| Titre : | A vibrational spectroscopy and XPS investigation of the interaction of hydroxamate reagents on copper oxide minerals (2011) |
| Auteurs : | G.A. Hope, Auteur ; R. Woods, Auteur ; G.K. Parker, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Minerals engineering (Vol. 23 N° 11-13, Octobre 2010) |
| Article en page(s) : | pp. 952–959 |
| Note générale : | Génie Minier |
| Langues : | Anglais |
| Tags : | 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 |
