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dc.contributor.authorMarsden, Christine E.en
dc.date.accessioned2019-02-15T14:35:12Z
dc.date.available2019-02-15T14:35:12Z
dc.date.issued1978en
dc.identifier.urihttp://hdl.handle.net/1842/35150
dc.description.abstracten
dc.description.abstractA general review of molecular sieve zeolites precedes a more specialised account of the properties of the zeolites omega and erionite. It is these relatively unstudied zeolites which have been selected for a detailed catalytic characterisation utilising the isomerisation of the n- butenes and the methyl substituted cyclopropanes as test reactions. The resulting product distributions for each zeolite were indicative of carbonium ion type mechanisms. A study of the reaction of specifically labelled deuteropropene, CD₂= CH-CH₃, on the catalysts confirmed this mechanism and moreover, demonstrated that the intermediate carbonium ion was formed in an associative manner involving Brönsted acid sites.en
dc.description.abstractA gravimetric study of the sorption of reactant and product molecules into the zeolites was also carried out. The wide pore zeolite omega exhibited rapid sorption and desorption of all three n- butenes and methylcyclopropane. Conversely, the rates of sorption of the n- butenes into erionite were a function of their dipole moments and structures, the order trans but-2-ene > but-1-ene > cis but -2-ene being observed. Furthermore, the sorption rates shown by erionite were dependent on the ionic composition of the erionite sample.en
dc.publisherThe University of Edinburghen
dc.relation.ispartofAnnexe Thesis Digitisation Project 2019 Block 22en
dc.relation.isreferencedbyen
dc.titleCatalytic reactions of alkenes and substituted cyclopropanes on zeolitesen
dc.typeThesis or Dissertationen
dc.type.qualificationlevelDoctoralen
dc.type.qualificationnamePhD Doctor of Philosophyen


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