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Dissertations / Theses on the topic 'Sulphur Dioxide Oxidation Reaction'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Ngeleka, Tholakele Prisca. "Sulphur dioxide capture under fluidized bed combustion conditions / Tholakele Prisca Ngeleka." Thesis, North-West University, 2005. http://hdl.handle.net/10394/1416.

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An investigation was undertaken to determine the feasibility of increasing the hydrogen production rate by coupling the water gas shift (WGS) process to the hybrid sulphur process (HyS). This investigation also involved the technical and economical analysis of the water gas shift and the H2 separation by means of Pressure swing adsorption (PSA) process. A technical analysis of the water gas shift reaction was determined under the operating conditions selected on the basis of some information available in the literature. The high temperature system (HTS) and low temperature system (LTS) reactor

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2

Hong, Pui-Kwan Andrew Hoffmann Michael R. Hoffmann Michael R. "Catalytic oxidation of sulphur dioxide by heterogeneous cobalt-phthalocyanine /." Diss., Pasadena, Calif. : California Institute of Technology, 1988. http://resolver.caltech.edu/CaltechETD:etd-11082007-080528.

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3

Esplin, Gordon John. "Heterogeneous reaction kinetics of sulphur dioxide and airborne limestone particles." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28379.

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The literature on acid rain provides evidence that large (>5 μm) alkaline particles in the atmosphere, which derived from surface soil, play an important role in mitigating the effect of acid rain. Not only do they help to neutralize acidity but they also are a source of nutrients to the terrestrial and aquatic environments. While ground-up limestone has been added to the forests and the lakes of regions deficient in alkalinity, this mode of application is prohibitively expensive. An economic alternative method of distribution would utilize the advective and turbulent diffusive processes with

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4

Hong, William Sungil. "Oxidation-reduction kinetics of porous titanium dioxide /." The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487331541711442.

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5

Macdonald, Anne Marie. "Sulphur dioxide oxidation in a rainband : effects of in-cloud hydrogen peroxide production." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=55616.

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6

Tomlinson, David. "Stability of catalytic plate reactors." Thesis, University of Newcastle Upon Tyne, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337374.

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7

Gopala, Krishna K. V. "Aqueous Phase Oxidation Of Sulfur Dioxide In Stirred Slurry Reactors." Thesis, Indian Institute of Science, 1994. http://hdl.handle.net/2005/130.

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Air pollution by sulfur dioxide is of great concern due to its harmful effects on environment, human beings, fauna and flora. Fossil-fuel-fired power plants are one of the major sources of SO2 emissions. Typically the concentration of SO2 in the flue gases of these plants is in the range of 2000 to 20000 ppm. Flue gas desulfurisation is one of the widely practiced strategies to control SO2 emissions. Aqueous phase oxidation of sulfur dioxide catalysed by carbonaceous particles is an attractive alternative to the conventional processes for flue gas desulfurisation because, amongst other reasons

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8

Lau, Ngai Ting. "Catalytic reduction of sulfur dioxide and nitric oxide /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?CENG%202006%20LAU.

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9

Zhang, Wensheng. "SO2/O2 as an oxidant in hydrometallurgy." Murdoch University, 2000. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20080115.141151.

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10

Shon, Zang-Ho. "Photochemical assessment of oceanic emissions of DMS and its oxidation to SO₂ based on airborne field observations." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/25998.

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11

Coetzee, Carien. "Oxygen and sulphur dioxide additions to Sauvignon blanc : effect on must and wine composition." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6733.

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Thesis (MScAgric (Viticulture and Oenology))--University of Stellenbosch, 2011.<br>Includes bibliogaphy.<br>ENGLISH ABSTRACT: Sauvignon blanc wines have become increasingly popular in South Africa as it is a cultivar that can be easily manipulated in the vineyard and cellar to produce a range of wine styles. These wines are usually given aroma descriptors such as green pepper, grassy and asparagus; while other more tropical aromas include passion fruit and guava. These aromas are thought to be mainly caused by methoxypyrazines and volatile thiols. These compounds are known to be character

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12

Modingwane, Boitshoko Goitseone. "Investigation of Pt supported on carbon, ZrO2, Ta2O5 and Nb2O5 as electrocatalysts for the electro–oxidation of SO2 / Boitshoko Goitseone Modingwane." Thesis, North-West University, 2011. http://hdl.handle.net/10394/5557.

