Influence of oxygen vacancies on oxygenate reactions over SnO₂(110) single crystal surfaces

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dc.contributor.authorGercher, Victoria A.en
dc.contributor.committeechairCox, David F.en
dc.contributor.committeememberDavis, Richey M.en
dc.contributor.committeememberDillard, John G.en
dc.contributor.committeememberAnderson, Mark R.en
dc.contributor.committeememberHanson, Brian E.en
dc.contributor.departmentChemical Engineeringen
dc.date.accessioned2014-03-14T21:09:55Zen
dc.date.adate2006-03-02en
dc.date.available2014-03-14T21:09:55Zen
dc.date.issued1994-08-05en
dc.date.rdate2006-03-02en
dc.date.sdate2006-03-02en
dc.description.abstractThe adsorption of a number of Brønsted acids of differing strengths has been studied on stoichiometric and defective Sn0₂ (110) surfaces. The extent of dissociation of these acids depends on the surface composition and the strength of the acid. Two crystallographically inequivalent types of oxygen vacancies can be introduced onto SnO0₂ (110) surfaces, and the kinetics of the reactions of Brønsted acids is influenced by the number and type of oxygen vacancies present on each surface. The site requirement for dissociation of Brønsted acids has been described as a coordinatively unsaturated cation and an available anion. On the Sn00₂ ( 110) surfaces studied, this site requirement was seen to be a necessary but not sufficient condition for dissociation. In contradiction to the generally accepted idea that the presence of defects increases reactivity, the most defective SnO₂ (110) surface considered showed the lowest activity for dissociation for all adsorbates studied.en
dc.description.degreePh. D.en
dc.format.extentx, 134 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-03022006-093407en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03022006-093407/en
dc.identifier.urihttp://hdl.handle.net/10919/37451en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1994.G473.pdfen
dc.relation.isformatofOCLC# 31892807en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1994.G473en
dc.subject.lcshOxidationen
dc.subject.lcshStannic oxideen
dc.titleInfluence of oxygen vacancies on oxygenate reactions over SnO₂(110) single crystal surfacesen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineChemical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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