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Chemical Speciation of Iron and Cobalt Dopants in an Industrial Nickel Oxide System

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dc.contributor.advisor Jiang, De-Tong Sacchetti, Andrew 2019-05-08T13:36:33Z 2019-05-08T13:36:33Z 2019-04 2019-04-24 2019-05-08
dc.description.abstract The work presented is an X-Ray Absorption Fine Structure (XAFS) investigation into the speciation of cobalt (Co) and iron (Fe) dopants in Vale-INCO’s industrial doubly doped nickel oxide (NiO) system. The goal of the XAFS investigation was to reveal the local atomic structure(s) and species of the dopants. This information is a pre-requisite for investigating possible effects each respective dopant may have on Vale-INCO’s extraction yield of Nickel (Ni) from their NiO feed materials. This study utilized powder x-ray diffraction (PXRD), x-ray absorption near edge structure (XANES) and extended x-ray absorption fine structure (EXAFS) experimental techniques respectively. It was determined from the XANES and EXAFS investigations that Co2+ is substitutional for Ni2+ with a locally compression of its octahedron. While the XANES investigation revealed that the iron dopant present is a mixed valence of Fe2+ and Fe3+. en_US
dc.language.iso en en_US
dc.publisher University of Guelph en_US
dc.rights Attribution-NoDerivatives 4.0 International *
dc.rights.uri *
dc.subject X-Ray Absorption Spectroscopy en_US
dc.subject X-Ray Absorption Fine Structure en_US
dc.subject Experimental Condensed Matter Physics en_US
dc.subject Materials Science en_US
dc.subject Synchrotron Radiation en_US
dc.subject Transition Metal Dopants in Doubly Doped NiO en_US
dc.subject X-Ray Absorption Near Edge Spectroscopy en_US
dc.subject Chemical Speciation en_US
dc.subject Local Atomic Structure en_US
dc.title Chemical Speciation of Iron and Cobalt Dopants in an Industrial Nickel Oxide System en_US
dc.type Thesis en_US Physics en_US Master of Science en_US Department of Physics en_US University of Guelph en_US

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Attribution-NoDerivatives 4.0 International Except where otherwise noted, this item's license is described as Attribution-NoDerivatives 4.0 International