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The gradual depletion of and dependence on fossil fuels, air pollution and global warming have all accelerated the development of alternative energy systems which use hydrogen as an energy carrier. The hybrid sulphur cycle (HyS) is the foremost electrothermochemical process that can produce hydrogen as the energy carrier. The HyS cycle consists of two units, namely the sulphuric acid decomposition reactor and the sulphur dioxide electrolyser (SDE). The SDE is responsible for the SO2 electrooxidation to sulphuric acid and protons at the anode and the electro–reduction of protons to hydrogen at

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13

Sarver, Emily Allyn. "The Ferrous Regeneration Process for Use in Alternate Anode Reaction Technology in Copper Hydrometallurgy." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/34291.

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The Fe(II) regeneration process is an important aspect of Alternate Anode Reaction Technology (AART) using Fe(II)/Fe(III)-SO2 reactions for copper hydrometallurgy; however little has been done to study it specifically. The process regenerates Fe(II) via Fe(III) reduction by SO2(aq), catalyzed by activated carbon particles. To better understand and improve the process, two studies have been conducted with respect to variable factors and their affects on the regeneration. A study of fundamental kinetics confirms that the regeneration reaction is mass transfer-controlled, requiring adsorption

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14

Gottfried, Jörg Michael. "CO oxidation over gold adsorption and reaction of oxygen, carbon monoxide, and carbon dioxide on an Au(110)-(1x2) surface /." [S.l. : s.n.], 2003. http://www.diss.fu-berlin.de/2003/133/index.html.

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15

Sanyal, Tanushree Sankar. "Capture of Gaseous Sulfur Dioxide Using Graphene Oxide Based Composites." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/41945.

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Sulfur dioxide (SO₂), a well-known pollutant emitted from fossil fuel combustion, has major adverse health and environmental impacts. It is harmful at low concentration with a permissible exposure limit of two ppm for the eight-hour time-weighted average (TWA) value. Fortunately, its atmospheric concentration, like other air pollutants, has gradually reduced in Canada in the past years. However, despite the well-established flue gas desulfurization technologies, they have the disadvantages of being energy-intensive, not very efficient to achieve very low concentrations (at ppm level) and they

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16

Ferrandon, Magali. "Mixed metal oxide - noble metal catalysts for total oxidation of volatile organic compounds and carbon monoxide." Doctoral thesis, Stockholm, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3156.

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17

Kim, Sang Hoon. "Study of reaction mechanisms on single crystal surfaces with scanning tunneling microscopy." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2003. http://dx.doi.org/10.18452/14884.

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Ziel dieser Arbeit war, die Rastertunnelmikroskopie, die bereits zur Aufklärung von einfachen Reaktionsmechanismen eingesetzt wurde, für em kompliziertere Reaktionen anzuwenden. Die Oxidation von CO auf Pd(111) und auf einem RuO2-Film auf Ru(0001) wurde untersucht. Strukturelle Analysen ergeben mikroskopische Verteilungen der Adsorbate in den Überstrukturen von O und CO auf Pd(111) und RuO2. Dynamische und quantitative Analysen der Reaktionen liefern die Kinetik und die Mechanismen der Reaktionen direkt auf der mikroskopischen Ebene. O-Atome auf Pd(111) sind bei mittleren Bedeckungsgraden (0.

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18

Payyapilly, Jairaj Joseph. "Formation And Growth Mechanisms of a High Temperature Interfacial Layer Between Al and TiO2." Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/29733.

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The product of interaction between Al and TiO2 at elevated temperature has a wide range of applications in refractory, structural and electronics industries (refractory tiles, tank armor, fuel cells, and microelectronic devices). This research attempts to understand the extent of interaction between Al and TiO2 when the reactant surfaces are in contact at elevated temperature and normal atmospheric pressure. The interfacial region between the reactant compounds is examined using analytical techniques; and the formation of TiAl as the interfacial compound is described. The thermodynamics of the

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19

Khalfalla, Hamza Abdulmagid. "Modelling and optimisation of oxidative desulphurization process for model sulphur compounds and heavy gas oil : determination of rate of reaction and partition coefficient via pilot plant experiment : modelling of oxidation and solvent extraction processes : heat integration of oxidation process : economic evaluation of the total process." Thesis, University of Bradford, 2009. http://hdl.handle.net/10454/4247.

