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Dissertations / Theses on the topic 'Alcohol oxidation'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

But, Yuen-sze Tracy, and 畢婉詩. "Organocatalytic alcohol oxidation and Mitsunobu reactions." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B42182578.

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But, Yuen-sze Tracy. "Organocatalytic alcohol oxidation and Mitsunobu reactions." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B42182578.

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3

Clendenning, Gráinne Margaret Ann. "Developing new Pd (ii) catalysts for alcohol oxidation." Thesis, Queen's University Belfast, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.579691.

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The selective aerobic oxidation of organic molecules has been highlighted as a fundamental and practical challenge for modem chemistry. The oxidation of alcohols is one such challenge. It is a key reaction in the synthesis of many compounds, however rarely implemented in an industrial setting. In the last 20 years Pd(II) complexes modulated with oxidatively stable ligands have emerged as a promising class of catalysts for the reaction. Such Pd(Il) ligated complexes utilise molecular oxygen as the sole oxidant producing benign by- products such as water. Although the work to date has been pione

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4

Choi, Heewon. "Alcohol Oxidation Reactions on Porous PtCu/C Catalysts." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1405352022.

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5

Rogan, Luke. "Transition metal based catalysts for aerobic alcohol oxidation." Thesis, Queen's University Belfast, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709812.

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The selective oxidation of alcohols to the corresponding carbonyl product is an important transformation. Traditionally this reaction has been carried out using stoichiometric oxidants, but such methods are highly undesirable from an environmental viewpoint. In the fine chemical and pharmaceutical industries, oxidative transformations prove problematic, and are often avoided, due to a limited number of existing chemoselective and sustainable oxidation methods. The demand for new, environmentally sustainable and efficient alcohol oxidation methods has driven academic research, and a number of s

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6

Kanno, Hisashi. "In situ alcohol oxidation-transformation reactions using manganese dioxide." Thesis, University of York, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270357.

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7

Lu, Liang. "Investigation of silica supported Pd catalysts for aerobic alcohol oxidation." Thesis, Queen's University Belfast, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.675848.

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Oxidising alcohol to their corresponding carbonyl compound is still a vitally important reaction for the fine chemical and pharmaceutical industries. In this thesis the investigation of the use of Pd(II) catalysts for the oxidation of alcohols using 02 as the terminal oxidant is reported. The initial section describes the investigation of ligand effects on Pd(OAc)2 operating under homogeneous conditions. The examination into the use of different gas mixtures showed that 02/C02 was beneficial due to the formation in situ of alkylcarbonic add by the reaction between C02 and the alcohol substrate

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8

Pedersen, Nicolai. "Oxidation of veratryl alcohol with lignin peroxidase and nanoscale photosystems." Thesis, Uppsala universitet, Institutionen för kemi - BMC, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-355159.

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9

Padayachee, Diandree. "Development of electrocatalysts for glycerol oxidation." Thesis, University of Canterbury. Chemical and Process Engineering, 2013. http://hdl.handle.net/10092/8985.

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Glycerol is a very promising alternative fuel to hydrogen in fuel cells. However, the utilisation of glycerol as a fuel requires a good catalyst, due to the slow kinetics of glycerol electrooxidation. Gold has been identified as a promising catalyst due to its high activity and stability for glycerol electrooxidation – although the overpotentials are higher than on platinum and palladium. Modification of a nano-Au/C catalyst by the addition of MnO2, in an attempt to further improve the activity and lower the overpotential for glycerol oxidation, was therefore first explored. This was followed

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10

Hall, David Wesley. "Benzyl alcohol oxidation in a phase-transfer catalytic microporous contactor reactor." Thesis, University of Newcastle Upon Tyne, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251004.

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11

Indar, Devon. "Oxidation of alcohols using heterogeneous Au/TiO2 catalysts." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/oxidation-of-alcohols-using-heterogeneous-autio2-catalysts(14601b30-96d8-418b-bfb8-107d25490249).html.

