Supporting ruthenium initiator on PolyHIPE

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dc.contributor.authorÇetinkaya, Sevil
dc.contributor.authorKhosravi, Ezat
dc.contributor.authorThompson, Richard
dc.date.accessioned2020-06-25T17:43:30Z
dc.date.available2020-06-25T17:43:30Z
dc.date.issued2006
dc.description16th International Symposium on Olefin Metathesis and Related Chemistry -- AUG 07-12, 2005 -- Poznan, POLAND
dc.descriptionThompson, Richard L/0000-0002-3207-1036; Thompson, Richard/0000-0002-3207-1036;
dc.description.abstractPolyHIPE samples were successfully synthesised using divinylbenzene and styrene as polymerisable continuous phase, aqueous phase containing potassium persulphate and calcium chloride dihydrate, a mixture of emulsifiers (SPAN20, CTAB and DDBSS) and toluene as a porogen. The PolyHIPE samples 1 and 2 and the PolyHIPE sample 3 were designed to be 90 and 92% porous, respectively, based on the aqueous phase content. PolyHIPE samples were found to be porous and open-cell microstructures with the surface area of 370-430 m(2) g(-1). Alkylidene exchange reactions were carried out between the double bonds of the PolyHIPE and the ruthenium initiator, Ru(=CHPh)(PCy3)(2)Cl-2, for the attachment of the initiator. The amount of initiator loading was determined by phosphorous analysis and for the first time by Rutherford backscattering (RBS) analysis. The loading of the initiator on the PolyHIPE samples, based on phosphorous analysis, was found to be 0.09-0.19 mmol/g. The RBS analysis showed the level of initiator loading to be 0.053-0.097 mmol/g. The level of initiator loading obtained from the phosphorous and the RBS analysis is higher than 0.035 mmol/g reported previously for ruthenium initiator supported on crosslinked polystyrene. However, the level of initiator loading obtained from RBS analysis is lower than that obtained from the phosphorous analysis by ICP-OES. The reason for this discrepancy is believed to be due to inaccuracy of phosphorous analysis as the result of the insolubility of the PolyHIPE supported initiator. (c) 2006 Elsevier B.V. All rights reserved.en_US
dc.identifier.citationclosedAccessen_US
dc.identifier.doi10.1016/j.molcata.2006.02.071
dc.identifier.endpage144en_US
dc.identifier.issn1381-1169
dc.identifier.issue1-2en_US
dc.identifier.scopus2-s2.0-33745407700
dc.identifier.scopusqualityN/A
dc.identifier.startpage138en_US
dc.identifier.urihttps://doi.org10.1016/j.molcata.2006.02.071
dc.identifier.urihttps://hdl.handle.net/20.500.12587/3748
dc.identifier.volume254en_US
dc.identifier.wosWOS:000239157100019
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Bven_US
dc.relation.ispartofJournal Of Molecular Catalysis A-Chemical
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPolyHIPEen_US
dc.subjectsupported catalysten_US
dc.subjectGrubbs initiatoren_US
dc.subjectRutherford backscatteringen_US
dc.subjectsupported ruthenium initiatoren_US
dc.titleSupporting ruthenium initiator on PolyHIPEen_US
dc.typeConference Object

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