Shape-selective methylation of meta-cresol

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dc.contributor.advisorFletcher, Jacken_ZA
dc.contributor.authorFernsby, Alistair Marken_ZA
dc.date.accessioned2015-01-09T08:56:25Z
dc.date.available2015-01-09T08:56:25Z
dc.date.issued2006en_ZA
dc.descriptionIncludes bibliographical references.en_ZA
dc.description.abstractPhenol, cresols and xylenols are of enormous industrial importance, mainly in the polymers (resins), electronics, pesticides, pharmarceutical, paint and dye industries. The selective production of cresols and xylenols is difficult, partly owing to the number of different isomers that occur and, since many of these isomers have similar boiling points, separation via distillation is not in all cases effective or economical. Other separation techniques are often complicated and costly. Consequently, the direct selective synthesis of individual isomers is to be technically highly prized. In this work the synthesis of specific xylenol isomers was investigated via acid catalysed methylation of m-cresol with methanol, and focusing on shape-selective or potentially shape-selective zeiolites and the effects of varying reaction parameters. Attention was drawn to specifically producing the "slim" isomers, 2,5-xylenol and 3,4-xylenol. Regualr commercial catalysts based on zeolites FER, MFI, MOR, MTW and BEA were applied. Results are compared to product distributions obtained over non shape-selective, amorphous silica-alumina.en_ZA
dc.identifier.apacitationFernsby, A. M. (2006). <i>Shape-selective methylation of meta-cresol</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering. Retrieved from http://hdl.handle.net/11427/11833en_ZA
dc.identifier.chicagocitationFernsby, Alistair Mark. <i>"Shape-selective methylation of meta-cresol."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 2006. http://hdl.handle.net/11427/11833en_ZA
dc.identifier.citationFernsby, A. 2006. Shape-selective methylation of meta-cresol. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Fernsby, Alistair Mark AB - Phenol, cresols and xylenols are of enormous industrial importance, mainly in the polymers (resins), electronics, pesticides, pharmarceutical, paint and dye industries. The selective production of cresols and xylenols is difficult, partly owing to the number of different isomers that occur and, since many of these isomers have similar boiling points, separation via distillation is not in all cases effective or economical. Other separation techniques are often complicated and costly. Consequently, the direct selective synthesis of individual isomers is to be technically highly prized. In this work the synthesis of specific xylenol isomers was investigated via acid catalysed methylation of m-cresol with methanol, and focusing on shape-selective or potentially shape-selective zeiolites and the effects of varying reaction parameters. Attention was drawn to specifically producing the "slim" isomers, 2,5-xylenol and 3,4-xylenol. Regualr commercial catalysts based on zeolites FER, MFI, MOR, MTW and BEA were applied. Results are compared to product distributions obtained over non shape-selective, amorphous silica-alumina. DA - 2006 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2006 T1 - Shape-selective methylation of meta-cresol TI - Shape-selective methylation of meta-cresol UR - http://hdl.handle.net/11427/11833 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/11833
dc.identifier.vancouvercitationFernsby AM. Shape-selective methylation of meta-cresol. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 2006 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/11833en_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.titleShape-selective methylation of meta-cresolen_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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