The effect of temperature and crystallite size on the growth and morphology of carbon nanotubes

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dc.contributor.advisorVan Steen, Ericen_ZA
dc.contributor.authorKleinsmidt, Jacques Nen_ZA
dc.date.accessioned2014-08-28T09:15:57Z
dc.date.available2014-08-28T09:15:57Z
dc.date.issued2005en_ZA
dc.description.abstractThe aim of the study was to synthesise iron oxide crystallites with different crystallite sizes supported on y-A120 3 using the reverse micelle technique. It was hypothesised that changing the crystallite size of the synthesised iron oxide crystallites could lead to the control of the external nanotube diameter. The effect of temperature on the external diameter and productivity was also investigated. It was found through titration and AAS that the iron loading was lower than the expected 15 wt.-%. Furthermore, it was observed that the loading was not consistent through different catalyst samples. This was attributed to incomplete precipitation of iron using the reverse micelle technique, the rigorous cleaning regime implemented and weak metal-support interaction. It was found through XRD and TEM that crystallites in the nanometre range were produced although they were not well distributed over the support. It was also found that the expected linear relationship between water to surfactant ratio and crystallite size was not achieved. Hence the obtained crystallite sizes were significantly different from those obtained in the work by Mabaso.en_ZA
dc.identifier.apacitationKleinsmidt, J. N. (2005). <i>The effect of temperature and crystallite size on the growth and morphology of carbon nanotubes</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering. Retrieved from http://hdl.handle.net/11427/6695en_ZA
dc.identifier.chicagocitationKleinsmidt, Jacques N. <i>"The effect of temperature and crystallite size on the growth and morphology of carbon nanotubes."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 2005. http://hdl.handle.net/11427/6695en_ZA
dc.identifier.citationKleinsmidt, J. 2005. The effect of temperature and crystallite size on the growth and morphology of carbon nanotubes. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Kleinsmidt, Jacques N AB - The aim of the study was to synthesise iron oxide crystallites with different crystallite sizes supported on y-A120 3 using the reverse micelle technique. It was hypothesised that changing the crystallite size of the synthesised iron oxide crystallites could lead to the control of the external nanotube diameter. The effect of temperature on the external diameter and productivity was also investigated. It was found through titration and AAS that the iron loading was lower than the expected 15 wt.-%. Furthermore, it was observed that the loading was not consistent through different catalyst samples. This was attributed to incomplete precipitation of iron using the reverse micelle technique, the rigorous cleaning regime implemented and weak metal-support interaction. It was found through XRD and TEM that crystallites in the nanometre range were produced although they were not well distributed over the support. It was also found that the expected linear relationship between water to surfactant ratio and crystallite size was not achieved. Hence the obtained crystallite sizes were significantly different from those obtained in the work by Mabaso. DA - 2005 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2005 T1 - The effect of temperature and crystallite size on the growth and morphology of carbon nanotubes TI - The effect of temperature and crystallite size on the growth and morphology of carbon nanotubes UR - http://hdl.handle.net/11427/6695 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/6695
dc.identifier.vancouvercitationKleinsmidt JN. The effect of temperature and crystallite size on the growth and morphology of carbon nanotubes. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 2005 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/6695en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Chemical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherChemical Engineeringen_ZA
dc.titleThe effect of temperature and crystallite size on the growth and morphology of carbon nanotubesen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMSc
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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