, which was evidenced by X-ray diffraction and scanning electron microscopy.
Mostrar más [+] Menos [-]Authors thank “The European Solar Research Infrastructure for Concentrated Solar Power SFERA-II” (EU.DG RTD’s Programme) for funding the project CLean environmentAlly Metallurgy Processes (CLAMP-P1502260113) and CSIC for funding the project PIE201550E012.
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