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This report summarises the work done on monohydroxy aliphatic alcohol upgrading using Au/TiO2 catalysis. The catalysts were initially tested using a plug-flow CO oxidation reactor; complete conversion of a stream of CO flowing over the catalyst bed at a GHSV of approximately 79,500 hr-1 was typically achieved without any required external heating. TEM analysis showed that the freshly prepared catalyst does not contain detectable Aunano clusters, while the spent CO oxidation catalyst had clearly visible nanoparticles with an average size of approximately 1.6 nm. XRD analyses showed that the fin

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12

Blikstad, Cecilia. "Oxidation of 1,2-Diols Using Alcohol Dehydrogenases : From Kinetic Characterization to Directed Evolution." Doctoral thesis, Uppsala universitet, Institutionen för kemi - BMC, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-208139.

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The use of enzymes as catalysts for chemical transformations has emerged as a “greener” alternative to traditional organic synthesis. An issue to solve though, is that enzymes are designed by nature to catalyze reactions in a living cell and therefore, in many cases, do not meet the requirements of a suitable biocatalyst. By mimicking Darwinian evolution these problems can be addressed in vitro by different types of directed evolution strategies. α-Hydroxy aldehydes and α-hydroxy ketones are important building blocks in the synthesis of natural products, fine chemicals and pharmaceuticals. In

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13

Alsoqyani, Faihan Saleh. "Supercritical water oxidation of nitrogen-containing organic compounds : process enhancement using isopropyl alcohol." Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7296/.

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The research in this thesis aimed to study efficiency and viability of supercritical water oxidation (SCWO) technology in treating diluted N,N-dimethylformamide (DMF), 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) and ammonia containing model wastewaters that were selected due to their hazard, wide usage in industry and having different degrees of refractoriness. A lab-scale SCWO tubular reactor was operated to obtain necessary data to investigate the destruction of selected compounds at certain operating conditions in addition to studying the oxidation kinetics of DMF and DBU. Also, Isopropyl Alco

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14

Liu, Jialong. "Insight into selective oxidation of alcohol on Au-Pd catalysts : a DFT study." Thesis, Queen's University Belfast, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.675668.

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First-principles calculations within the density functional theory (DFT) framework were used to investigate selective oxidation of alcohol on Au-Pd catalysts. The selective oxidation of benzyl alcohol and 1 ,2-propanediol were studied, concerning mainly on the activity and selectivity, respectively.

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15

Lundin, Jakob. "Manipulation of the pH Dependence of the Propandiol Dehydrogenase, FucO, Catalyzed Alcohol Oxidation." Thesis, Uppsala universitet, Institutionen för kemi - BMC, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-235129.

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16

Dumbre, D. K. "Selective liquid phase alcohol oxidation and heck- type coupling reactions using heterogeneous catalysts." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2008. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2701.

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17

Carbo, Lopez Marta. "Nitroxydes chiraux à squelette imidazolidin-4-one comme catalyseurs d'oxydation énantiosélective d'alcools par O2." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENV069/document.

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L'objectif de cette thèse était d'évaluer des nitroxydes chiraux à squelette imidazolidin-4-one comme catalyseurs d'oxydation énantiosélective d'alcools par le dioxygène. Pour cela, plusieurs nitroxydes avec différents substituants en position α ont été synthétisés afin de voir les effets possibles de chacun des groupements. Différents co-catalyseurs décrits dans la bibliographie ont été testés afin de faire ces réactions qui ont lieu à température ambiante et pression atmosphérique. Ces systèmes catalytiques peuvent se différencier selon s'ils utilisent ou pas de métal comme additif.La straté

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18

Akbayrak, Serdar. "Synthesis And Characterization Of Osmium(0) Nanoclusters And Their Catalytic Use In Aerobic Alcohol Oxidation." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12612953/index.pdf.

