Synthesis and characterisation of carbon supported gold catalysts prepared by ion-exchange

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dc.contributor.advisorVan Steen, Ericen_ZA
dc.contributor.advisorCase, Jennien_ZA
dc.contributor.authorBeeming, Brendan Alberten_ZA
dc.date.accessioned2014-07-31T11:12:42Z
dc.date.available2014-07-31T11:12:42Z
dc.date.issued2008en_ZA
dc.descriptionIncludes abstract.
dc.descriptionIncludes bibliographical references (leaves 86-97).
dc.description.abstractGold has been previously overlooked as a catalyst, mainly because the metal has been regarded as catalytically inert, and was tested as large aggregates, and not as nanocrystallites. Large crystallites of gold do not exhibit significant catalytic activity, and if they do, their activity is small compared with platinum group metals. The recent interest in gold as a catalyst has been fuelled by the development of processes to deposit gold on a catalyst support as nano-crystallites (Prati and Martra, 1999). Gold catalysts with nano-crystallites on selected supports have been shown to exhibit high activity for mainly redox reactions (Gluhoi, 2005; Hutchings, 2005). These catalysts have recently been attracting attention as they can be used at near ambient conditions, which allows for cheaper and more environmentally friendly processes. Glucose yielding gluconic acid is an industrially important reaction (Biella et aI., 2002). Gluconic acid and its salts are used as water-soluble cleansing agents or as additives in food and beverages which makes these products important in industrial applications (Kirk-Othmer, 1995). Industrially, the aerobic oxidation of glucose is an enzyme catalysed process. However, due to the low productivity of the glucose fermentation process, the development of a chemical route is of interest. Gold catalysis provides a promising alternative route which can be applied at mild conditions.en_ZA
dc.identifier.apacitationBeeming, B. A. (2008). <i>Synthesis and characterisation of carbon supported gold catalysts prepared by ion-exchange</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering. Retrieved from http://hdl.handle.net/11427/5349en_ZA
dc.identifier.chicagocitationBeeming, Brendan Albert. <i>"Synthesis and characterisation of carbon supported gold catalysts prepared by ion-exchange."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 2008. http://hdl.handle.net/11427/5349en_ZA
dc.identifier.citationBeeming, B. 2008. Synthesis and characterisation of carbon supported gold catalysts prepared by ion-exchange. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Beeming, Brendan Albert AB - Gold has been previously overlooked as a catalyst, mainly because the metal has been regarded as catalytically inert, and was tested as large aggregates, and not as nanocrystallites. Large crystallites of gold do not exhibit significant catalytic activity, and if they do, their activity is small compared with platinum group metals. The recent interest in gold as a catalyst has been fuelled by the development of processes to deposit gold on a catalyst support as nano-crystallites (Prati and Martra, 1999). Gold catalysts with nano-crystallites on selected supports have been shown to exhibit high activity for mainly redox reactions (Gluhoi, 2005; Hutchings, 2005). These catalysts have recently been attracting attention as they can be used at near ambient conditions, which allows for cheaper and more environmentally friendly processes. Glucose yielding gluconic acid is an industrially important reaction (Biella et aI., 2002). Gluconic acid and its salts are used as water-soluble cleansing agents or as additives in food and beverages which makes these products important in industrial applications (Kirk-Othmer, 1995). Industrially, the aerobic oxidation of glucose is an enzyme catalysed process. However, due to the low productivity of the glucose fermentation process, the development of a chemical route is of interest. Gold catalysis provides a promising alternative route which can be applied at mild conditions. DA - 2008 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2008 T1 - Synthesis and characterisation of carbon supported gold catalysts prepared by ion-exchange TI - Synthesis and characterisation of carbon supported gold catalysts prepared by ion-exchange UR - http://hdl.handle.net/11427/5349 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/5349
dc.identifier.vancouvercitationBeeming BA. Synthesis and characterisation of carbon supported gold catalysts prepared by ion-exchange. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 2008 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/5349en_ZA
dc.language.isoengen_ZA
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.titleSynthesis and characterisation of carbon supported gold catalysts prepared by ion-exchangeen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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