Browsing School of Chemistry and Physics by Title
Now showing items 387-406 of 700
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On non-Hermitian quantum mechanics.
(2013)The purpose of this dissertation is to review the salient features of non-Hermitian quantum mechanics. An introduction to Hermitian quantum mechanics is included to make this review as accessible as possible. Attempts ... -
On the interaction of laser beams with air : with specific reference to refraction and scattering.
(1996)The interaction of laser light with a parcel of air with a known density structure can result in one of three reactions. The simplest of these reactions is reflection. Depending on the nature of the density profile, that ... -
Optimizing quantum communication through hybrid technology.
(2012)Quantum Key Distribution (QKD) is a symmetric key sharing protocol. The theoretical process exploits the principles of quantum physics to underpin a physical security against any form of eavesdropping. QKD not only ensures ... -
Optimizing the synthesis of vanadium oxide nano-structures by plasma plume dynamics.
(2016)Abstract available in PDF file. -
Organic flame retardants in the indoor environment.
(2014)Flame retardants (FRs) have become ubiquitous contaminants found in humans, animals, various outdoor environments, e.g. air, soil, sediment, etc., and indoor environments particularly, homes, automobiles, classrooms and ... -
Outer electron radiation belt dropouts : Geosynchronous and ionospheric responses.
(2011)The study of outer radiation belt dynamics has been ongoing for over 5 decades. Outer radiation belt dropouts involve the rapid lost of electron fluxes at the main phase of a storm and subsequent recovery. The characteristics ... -
Oxidation and oxidative dehyrogenation of n-octane using V₂O₅ supported on hydroxyapatites.
(2012)Vanadium pentoxide with loadings varying from 2.5-15 wt% was supported on hydroxyapatite (HAp) by the wet impregnation technique. The materials were characterized by techniques such as X-ray powder diffraction (XRD), ... -
The oxidation of n-octane by iridium and cobalt PNP complexes.
(2011)Paraffin activation has practical implications in the replacement of current petrochemical feedstocks (olefins), by utilizing economical and easily accessible alkanes, which may result in more efficient strategies for ... -
Oxidation of primary alcohols to aldehydes and esters.
(1998)The initial aim of this research project was to oxidise Cr C4 alcohols to their respective aldehydes. However, isolation of these aldehydes was impossible due to their low boiling points. Another problem was the proximity ... -
Oxidation of ɳ-octane over molybdenum oxide based catalysts.
(2014)The research into alternative feedstocks has gained importance in recent years to replace olefins by alkanes. The use of alkanes is viable since they are cheap, abundant and can be easily sourced from Gas to liquid (GTL) ... -
The oxidative activation of n-octane over titania supported cobalt catalysts.
(2013)This research effort explored routes to valorise alkanes via heterogeneous catalysis. Dehydrogenation and oxidative dehydrogenation are the two routes that were probed in this research effort to activate n-octane by means ... -
Oxidative degradation of textile dyes with hypochlorite and chlorine dioxide.
(2010)The oxidation reaction mechanisms of water soluble textile dyes amaranth (an azo dye), brilliant blue-R (a triaryl dye) and safranine-O (an azine dye) with oxidants- hypochlorite and chlorine dioxide, were investigated. ... -
The oxidative dehydrogenation of n-Hexane and n-Octane over vanadium magnesium oxide catalysts.
(2006)Vanadium magnesium oxide (VMgO) catalysts with different vanadium loadings were synthesized and tested for catalytic activity using pure «-hexane and «-octane as feeds. High surface area catalysts were obtained by the wet ... -
Oxidative dehydrogenation of n-octane over molybdate based catalysts.
(2014)The oxidative dehydrogenation of n-octane over different molybdates was investigated using a continuous flow fixed bed reactor in the temperature range of 350-550 °C at 50 °C intervals. Molybdates investigated in this ... -
Oxidative dehydrogenation of n-octane using vanadium-based hydrotalcite-like compounds.
(2010)The oxidative dehydrogenation of alkanes provides a potential route to higher value products such as olefins and aromatic compounds. Alkanes are of low environmental impact and their increasing availability has prompted ... -
The oxidative dehydrogenation of ɳ-octane using manganese oxide supported on SBA-15 catalysts.
(2014)Supported metal oxides have been widely used in heterogeneous catalysis, particularly for the activation of paraffin’s. For this study, manganese oxide supported on SBA-15 was used to investigate the oxidative dehydrogenation ... -
Oxidative reactions to form ethyl methacrylate via a phase specific iron phosphate catalyst .
(2012)The importance of alkyl methacrylates has been firmly established within the chemical industry. For example, free radical polymers, which contain the methacrylate backbone are more rigid than acrylate polymers. Several ... -
Oxidovanadium complexes with N-donor heterocyclic chelates.
(2013)The growing significance of vanadium in medicinal inorganic chemistry is due to the diverse biological activities of its metal complexes, as elaborated in Chapter 1. These biological activities stem from the fact ...