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Ethylene Polymerization Using a Zirconium Amidinate Supported Catalyst

dc.contributor.advisorSita, Lawrenceen_US
dc.contributor.authorYoung, Andrea Eliseen_US
dc.date.accessioned2004-06-04T05:42:38Z
dc.date.available2004-06-04T05:42:38Z
dc.date.issued2004-05-07en_US
dc.identifier.urihttp://hdl.handle.net/1903/1449
dc.description.abstractA series of W. R. Grace Davison IOLA(TM), methylaluminoxane-silica (MAO/Silica) and MAO/IOLA support materials were used to activate and immobilize a zirconium amidinate single site catalyst of the formula Cp*ZrMe2[tBuNC(Me)NCEt]. Ethylene homo-polymerizations and co-polymerizations with 1-hexene were conducted in heptane and compared. The catalysts activity was investigated under varying condition such as pre-catalyst loading, pressure, temperature, co-monomer incorporation and additives. The catalyst supported on the MAO/IOLA B support material proved to be more active than the IOLA and m-IOLA support activators, and the MAO/Silica and MAO/IOLA A support materials. A difference in activity of as much as 1015 gPE/gcat.h-1 was noted. The catalyst sensitivity to varying ethylene polymerization conditions such as temperature and pressure were investigated for the MAO/IOLA B supported catalyst. Catalyst activities of more than 2100 gPE/gcat.h-1 were achieved. Homo-polymer and co-polymer samples were characterized and compared with respect to their melting temperature, molecular weights and polydispersities.en_US
dc.format.extent541589 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.titleEthylene Polymerization Using a Zirconium Amidinate Supported Catalysten_US
dc.typeThesisen_US
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_US
dc.relation.isAvailableAtUniversity of Maryland (College Park, Md.)en_US
dc.contributor.departmentChemistryen_US
dc.subject.pqcontrolledChemistry, Polymeren_US
dc.subject.pqcontrolledChemistry, Inorganicen_US
dc.subject.pquncontrolledpolyethyleneen_US
dc.subject.pquncontrolledpolymersen_US
dc.subject.pquncontrolledsupport activatoren_US
dc.subject.pquncontrolledsupport materialen_US
dc.subject.pquncontrolledzirconium catalysten_US
dc.subject.pquncontrolled1-hexene co-polymeren_US


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