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Transition metal nanoclusters are more active and selective catalysts than their bulk counterparts as the fraction of surface atoms increases with the decreasing particle size. When stabilized in organic or aqueous solutions, they can catalyze many reactions. The catalytic activity of metal nanoclusters depends on the particle size and size distribution. Particle size can be controlled by encapsulating the nanoclusters in the cavities of highly ordered porous materials such as zeolites. In this project, osmium(0) nanoclusters were formed within the void spaces of zeolite. Thus, nanoclusters of

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19

Klaas, Lutho Attwell. "Synthesis and characterization of binary Palladium based electrocatalysts towards alcohol oxidation for fuel cell application." University of the Western Cape, 2018. http://hdl.handle.net/11394/6448.

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Magister Scientiae - MSc (Chemistry)<br>The anode catalyst is one of the important parts of the direct alcohol fuel cell (DAFC); it is responsible for the alcohol oxidation reaction (AOR) takes place at the anode side. Pd has been reported to have good alcohol oxidation reactions and good stability in alkaline solution. Better stability and activity has been reported for Pd alloyed catalysts when compared to Pd. Choosing a suitable alcohol also has an effect on the activity and stability of the catalyst. This study investigates the best catalyst with better AOR and the best stability and also

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20

李偉安 and Wai-on Lee. "Oxidation chemistry and electrochemistry of ruthenium and chromium complexes of macrocyclic tertiary amines and aromatic diimines." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1989. http://hub.hku.hk/bib/B31231846.

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21

Lee, Wai-on. "Oxidation chemistry and electrochemistry of ruthenium and chromium complexes of macrocyclic tertiary amines and aromatic diimines /." [Hong Kong : University of Hong Kong], 1989. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12505286.

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22

Araújo, Lidiane da Silva. "Busca de álcool desidrogenases para aplicação em oxidação enantiosseletiva de álcoois." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/46/46135/tde-08112010-091001/.

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Diante da biodiversidade de micro-organismos existentes na natureza e da necessidade de descobrir novos biocatalisadores para a síntese de bloco de construções quirais e de produtos químicos de alto valor agregado, o presente trabalho teve como objetivo realizar a bioprospeção de micro-organismos para aplicação em reações de oxidação enantiosseletiva de álcoois. Os micro-organismos foram obtidos pelo processo de isolamento induzido de amostras de solo/sedimento coletadas no Parque Estadual Turístico do Alto Ribeira (PETAR) e na Antártica. A partir das amostras coletadas (43 de solo e 13 de sed

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23

Bian, Yan. "Durabilité des géosynthétiques en Poly(alcool vinylique)." Thesis, Paris, ENSAM, 2019. http://www.theses.fr/2019ENAM0024/document.

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Ce travail de thèse repose principalement sur l’étude de l’impact des facteurs environnementaux (température, humidité, pH) sur le vieillissement des fils de HT-PVAl destinés à la conception des bandes géosynthétiques. Les objectifs étaient d’identifier les produits, les mécanismes et les cinétiques de dégradation, et de déterminer l’impact du vieillissement sur la structure chimique, les propriétés physiques et mécaniques des fils. Il s’agissait aussi de proposer une méthodologie générale d’étude de la durabilité des produits géosynthétiques à base de fils de HT-PVAl. Ces derniers sont sujets

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24

Hektor, Harm Jan. "Physiology and biochemistry of primary alcohol oxidation in the gram-positive bacteria "amycolatopsis methanolica" and "bacillus methanolicus"." [S.l. : [Groningen] : s.n.] ; [University Library Groningen] [Host], 1997. http://irs.ub.rug.nl/ppn/158492587.

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25

Maumau, Rebecca. "Synthesis of binary and ternary Pd-based Nanocatalysts for alcohol oxidation in alkaline media for fuel cell application." University of the Western Cape, 2020. http://hdl.handle.net/11394/7731.

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>Magister Scientiae - MSc<br>This study explores the use of UV-assisted reduction method to synthesise the catalysts, aiming at reducing synthesis time. The Pd and Au catalyst loading is kept at 5 wt% in order to reduce the cost associated with high loading (20 wt%) of platinum group metals. The synthesised catalysts have SnO2 incorporated in them for two purposes, one being to activate the chemical reaction by absorbing UV-light and the second one is to serve as a promoter for binary and ternary catalysts. All the synthesised electrocatalysts in this study were denoted as Au/10wt%SnO2-C, Au/1

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26

Rodríguez, Hinestroza Rossmery Anaid. "Studies on the oxidative ability of horse liver alcohol dehydrogenase and its cofactor regeneration." Doctoral thesis, Universitat Autònoma de Barcelona, 2014. http://hdl.handle.net/10803/284928.

