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Electron spin resonance based investigations of copper doped zeolites as selective catalytic reduction catalysts for deNOx applications
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Sagar, Viral. Electron spin resonance based investigations of copper doped zeolites as selective catalytic reduction catalysts for deNOx applications. Retrieved from https://doi.org/doi:10.7282/T3DN4717

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TitleElectron spin resonance based investigations of copper doped zeolites as selective catalytic reduction catalysts for deNOx applications
NameSagar, Viral (author); Dismukes, Gerard Charles (chair); Celik, Fuat E (internal member); Shapley, Nina C (internal member); Rutgers University; Graduate School - New Brunswick
Date Created2015
Other Date2015-10 (degree)
SubjectChemical and Biochemical Engineering, Electron paramagnetic resonance, Copper
Extent1 online resource (vi, 65 p. : ill.)
DescriptionElectron spin resonance (ESR) is an excellent spectroscopic tool to detect speciation transitions in paramagnetic samples. This research studies the activity of copper doped zeolite catalysts that breakdown the atmospheric pollutant NOx gases in diesel engine exhaust emissions. Copper exhibits +1, +2, +3 and +4 oxidation states with 3d9 as outer shell electronic configuration for +2 oxidation state, which is most favored and detectable with Electron Spin Resonance (ESR) spectroscopy. Copper exhibits multiple coordinations such as tetra-, penta-, hexa- or octa- coordinate forms out of which four coordinate or tetra forms are preferred in the +2 state. The determination of this geometry, which affects electronic properties of Cu2+ ions, is important to know the ground state of a certain arrangement through the order of energy levels of d orbital. The electronic g factor with the copper nuclear hyperfine splitting can be indicators of the geometry and the nature of spatial distribution of unpaired spin orbital of the copper center in zeolite as SCR catalysts. Our focus is on elucidating the mechanism at the metal center microenvironment that causes the catalytic activity. This research will drive the improvement in the molecular design of these catalysts and hence help advance environmental chemistry approach in reduction of atmospheric pollution from NOx gas emissions.
NoteM.S.
NoteIncludes bibliographical references
Noteby Viral Sagar
Genretheses, ETD graduate
Persistent URLhttps://doi.org/doi:10.7282/T3DN4717
Languageeng
CollectionGraduate School - New Brunswick Electronic Theses and Dissertations
Organization NameRutgers, The State University of New Jersey
RightsThe author owns the copyright to this work.
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