The hydrocracking of Fischer-Tropsch wax : using n-tetradecane as a model compound

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dc.contributor.advisorFletcher, Jacken_ZA
dc.contributor.advisorBöhringer, Walteren_ZA
dc.contributor.authorKotsiopoulos, Athanasiosen_ZA
dc.date.accessioned2014-10-21T06:54:08Z
dc.date.available2014-10-21T06:54:08Z
dc.date.issued2005en_ZA
dc.descriptionIncludes bibliographical references (p. 99-102).en_ZA
dc.description.abstractIncreasingly stringent legislation has been applied to transportation fuels to minimise or eliminate aromatics and sulphur compounds in diesel fuel. This has led to manufacturers determining alternative production methods to comply to legislation. Part of the current diesel fuel is being produced by hydrocracking heavier fractions derived from crude oil. These hydrocracking processes utilise bi-functional catalysts which have a metal (hydrogenating/dehydrogenating) function and an acid (cracking) function. The most common of these hydrocracking catalysts are combinations of either noble metals and acid zeolites, such as Pt/ HY, or combined sulphides of group VIA and VIIIA metals on amorphous acidic supports, such as CoMo/SiO2-Al2O3. For good quality diesel, the fuel should have a high cetane number and the aromatics and sulphur content should also be kept to a. minimum (e.g. EU legislation: sulphur content must be below 10 ppm (wt) by 2008). Fischer-Tropsch wax is made up predominantly of long-chain linear paraffins with exceptionally low aromatics and heteroatom content (sulphur and nitrogen-containing compounds) and therefore a good source for very 'clean', good quality diesel. The objective of this study was therefore to investigate the suitability of a conventional bi-functional hydrocracking catalyst namely, CoMo/SiO2-Al2O3 in unsulphided form for the hydrocracking of Fischer-Tropsch wax using n-tetradecane as a model compound. The purpose of using the catalyst in unsulphided form was not to introduce any sulphur to the already sulphur-free feedstock.en_ZA
dc.identifier.apacitationKotsiopoulos, A. (2005). <i>The hydrocracking of Fischer-Tropsch wax : using n-tetradecane as a model compound</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Catalysis Research. Retrieved from http://hdl.handle.net/11427/8662en_ZA
dc.identifier.chicagocitationKotsiopoulos, Athanasios. <i>"The hydrocracking of Fischer-Tropsch wax : using n-tetradecane as a model compound."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Catalysis Research, 2005. http://hdl.handle.net/11427/8662en_ZA
dc.identifier.citationKotsiopoulos, A. 2005. The hydrocracking of Fischer-Tropsch wax : using n-tetradecane as a model compound. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Kotsiopoulos, Athanasios AB - Increasingly stringent legislation has been applied to transportation fuels to minimise or eliminate aromatics and sulphur compounds in diesel fuel. This has led to manufacturers determining alternative production methods to comply to legislation. Part of the current diesel fuel is being produced by hydrocracking heavier fractions derived from crude oil. These hydrocracking processes utilise bi-functional catalysts which have a metal (hydrogenating/dehydrogenating) function and an acid (cracking) function. The most common of these hydrocracking catalysts are combinations of either noble metals and acid zeolites, such as Pt/ HY, or combined sulphides of group VIA and VIIIA metals on amorphous acidic supports, such as CoMo/SiO2-Al2O3. For good quality diesel, the fuel should have a high cetane number and the aromatics and sulphur content should also be kept to a. minimum (e.g. EU legislation: sulphur content must be below 10 ppm (wt) by 2008). Fischer-Tropsch wax is made up predominantly of long-chain linear paraffins with exceptionally low aromatics and heteroatom content (sulphur and nitrogen-containing compounds) and therefore a good source for very 'clean', good quality diesel. The objective of this study was therefore to investigate the suitability of a conventional bi-functional hydrocracking catalyst namely, CoMo/SiO2-Al2O3 in unsulphided form for the hydrocracking of Fischer-Tropsch wax using n-tetradecane as a model compound. The purpose of using the catalyst in unsulphided form was not to introduce any sulphur to the already sulphur-free feedstock. DA - 2005 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2005 T1 - The hydrocracking of Fischer-Tropsch wax : using n-tetradecane as a model compound TI - The hydrocracking of Fischer-Tropsch wax : using n-tetradecane as a model compound UR - http://hdl.handle.net/11427/8662 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/8662
dc.identifier.vancouvercitationKotsiopoulos A. The hydrocracking of Fischer-Tropsch wax : using n-tetradecane as a model compound. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Catalysis Research, 2005 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/8662en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentCentre for Catalysis Researchen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherChemical Engineeringen_ZA
dc.titleThe hydrocracking of Fischer-Tropsch wax : using n-tetradecane as a model compounden_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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