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El estudio del uso de las enzimas como catalizadores industriales se ha incrementado en las últimas décadas debido a que éstas ofrecen muchas ventajas, tales como: su capacidad para aceptar un amplio rango de sustratos, su alta especificidad y selectividad y permiten el uso de condiciones suaves de operación. Uno de los campos de aplicación más prometedores es la producción de compuestos con actividad biológica para fines terapéuticos. Esta tesis doctoral es una contribución en la investigación de la enzima alcohol deshidrogenasa de hígado de caballo (HLADH) como biocatalizador, específicam

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27

Ballester, Jorge. "Nouvelles méthodes éco-compatibles : synthèse de molécules phosphorées par catalyse au cuivre ou réaction de Wittig. Application en réaction d'arylation de nucléophiles. : oxydation d'alcools catalysée par des métaux alcalins." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2012. http://www.theses.fr/2012ENCM0019.

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Ce travail de thèse se divise en trois parties. Dans un premier temps, nous avons mis au point une nouvelle méthode simple et efficace de synthèse d'arylphosphonates, aryphosphinates et arylphosphines, faisant appel à un système catalytique au cuivre.Dans un second temps, nous nous sommes intéressés à la synthèse, à partir des sels de phosphonium correspondants, de diylures azotés ou carbonés du phosphore. A partir de ces derniers une méthode de synthèse de phosphines vinyliques ou butadiéniques, difficiles à obtenir par d'autres voies, a été mise au point. Ces phosphines se sont avérées être

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28

Kotze, Hendrik de Vries. "Immobilized diimine complexes of palladium and copper as catalyst precursors for oxidation reactions." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6721.

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Thesis (MSc)--University of Stellenbosch, 2011.<br>ENGLISH ABSTRACT: In this thesis the synthesis of a wide range of model and siloxane functionalized N-(n-propyl)-1-(2-pyridyl and quinolyl)-imine ligands (L1-L6) are described. Functionalized ligands (L4-L6) were obtained by the reaction of the pyridyl and quinolyl aldehydes with 3-aminopropyltriethoxysilane. Model ligands were characterized by FT-IR and 1H NMR spectroscopy while 13C{1H} NMR spectroscopy was additionally used for functional ligand characterization. Functionalized complexes of both Pd(II) and Cu(I) were found to be more t

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29

Pallikarana, Tirumala Harini. "Role of mitochondrial beta-oxidation in ethanol response: A candidate gene study using Caenorhabditis elegans." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/4993.

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Alcohol use disorder (AUD) is the fourth leading cause of preventable death in the United States, and the fifth leading risk factor for premature death and disability, globally. There are currently very few treatment options for AUD and there is a need for effective preventive and treatment strategies for this condition. AUD risk has a significant hereditary component, with the contribution of genetic factors being estimated to be about 50%. The Davies-Bettinger laboratory uses C. elegans as a model organism to study the contribution of genetic factors in modulating neuronal responses to ethan

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30

Weerathunga, Kaluarachchige Don H. "Metal nanoparticle and semiconductor heterogeneous catalysis for synthetic organic oxidation reactions." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/228677/1/Kaluarachchige%20Don_Weerathunga_Thesis.pdf.

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This thesis investigated new metal nanoparticle and semiconductor catalyst and photocatalyst systems for achieving fine chemical synthesis from both fossil-fuel sourced reactants and biomass carbohydrate-derived reactants. Photocatalysts for industrially important organic oxidation reactions were developed that efficiently worked with the aid of solar light irradiation, at low temperature and pressure, that avoided the use of hazardous chemicals. The effects on the organic reaction mechanisms of different noble metal nanoparticle and metal oxide nanostructures were explored for these chemical

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31

Benyounes, Anas. "Synthèse de nanotubes de carbonne dopés à l'azote et leur application catalytique." Thesis, Toulouse, INPT, 2016. http://www.theses.fr/2016INPT0032/document.

