Break-in behavior of a tungsten oxide on silica catalyst during propylene disproportionation

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dc.contributor.authorFathi-Kalajahi, Jamshiden
dc.contributor.committeechairWills, George B.en
dc.contributor.committeememberBeyer, Gerhard H.en
dc.contributor.committeememberRony, Peter R.en
dc.contributor.committeememberWard, Thomas C.en
dc.contributor.committeememberMichelsen, Donald L.en
dc.contributor.departmentChemical Engineeringen
dc.date.accessioned2014-03-14T21:15:03Zen
dc.date.adate2012-06-14en
dc.date.available2014-03-14T21:15:03Zen
dc.date.issued1978-04-05en
dc.date.rdate2012-06-14en
dc.date.sdate2012-06-14en
dc.description.abstractThis investigation consisted of a study of the break-in behavior of a tungsten oxide on silica catalyst during propylene disproportionation. A catalyst of 10 percent WO3 on silica gel (223 square meters per gram B.E.T. surface area) was used in a microcatalytic reactor. During the initial contacting of freshly activated samples of this catalyst with propylene, significant increases in disproportionation activity were observed for periods of up to 20 hours. The object of this study was to investigate the phenomena responsible for this break-in. The rate of approach to steady-state activity data were obtained using catalyst samples which were first saturated with each of the three gases involved in this reaction (propylene, ethylene, and 2-butene) by pulsing at .94 and 2.7 atmospheres before.starting the propylene flow. Effects of each gas on the break-in behavior of the catalyst were determined. A material balance around the reactor was made for each gas by pulse reactor techniques.en
dc.description.degreePh. D.en
dc.format.extentxiii, 182 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-06142012-040025en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-06142012-040025/en
dc.identifier.urihttp://hdl.handle.net/10919/38613en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1978.F28.pdfen
dc.relation.isformatofOCLC# 40294226en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectcatalyst propertiesen
dc.subject.lccLD5655.V856 1978.F28en
dc.titleBreak-in behavior of a tungsten oxide on silica catalyst during propylene disproportionationen
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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