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dc.contributor.authorXi, Yanen_US
dc.date.accessioned2014-03-14T20:38:10Z
dc.date.available2014-03-14T20:38:10Z
dc.date.issued2005-05-11en_US
dc.identifier.otheretd-05222005-141806en_US
dc.identifier.urihttp://hdl.handle.net/10919/33112
dc.description.abstractThis thesis describes the preparation and characterization of manganese oxide catalysts and their application in the oxidation of acetone, a typical volatile organic compound (VOC), and ozone decomposition. This topic is of great value because of environmental concerns of the elimination of the harmful VOCs and ozone. Manganese oxide was chosen because it is a well-known complete oxidation catalyst for VOCs and also an active catalyst for ozone decomposition. Two cases of studies were carried out in this work. The first study involved the oxidation of acetone using ozone on silica- and alumina-supported manganese oxide catalysts deposited on aluminum oxide foam substrates. The characteristics of the catalysts were determined through various techniques, including x-ray diffraction (XRD), x-ray absorption spectroscopy (XAS), Brunauer-Emmett-Teller (BET) surface area analysis, temperature-programmed reduction (TPR), and oxygen chemisorption. The use of these techniques allowed better understanding of the nature of the catalysts. Activity tests were carried out in the acetone oxidation reaction and it was found that the usage of ozone substantially reduced the oxidation temperature. Steady-state in situ Raman spectroscopy was also carried out to better understand the mechanism of the acetone oxidation reaction using ozone. The second study involved an investigation of structural and electronic properties of manganese centers of the MnOx/SiO2 and MnOx/Al2O3 catalysts during the ozone decomposition reaction using in situ x-ray absorption spectroscopy (XAS). The number of surface active sites was again determined through TPR and oxygen chemisorption measurements. The performance of the catalysts with different loadings and supports were also compared.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartChapter4.pdfen_US
dc.relation.haspartVita.pdfen_US
dc.relation.haspartChapter3_corrected.pdfen_US
dc.relation.haspartAbstract.pdfen_US
dc.relation.haspartTable_of_Contents.pdfen_US
dc.relation.haspartChapter1.pdfen_US
dc.relation.haspartAcknowledgements.pdfen_US
dc.relation.haspartTitle_Page_corrected.pdfen_US
dc.relation.haspartChapter2_corrected.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectManganese oxide catalystsen_US
dc.subjectVOCsen_US
dc.subjectozoneen_US
dc.subjectacetoneen_US
dc.subjectfoamen_US
dc.subjectX-ray absorption spectroscopyen_US
dc.titleOzone Decomposition and Acetone Oxidation on Manganese Oxide Catalystsen_US
dc.typeThesisen_US
dc.contributor.departmentChemical Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineChemical Engineeringen_US
dc.contributor.committeechairOyama, Shigeo Teden_US
dc.contributor.committeememberCox, David F.en_US
dc.contributor.committeememberHanson, Brian E.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05222005-141806/en_US
dc.date.sdate2005-05-22en_US
dc.date.rdate2005-06-15
dc.date.adate2005-06-15en_US


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