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L'objectif de ce travail est la synthèse et l'étude des propriétés acido-basiques de nanotubes de carbone (CNT) dopés à l’azote pour les utiliser comme catalyseurs ou supports de catalyseurs. Pour ce faire, trois types de nanotubes de carbone dopés à l'azote ont été synthétisés, caractérisés et testés dans la conversion de l'alcool isopropylique. Les nanotubes de carbone dopés diffèrent par le taux d’azote et la présence ou non d'une section non dopée dans leur structure. Pour les matériaux à faible teneur en azote, la réaction conduit à la formation d'acétone indiquant la présence de sites ba

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32

Söderlind, Andreas. "Characterization of Laboratory Evolved Alcohol Dehydrogenase A Variant Through Oxidation of Disubstituted Propane Diol for Enzyme Structure Function Relationship Studies." Thesis, Uppsala universitet, Institutionen för kemi - BMC, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-297947.

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33

Paruchuri, Divya. "Conversion of hardwoods to ethanol design and economics of delignification and enzyme recycling /." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26657.

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Thesis (M. S.)--Chemical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Muzzy, John; Committee Member: Frederick, Jim; Committee Member: Realff, Matthew. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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34

Zavahir, Fathima Sifani. "Development of visible light photocatalysts for organic fine chemical production." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/96049/1/Fathima%20Sifani_Zavahir_Thesis.pdf.

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Devising new photocatalysts that can harvest light energy to drive chemical processes is in the forefront of chemical research. It aims at limiting the use of depleting fossil fuel energy, better understanding optical properties of materials and developing green chemical synthesis processes. During this doctoral work, three different types of photocatalysts, based on titanium dioxide, gold nanoparticles and vanadium clusters, have been designed and evaluated for synthetically important organic chemical reactions under visible light irradiation at near ambient conditions.

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35

Yang, Die Daisy, and 楊蝶. "Development of polymers for electroplating waste water purification, polymer-supported reagents for organic synthesis and heterogeneouscatalysts for aerobic alcohol oxidation reactions." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B39848887.

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36

Wilbers, Derik. "Preparation, characterization and applications of macrocycle-dendrimer conjugates." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85568.

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Thesis (MSc)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: In this thesis we describe various attempts at incorporating macrocycles into dendritic architectures to form macrocycle-dendrimer conjugates with the aim of preparing materials that would exhibit properties that are more than the sum of the constituent parts, in this case macrocycles and dendrimers. A further aim was the synthesis and characterization of metallodendrimers based on such scaffolds and to test these as catalyst precursors in the catalytic oxidation of alcohols. The synthesis of two different types of conjuga

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Yang, Die Daisy. "Development of polymers for electroplating waste water purification, polymer-supported reagents for organic synthesis and heterogeneous catalysts for aerobic alcohol oxidation reactions." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B39848887.

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38

Roberts, Felicity Jane. "Kinetic studies of alcohol oxidation to methyl esters and amides catalysed by gold nanoparticles on titania (Au/TiO2) in continuous flow systems." Thesis, Imperial College London, 2017. http://hdl.handle.net/10044/1/45385.

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Methyl esters and amides are valuable compounds in fine chemicals synthesis, with methyl esters used in flavourings and perfumes, while amides are used in many industries from polymers to pharmaceuticals. Alcohols are desirable starting materials as they can be sustainably sourced, however both methyl ester synthesis from alcohols and methanol, and amide synthesis from alcohols and amines conventionally involve wasteful processes using stoichiometric quantities of metal oxidants and other toxic reagents. In this project a greener synthesis route was developed and studied for each reaction, emp

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Dawood, Abdulsattar Y. "Study on the Effect of γ-Ray Irradiation and Oxidation Pretreatment on the Pyrolysis of Polypropylene (PP) and Poly (Vinyl Alcohol) (PVA)". 京都大学 (Kyoto University), 2002. http://hdl.handle.net/2433/149827.