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Heightened concerns for cleaner air and increasingly more stringent regulations on sulphur content in transportation fuels will make desulphurization more and more important. The sulphur problem is becoming more serious in general, particularly for diesel fuels as the regulated sulphur content is getting an order of magnitude lower, while the sulphur contents of crude oils are becoming higher. This thesis aimed to develop a desulphurisation process (based on oxidation followed by extraction) with high efficiency, selectivity and minimum energy consumption leading to minimum environmental impac

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20

Ngeleka, Tholakele Prisca. "An investigation into the feasibility of applying the watergas shift process to increase hydrogen production rate of the hybrid sulphur process / T.P. Ngeleka." Thesis, North-West University, 2008. http://hdl.handle.net/10394/4108.

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An investigation was undertaken to determine the feasibility of increasing the hydrogen production rate by coupling the water gas shift (WGS) process to the hybrid sulphur process (HyS). This investigation also involved the technical and economical analysis of the water gas shift and the H2 separation by means of Pressure swing adsorption (PSA) process. A technical analysis of the water gas shift reaction was determined under the operating conditions selected on the basis of some information available in the literature. The high temperature system (HTS) and low temperature system (LTS) reactor

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21

Mezughi, Khaled M. "Heterogeneous photocatalytic degradation of organic pollutants in water over nanoscale powdered titanium dioxide. The photocatalytic degradation of organic compounds in water (Reactive Orange 16, Triclocarbon, Clopyralid and Estrogens (estrone, 17ß-estradiol, and 17α-ethinylestradiol)) was studied; the reaction kinetics and the effect of the operating parameters on the performance of the system were determined; a comparison with other advanced oxidation processes (O3, H2O2, UV) was also made". Thesis, University of Bradford, 2010. http://hdl.handle.net/10454/4865.

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Organic contaminants from industrial and/or domestic effluents may be harmful to humans directly or indirectly by degrading the quality of the aquatic environment. Consequently these contaminants must be reduced to levels that are not harmful to humans and the environment before disposal. Chemical, physical and biological methods exist for the removal of these pollutants from effluents. Among the available chemical methods, heterogeneous photocatalytic oxidation has been found particularly effective in removing a large number of persistent organics in water. In this study, photocatalytic degra

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22

Mezughi, Khaled M. "Heterogeneous photocatalytic degradation of organic pollutants in water over nanoscale powdered titanium dioxide : the photocatalytic degradation of organic compounds in water (Reactive Orange 16, Triclocarbon, Clopyralid and Estrogens (estrone, 17ß-estradiol, and 17α-ethinylestradiol)) was studied : the reaction kinetics and the effect of the operating parameters on the performance of the system were determined; a comparison with other advanced oxidation processes (O₃, H₂O₂, UV) was also made". Thesis, University of Bradford, 2010. http://hdl.handle.net/10454/4865.

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Organic contaminants from industrial and/or domestic effluents may be harmful to humans directly or indirectly by degrading the quality of the aquatic environment. Consequently these contaminants must be reduced to levels that are not harmful to humans and the environment before disposal. Chemical, physical and biological methods exist for the removal of these pollutants from effluents. Among the available chemical methods, heterogeneous photocatalytic oxidation has been found particularly effective in removing a large number of persistent organics in water. In this study, photocatalytic degra

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23

You, Sheng Mu. "Metal organic frameworks as efficient photosensitizer for TiO₂ nanoarray anode and application to water splitting in PEC cells Fe/Ni Bimetallic organic framework deposited on TiO₂ nanotube array for enhancing higher and stable activity of oxygen evolution reaction Novel nano-architectured water splitting photoanodes based on TiO₂-nanorod mats surface sensitized by ZIF-67 coatings Surface sensitization of TiO₂ nanorod mats by electrodeposition of ZIF-67 for water photo-oxidation Electrochemically capacitive deionization of copper (II) using 3D hierarchically reduced graphene oxide architectures." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASF015.

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Les réserves de combustibles fossiles diminuent et leur utilisation illimitée depuis la révolution industrielle a généré de profonds changements du climat, notamment des cycles de la température atmosphérique. Stocker l'énergie solaire sous forme d'hydrogène produit par dissociation de l'eau est un moyen idéal pour combattre le réchauffement climatique. Les matériaux de la famille des «metal organic framework» (MOF) commencent à être utilisés comme photo-électrocatalyseurs, notamment pour la photo-dissociation de l'eau. Leur porosité extrêmement élevée et leur grande polyvalence, tant chimique

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24

Aurousseau, Marc. "Étude d'un procédé électrochimique de dépollution d'effluents gazeux contenant du dioxyde de soufre et des oxydes d'azote, par voie directe ou indirecte à l'aide du couple Redox Ce(III)/Ce(IV)." Vandoeuvre-les-Nancy, INPL, 1994. http://www.theses.fr/1994INPL138N.

