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Bare, S.R., Kelly, S.D., Vila, F.D., Boldingh, E., Karapetrova, E., Kas, J., Mickelson, G.E., Modika, F.S., Yang, N. and Rehr, J.J. (2011) Experimental (XAS, STEM, TPR and XPS) and Theoretical (DFT) Characterization of Supported Rhenium Catalysts. Journal of Physical Chemistry C, 115, 5740-5755. http://dx.doi.org/10.1021/jp1105218

has been cited by the following article:

• TITLE: Towards the Recovery of By-Product Metals from Mine Wastes: An X-Ray Absorption Spectroscopy Study on the Binding State of Rhenium in Debris from a Centennial Iberian Pyrite Belt Mine

  AUTHORS: Maria-Ondina Figueiredo, Teresa Pereira da Silva, João Pedro Veiga, Daniel de Oliveira, Maria João Batista

  KEYWORDS: Mine Waste Materials By-Products; Iberian Pyrite Belt; Rhenium; XANES; Re L3-Edge

  JOURNAL NAME: Journal of Minerals and Materials Characterization and Engineering, Vol.2 No.2, March 24, 2014

  ABSTRACT: Rhenium is a very scarce element, occurring in the Earth's crust mainly carried by molybdenite (MoS2). Due to a very low availability comparative to actual industrial demand, rhenium is nowadays one of the most expensive mineral commodities and an increased interest is focused on ex- ploring residues resulting from a long-term mining, particularly of sulphide ore deposits. It is therefore noteworthy to assign the presence of rhenium (in a concentration up to 3 ppm) in the waste materials from the old sulphur factory at the abandoned mine of Sao Domingos (Iberian Pyrite Belt, Southeast Portugal), exploited since the Roman occupation of Iberia. Aiming at a potential sustainable recovery of rhenium as a by-product, X-ray near-edge absorption spectroscopy (XANES) was applied to clarify the Re-binding and mode of occurrence by comparing Re L3-edge XANES spectra obtained from mine waste samples (previously fully characterized by X-ray laboratory techniques) with similar spectra collected from Re-rich molybdenites (Mo1-xRexS2) and from Re-O model compounds configuring various valences and coordination environments of rhenium ions. Obtained results are commented, ruling out a possible Re-S binding and rather conforming with the binding of rhenium to oxygen in the analysed mine waste materials.