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40

Fan, Fan. "On the Catalytic Mechanism of Choline Oxidase." Digital Archive @ GSU, 2006. http://digitalarchive.gsu.edu/biology_diss/1.

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Choline oxidase catalyzes the four-electron oxidation of choline to glycine betaine, a limited number of compounds that accumulate to high levels in cytoplasm to prevent dehydration and plasmolysis in adverse hyperosmotic environments. With this respect, the study of choline oxidase has potential for the development of therapeutic agents that inhibit the biosynthesis of glycine betaine, thereby rendering pathogenic bacteria susceptible to either conventional treatments or the immune system. In this study, the highly GC rich codA gene encoding for choline oxidase was cloned, expressed. The resu

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Souza, Elson Almeida de. "Estudo eletroquímico da reação de oxidação de etanol em células a combustível do tipo DEFC." Universidade Federal do Amazonas, 2014. http://tede.ufam.edu.br/handle/tede/3157.

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Made available in DSpace on 2015-04-22T19:34:51Z (GMT). No. of bitstreams: 1 Elson Souza.pdf: 3229647 bytes, checksum: f4466e739d1f2b0c695acfa5d461bf32 (MD5) Previous issue date: 2014-01-30<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>This work is about the electrochemical and spectroelectrochemical study of the oxidation reaction of ethanol for use in fuel cells operating with direct ethanol (DEFC). Ethanol as a fuel, beyond less toxic compared to methanol, has high availability in Brazil, is therefore most suitable its use as fuel. Its main limitation is the for

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42

Ansaloni, Simone. "Oxidative properties of the Iron - Thymine-1-acetic acid - Hydrogen peroxide catalytic system." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/4937/.

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The oxidation of alcohols and olefins is a pivotal reaction in organic synthesis. However, traditional oxidants are toxic and they often release a considerable amounts of by-products. Here, two IronIII-based systems are shown as oxidative catalyst, working in mild conditions with hydrogen peroxide as primary oxidant. An efficient catalytic system for the selective oxidation of several alcohols to their corresponding aldehydes and ketones was developed and characterized, [Fe(phen)2Cl2]NO3 (phen=1,10-Phenantroline). It was demonstrated that the adoption of a buffered aqueous solution is of cruc

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Jonke, Alex P. "Atomic metal/polyaniline composites." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49070.

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It is ideal to theoretically predict the activity of a catalyst. It has been recognized that not only the type of metal, but also its atomic size plays an important role in catalysis. In the past, atomic clusters have been created by sputtering from a sacrificial metal plate and then using a mass selector to choose cluster sizes from 1-233 atoms of gold. This approach has practical limitations. In this thesis, I describe a procedure by which atomic clusters of gold containing 1-8 atoms are deposited in polyaniline as an isolation matrix. My atomic deposition follows a cyclic pathway. Atom

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Hoppe, Elke. "Oxovanadiumcalixaren-Komplexe als Molekülmodelle für katalytisch aktive Oberflächenspezies und als homogene Oxidationskatalysatoren." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2007. http://dx.doi.org/10.18452/15649.

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Abstract Zur Modellierung einer Oxidoberfläche wurden p-tert-Butylcalix[4]aren (H4CA[4]), Dimethyl-p-tert-butylcalix[4]aren (H2Me2CA[4]), p-tert-Butylcalix[8]aren (H8CA[8]) und p-tert-Butylthiacalix[4]aren (H4TC) eingesetzt. Es gelang die Synthese von unterschiedlichen mono- und dinuklearen, geladenen und ungeladenen Oxovanadium(V)-verbindungen. Die Verbindungen [CA[4]V=O]- (4), [AcOCA[4]V=O] (5), [HCA[8](V=O)2]- (6), [Me2CA[4](µ-O)(V(O)OMe)2] (7), [CA[8](µ3-O)2V4O4] (8a/8c), [(H2TC)VOCl2]- (9) und [{(H2TC)V(O)(µ2-O)}2]2- (10) wurden als Katalysatoren für die Oxidation von Alkoholen in Gegen

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Bergamaski, Kleber. "\"Dependência da seletividade da reação de eletro-oxidação de metanol e etanol sobre nanopartículas de Pt/C e PtRh/C\"." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/75/75131/tde-18042007-095129/.