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Dans le cadre de la lutte contre la pollution atmosphérique, la réduction des émissions de dioxyde de soufre (SO2) et d'oxydes d'azote (NOx) est une des préoccupations majeures des pays industrialisés. L’objectif de ce travail est de proposer et d'étudier un procédé de dépollution, d'effluents gazeux contenant ces espèces polluantes, par voie humide conduisant à la production de produits valorisables, des solutions concentrées et séparées des acides correspondants dans le cas présent. Deux voies électrochimiques ont été prospectées et développées. La première repose sur la mise en œuvre du cou

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25

Steyn, Marthinus Hendrik. "Pt and Au as electrocatalysts for various electrochemical reactions / Marthinus Hendrik Steyn." Thesis, 2015. http://hdl.handle.net/10394/15579.

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In this study the focus was on the electrochemical techniques and aspects behind the establishment of the better catalyst (platinum or gold) for the sulphur dioxide oxidation reaction (SDOR). One of the primary issues regarding the SDOR is the catalyst material, thus the comparative investigation of the performance of platinum and gold in the SDOR, as found in this study. Ultimately, the SDOR could lead to an effective way of producing hydrogen gas, which is an excellent energy carrier. The electrochemical application of the oxygen reduction reaction (ORR) and ethanol oxidation reaction (EOR)

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26

Hong, Pui-Kwan Andrew. "Catalytic Oxidation of Sulphur Dioxide by Heterogeneous Cobalt-Phthalocyanine." Thesis, 1988. https://thesis.library.caltech.edu/4459/3/hong_pka_1988.pdf.

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<p>Various homogeneous and hybrid cobalt phthalocyanines were developed. They were shown to be effective catalysts for the catalytic degradation of many aqueous pollutants. The catalytic activity of these systems was attributed to their ability to activate molecular oxygen. Semiconductor titanium dioxide was found to be useful both as solid support and photocatalyst. The electron relay property of cobalt phthalocyanine on the photoactive TiO₂ surface was elucidated. The homogeneous and heterogeneous kinetics and mechanisms for the catalytic oxidation of aqueous sulfur dioxide were studied.</p

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27

Young, Adri. "'n Vergelykende studie tussen Pt en Pd vir die elektro-oksidasie van waterige SO₂ asook ander model elektrochemiese reaksies / Adri Young." Thesis, 2014. http://hdl.handle.net/10394/12104.

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The pressure on clean and sustainable energy supplies is increasing. In this regard energy conversion by electrochemical processes plays a major role, for both fuel cell reactions and electrolysis reactions. The sulphur dioxide oxidation reaction (SOR) is a common reaction found in the Hybrid Sulphur Cycle (HyS) and the HyS is a way to produce large-scale hydrogen (H2). The problem with the use of the HyS and fuel cells is the cost involved as large amounts of Pt are required for effective operation. The aim of the study was to determine whether there was an alternative catalyst which was more

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28

Gottfried, Jörg Michael [Verfasser]. "CO oxidation over gold : adsorption and reaction of oxygen, carbon monoxide, and carbon dioxide on an Au(110)-(1x2) surface / von Jörg Michael Gottfried." 2003. http://d-nb.info/967931045/34.

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29

Eliades, John Alexander. "A Radio Frequency Quadrupole Instrument for use with Accelerator Mass Spectrometry: Application to Low Kinetic Energy Reactive Isobar Suppression and Gas–phase Anion Reaction Studies." Thesis, 2012. http://hdl.handle.net/1807/32706.

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A radio frequency (rf) quadrupole instrument, currently known as an Isobar Separator for Anions (ISA), has been integrated into an Accelerator Mass Spectrometry (AMS) system to facilitate anion–gas reactions before the tandem accelerator. An AMS Cs+ sputter source provided > 15 keV ions that were decelerated in the prototype ISA to < 20 eV for reaction in a single collision cell and re-accelerated for AMS analysis. Reaction based isobar suppression capabilities were assessed for smaller AMS systems and a new technique for gas–phase reaction studies was developed. Isobar suppression of 36S– a

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