A vibrational spectroscopy and XPS investigation of the interaction of hydroxamate reagents on copper oxide minerals / G.A. Hope in Minerals engineering, Vol. 23 N° 11-13 (Octobre 2010)  

Public ISBD [article]  inMinerals engineering > Vol. 23 N° 11-13 (Octobre 2010) . - pp. 952–959 Titre : A vibrational spectroscopy and XPS investigation of the interaction of hydroxamate reagents on copper oxide minerals Type de document : texte imprimé Auteurs : G.A. Hope, Auteur ; R. Woods, Auteur ; G.K. Parker, Auteur Année de publication : 2011 Article en page(s) : pp. 952–959 Note générale : Génie Minier Langues : Anglais (eng) Mots-clés : Alkyl hydroxamates Mineral processing Flotation collectors Oxide ores Résumé : Vibrational spectroscopy and X-ray photoelectron spectroscopy (XPS) studies have been carried out to investigate the interaction of n-octanohydroxamic acid, acetohydroxamic acid and potassium hydrogen n-octanohydroxamate with a copper electrode, malachite and cuprite. Bulk analysis, XPS, Raman and FT-IR have been used to characterise the reactants, surface products and the bulk copper compounds. Copper aceto- and n-octanohydroxamates have been shown to have a 1:1 stoichiometry. XPS results for cuprite and malachite minerals show the formation of a layer of copper n-octanohydroxamate under the conditions investigated. Surface enhanced Raman scattering (SERS) studies at gold coated malachite mineral surfaces have been attempted with acetohydroxamic acid, the acid potassium salt of n-octanohydroxamic acid and the commercial collector AM28. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687510000683 [article] A vibrational spectroscopy and XPS investigation of the interaction of hydroxamate reagents on copper oxide minerals [texte imprimé] / G.A. Hope, Auteur ; R. Woods, Auteur ; G.K. Parker, Auteur . - 2011 . - pp. 952–959. Génie Minier Langues : Anglais (eng) in Minerals engineering > Vol. 23 N° 11-13 (Octobre 2010) . - pp. 952–959 Mots-clés : Alkyl hydroxamates Mineral processing Flotation collectors Oxide ores Résumé : Vibrational spectroscopy and X-ray photoelectron spectroscopy (XPS) studies have been carried out to investigate the interaction of n-octanohydroxamic acid, acetohydroxamic acid and potassium hydrogen n-octanohydroxamate with a copper electrode, malachite and cuprite. Bulk analysis, XPS, Raman and FT-IR have been used to characterise the reactants, surface products and the bulk copper compounds. Copper aceto- and n-octanohydroxamates have been shown to have a 1:1 stoichiometry. XPS results for cuprite and malachite minerals show the formation of a layer of copper n-octanohydroxamate under the conditions investigated. Surface enhanced Raman scattering (SERS) studies at gold coated malachite mineral surfaces have been attempted with acetohydroxamic acid, the acid potassium salt of n-octanohydroxamic acid and the commercial collector AM28. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687510000683

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