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Reaction of meta-diisopropylbenzene on acid molecular sieves and synthesis of zeolites by a vapor phase transport method

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dc.contributor.authorKim, Man-Hoeen
dc.contributor.committeechairDavis, Mark E.en
dc.contributor.committeememberCox, David F.en
dc.contributor.committeememberConger, William L.en
dc.contributor.committeememberVelander, William H.en
dc.contributor.committeememberWills, George B.en
dc.contributor.departmentChemical Engineeringen
dc.date.accessioned2014-03-14T21:21:41Zen
dc.date.adate2005-10-20en
dc.date.available2014-03-14T21:21:41Zen
dc.date.issued1992-05-15en
dc.date.rdate2005-10-20en
dc.date.sdate2005-10-20en
dc.description.abstractMeta-diisopropylbenzene is reacted with propylene over the acid form of the molecular sieves SAPO-5, mordenite, offretite, beta, hexagonal and cubic faujasite (hex and FAU), L, SAPO-37, and an amorphous silica-alumina at temperatures around 463 K in a flow-type fixed-bed reactor. A small amount of cracking is observed. The main reactions of meta-diisopropylbenzene are isomerization and alkylation. This alkylation is proposed as a new test reaction to characterize the effective size of the voids in larger pore (12 T-atom rings or above) molecular sieves by measuring the amount ratio of formed 1,3,5- to 1,2,4-triisopropylbenzene. In most cases, this ratio increases with the increasing effective void size of the molecular sieves in the order: SAPO-5 < mordenite < offretite < beta < hex ≈ FAU < L < SAPO-37 < amorphous silica-alumina. Since samples with the FAU topology show lower selectivities to 1,3,5-triisopropylbenzene than the mesoporous, amorphous silica-alumina, pore curvature has an influence on alkylation selectivity even for voids of 13 A size.en
dc.description.degreePh. D.en
dc.format.extentxi, 114 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-10202005-102804en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10202005-102804/en
dc.identifier.urihttp://hdl.handle.net/10919/40016en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1992.K559.pdfen
dc.relation.isformatofOCLC# 26248033en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1992.K559en
dc.subject.lcshAlkylationen
dc.subject.lcshCrystallizationen
dc.subject.lcshIsomerizationen
dc.subject.lcshMolecular sievesen
dc.subject.lcshZeolitesen
dc.titleReaction of meta-diisopropylbenzene on acid molecular sieves and synthesis of zeolites by a vapor phase transport methoden
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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