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A eletro-oxidação de metanol e etanol é um tema ativamente estudado em eletrocatálise. O motivo da grande atenção dada à investigação da atividade eletrocatalítica destes álcoois é devido à procura de novos sistemas conversores de energia mais eficientes e menos poluidores. As pesquisas em eletrocatálise têm sido direcionadas também ao estudo de sistemas nanoparticulados. Partículas metálicas de tamanho nanométrico oferecem aspectos interessantes no estudo de efeitos estruturais em eletrocatalisadores dispersos. O decréscimo do tamanho de partícula promove uma utilização mais eficiente do cata

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Ratajczak, Fabien. "Synthèse et réactivité de nitroxydes chiraux." Université Joseph Fourier (Grenoble), 1997. http://www.theses.fr/1997GRE10134.

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Les nitroxydes sont des radicaux libres qui sont reduits en hydroxylamine ou oxydes en sel d'oxoammonium par des processus monoelectroniques reversibles. Les sels d'oxoammonium formes in situ oxydent notamment les alcools primaires et secondaires dans des conditions douces, catalytiques, et sont chimio et regioselectifs. Pour tester leurs potentialites en synthese asymetriques, deux methodes de synthese de nitroxydes chiraux a axe de symetrie c#2 ont ete mises au point. La premiere methode, originale, met en jeu la formation de dienolates en ,' d'aminodiesters suivie de leur reaction avec des

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Ghadamgahi, Sedigheh. "Size, Shape and Support Effects on the Catalytic Activity of Immobilized Nanoparticles." Thesis, University of Canterbury. Chemistry, 2014. http://hdl.handle.net/10092/10042.

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Abstract: A brief overview of this PhD thesis, The emergence of nanotechnology has stimulated both fundamental and industrially relevant studies of the catalytic activity of noble metal nanoparticles. Palladium, ruthenium and gold are well known catalysts when used in nanoparticle- based systems. This body of work endeavoured to investigate the catalytic activity of these noble metal nanoparticles through three studies as a briefly overviewed below. Study 1: Palladium is a well-known catalyst, even in bulk phases, but its high cost had driven industry towards its use in nanoparticle- based sy

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Oloye, Olawale. "Design and engineering of nanostructured liquid metal composites for catalytic applications." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/227405/1/Olawale_Oloye_Thesis.pdf.

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This thesis concentrated on the study of the room temperature liquid metal, gallium and its eutectics. The application of liquid metal-based alloys to new areas of catalysis was extended by encompassing energy and environmental applications. A significant advancement in the potential application of liquid metal-based alloys in electrocatalysis, photocatalysis and sonocatalysis has resulted from this research. Significantly, research conducted on carbon dioxide capture/conversion to metal carbonates during this graduate study is currently being explored for industrial waste management.

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Guo, Penghu [Verfasser], Martin [Gutachter] Muhler, and Yuemin [Gutachter] Wang. "Defect-engineered metal-organic framework HKUST-1 and its composites : synthesis, characterization and application in alcohol oxidation / Penghu Guo ; Gutachter: Martin Muhler, Yuemin Wang ; Fakultät für Chemie und Biochemie." Bochum : Ruhr-Universität Bochum, 2019. http://d-nb.info/1191481492/34.

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CRISAFULLI, RUDY. "Preparação de eletrocatalisadores PtSnCu/C e PtSn/C e ativação por processos de Dealloying para aplicação na oxidação eletroquímica do Etanol." reponame:Repositório Institucional do IPEN, 2013. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10183.

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Made available in DSpace on 2014-10-09T12:35:43Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:03:54Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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