Browsing Doctoral Degrees (Chemistry) by Title
Now showing items 1-20 of 172
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An ab initio molecular orbital study of some binary complexes of water.
(1996)Ab initio molecular orbital theory has been successful in predicting the stabilities of many weak complexes; typical of these are the complexes formed between water and various small molecules. To account for the correlation ... -
Activation of n-hexane using vanadium-exchanged zeolites.
(2010)The influence of the form of the ZSM-5 zeolite, vanadium content and the elimination of the exterior surface acidity on the activity and selectivity of n-hexane oxidation was studied using a fixed bed reactor. Blank reactor ... -
Activation of n-octane and cyclohexane to oxygenates using modified zeolites.
(2014)Three types of zeolites namely ZSM-5, Faujasite Y and MOF-5 were synthesized. The synthesis of Na-Fe-silicalite-1(34), H-Fe-silicalite-1(34), Na-Fe-silicalite-1(41), Na-Fe-silicalite-1(68), Na-Fe-silicalite-1(80), ... -
Adsorption of selected pollutants from aqueous solutions onto modified carbon nanotubes.
(2015)The significance of wastewater remediation before its discharge into the aquatic environment cannot be overemphasized. Adsorption has been proven to be effective for the removal of toxic pollutants from industrial effluents ... -
The alkaloids of the Amaryllidaceae : the isolation and structures of two new alkaloids from Haemanthus natalensis and Nerine krigeii and contributions to the chemistry of coccinine : the absolute configuration of alkaloids based on the 5:10b-Ethanophenanthridine nucleus.
(1960)No abstract available. -
Analysis and monitoring of persistent organic pollutants in the Umgeni River, KwaZulu-Natal, South Africa.
(2016)Abstract available in PDF file. -
The application of organically modified heterogeneous catalysts in continious flow hydrogenation reactions.
(2013)No abstract available. -
The application of semiconductors as oxidants in synthetic organic chemistry.
(2012)Oxidation of alcohols is a vital transformation in synthetic organic chemistry as evidenced by their numerous applications in natural product synthesis. However, the traditional oxidants employ hazardous, toxic and ... -
The application of “PNP” aminodiphosphine complexes in the oxidation of n-octane and styrene.
(2015)The oxidation of hydrocarbons provides a cost effective method of converting cheap starting material to bulk chemicals and more importantly in the synthetic transformation to fine chemicals. Transition metals effectively ... -
Approaches to the total synthesis of a novel diarylheptanoid
(2008)The total synthesis of a novel diarylheptanoid isolated from a South African medicinal plant, Siphonochilus aethiopicus, was investigated. S. aethiopicus (Indungulu in Zulu) is the only South African species of the ... -
Artificial neural networks for the classification of Meliaceae extractives.
(1998)The goal of this project was the development of a computer-based system using artificial intelligence to classify the limonoids, protolimonoids and triterpenoids isolated from the family Meliaceae by the Natural Products ... -
Asymmetric synthesis with an ephedrine based chiral auxilliary.
(1992)Abstract available in pdf file. -
Boron- and nitrogen-doped carbon nanotubes : synthesis, characterization and application in solar cells.
(2015)Abstract available in PDF file. -
The Brix-Free water capacity and sorption behaviour of fibre components of sugar cane (Saccharum officinarum).
(2008)Milling data from sugar factories in Mauritius were examined from 1960 to 2004 to assess the trend in the quality of cane received at mills and the change in factory performance. A deterioration in overall quality was ... -
Characterisation of extracellular polysaccharides produced from a fungal pathogen of sugarcane.
(2016)Abstract available in PDF file. -
Chemical constituents from Elytropappus rhinocerotis and Rhoicissus tridentata : structural and activity studies.
(2015)Traditional medicines are used by approximately 80% of South African population for their primary health care needs, but the chemistry and biological activity of many medicinal plants have not yet been investigated. This ...