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Title

The use of concentrated solar energy for the reduction of CuO in H2

AuthorsArenas, M. A.; Padilla, Isabel; Robla, J. I.; Vázquez, A. J.; López-Delgado, Aurora
KeywordsHydrogen
Copper
Concentrated solar energy
Copper oxide reduction
Issue Date2019
PublisherElsevier
CitationSolar Energy 180: 640-647 (2019)
AbstractThe 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.
Publisher version (URL)https://doi.org/10.1016/j.solener.2019.01.064
URIhttp://hdl.handle.net/10261/179671
Identifiersdoi: 10.1016/j.solener.2019.01.064
issn: 0038-092X
Appears in Collections:(CENIM) Artículos
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