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Dissertations / Theses on the topic 'Silver. Silver alloys. Oxidation'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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1

McLeod, Ian. "Epitaxial growth of lead and bismuth on silver and silver rich alloys." Thesis, University of Liverpool, 2014. http://livrepository.liverpool.ac.uk/16213/.

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The growth of Bi on Ag(111) induces different surface structures, including(√3×√3)R30°surface alloy, Bi-(p×) overlayer and Bi(110) thin film as a function of increasing Bi coverage. These structures have been studied using low-temperature scanning tunneling microscopy, low-energy electron diffraction, ab initio calculations and photoemission spectroscopy from core-levels and valence bands at room temperature. At 1/3 of a monolayer of Bi on Ag(111) leads to the formation of BiAg2 surface alloy with a long range ordered (√3×√3)R30° superstructure. A detailed analysis of this structure using LEED

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2

Snell, Robert. "The development of novel silver brazing alloys." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/19644/.

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This research was primarily focussed on finding novel silver brazing alloys. The first alloy development method used to achieve this goal was a CALPHAD-based approach. This was used to predict melting temperatures and the intermetallic content of alloys. The method was developed and then applied to a commonly used silver brazing alloy. An alternative method was developed based on High Entropy Alloys (HEAs).

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3

Lau, Aaron. "Oxidation of soot with modified silver catalysts." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:138e06c2-ce59-4754-a71a-d2dc0c52ecbe.

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As the demand for motor vehicles has soared dramatically with the emergence of rapidly developing countries, the need for regulating vehicle emissions and pollutants is increasingly more important. With the newest regulations for diesel particulate emissions soon to be enforced, there is a great need to catalytically convert soot particles from the exhaust into relatively less polluting carbon dioxide. Here a supported silver catalyst is reported for the soot oxidation reaction. The silver catalyst is protected and supported using various capping agents and metal oxides, and modified using var

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4

McLeod, Logan Scott. "Hydrogen permeation through microfabricated palladium-silver alloy membranes." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/31672.

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Thesis (Ph.D)--Mechanical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Fedorov, Andrei; Committee Co-Chair: Degertekin, Levent; Committee Member: Koros, William; Committee Member: Liu, Meilin; Committee Member: Mayor, J. Rhett. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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5

Yu, Bin. "Development of silver nanocatalyst for propylene selective oxidation reaction." Thesis, University of Oxford, 2018. http://ora.ox.ac.uk/objects/uuid:0f3f0556-bff1-4af1-bfe0-0e62b0425bff.

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Propylene is the second most important starting chemical in the petrochemical industry after ethylene. Unlike ethylene, propylene readily undergoes substitution reactions including polymerisation, oxidation, halogenation, hydrohalogenation, alkylation, hydration, oligomerization and hydroformylation, which lead to a wide variety of important downstream products. One of the principal uses of propylene is to produce key chemicals from selective oxidation. In 2016, the world annual production of propylene is about 94 million tonnes, and the global proportion used to produce selective oxidation pr

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6

Kanbertay, Elif. "Synthesis Of Dopamine Functionalized Silver Nanoparticles Together With Possible Interactions Between Silver And Dopamine Having Different Oxidation Forms." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615658/index.pdf.

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Dopamine is a neurotransmitter found in central nerve system which has a vital role for human health. Dopamine oxidation in body is an important issue since it may form reactive metabolites which can be toxic to the cell. Surface-enhanced Raman scattering (SERS) is currently recognized as one of the most sensitive spectroscopic tools, which can be exploited for ultrasensitive chemical and biological detection, addition to providing structural information on the systems of interest. SERS of dopamine displays three strong bands at 1269, 1331 and 1479 cm-1. These bands are the signature of dopami

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7

Crowell-Hilde, Kaki D. "There is a silver lining." [Johnson City, Tenn. : East Tennessee State University], 2003. http://etd-submit.etsu.edu/etd/theses/available/etd-0701103-123004/unrestricted/Crowell-HildeK072203f.pdf.

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Thesis (M.F.A.)--East Tennessee State University, 2003.<br>Title from electronic submission form. ETSU ETD database URN: etd-0701103-123004. Includes bibliographical references. Also available via Internet at the UMI web site.

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8

Li, Dongfa. "Microstructures and mechanical properties of palladium-silver dental casting alloys." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1143105462.

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9

Qian, Min. "Technical study of the silver catalyzed methanol oxidation to formaldehyde /." Berlin : Logos Verlag Berlin, 2004. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014188297&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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10

Westlake, Michael Angelo 1966. "The oxidation of copper and silver plated copper lead frames." Thesis, The University of Arizona, 1993. http://hdl.handle.net/10150/278279.

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The effects of thin silver films (15-210 angstroms) on the oxidation of copper alloy lead frames has been characterized. Silver films were deposited onto copper lead frames by immersion plating in a bath containing potassium silver cyanide, potassium cyanide, and a mercaptan inhibitor. The thickness of films was measured by microfocus x-ray fluorescence and cross-checked by Rutherford backscattering spectrometry. Lead frames coated with silver films were oxidized at 150 to 200°C in a controlled humidity oven. The amount of oxide formed was measured by an electrolytic reduction technique and cr

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11

Javadekar, Ashay Dileep. "Surface science studies of olefin oxidation on the silver surface." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 131 p, 2009. http://proquest.umi.com/pqdweb?did=1889838931&sid=2&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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12

Schlunke, Anna Delia. "Mechanism and Modelling of the Partial Oxidation of Methanol over Silver." University of Sydney, 2007. http://hdl.handle.net/2123/2013.

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Doctor of Philosophy (PhD)<br>This work involves an experimental and kinetic modelling study of the silver catalysed reaction of methanol to formaldehyde. The motivation for this was the desire to investigate the potential for Process Intensification in formaldehyde production. Formaldehyde production from methanol over silver catalyst is a fast, exothermic process where dilution is used to control heat release, and these properties are both indicators of Process Intensification potential. The process is run adiabatically and produces hydrogen (which is currently burnt). Oxygen is consumed du

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13

Carter, D. "Electrochemical and electron-microscopical studies of anodically corroded silver-gold alloys." Thesis, University of Warwick, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373074.

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14

Ching, Suet Ying. "Plasmonic properties of silver-based alloy thin films." HKBU Institutional Repository, 2015. https://repository.hkbu.edu.hk/etd_oa/194.

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The plasmonic properties of silver-based alloy thin films were studied. Silver-ytterbium (Ag-Yb) and silver-magnesium (Ag-Mg) prepared by thermal co-evaporation were investigated extensively for various thin film properties. The optical properties were intensively analyzed and discussed because the dielectric response of a material is particularly significant in terms of its plasmonic properties. The study of silver-based alloy thin films has been mostly about Ag alloying with other transition metals, but the results of Ag-Yb and Ag-Mg in this work showed that the intensity of plasma resonance

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15

Siler, Cassandra Grace Freyschlag. "Fundamental Studies of Selective Oxidation Reactions on Gold and Silver Surfaces." Thesis, Harvard University, 2014. http://nrs.harvard.edu/urn-3:HUL.InstRepos:13064964.

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This thesis explores the fundamental chemistry of selective oxidation reactions on gold and silver surfaces, developing a predictive framework for oxidative catalysis, which is crucial for rational design of catalytic systems. We begin with an introduction covering the history of precious metal catalyst development, with emphasis on the roles of silver and gold (Chapter 1). Next, we explore selectivity control for oxidative reactions on gold. Specifically, we address the role of coadsorbed oxygen with respect to stability and selectivity control in the reaction of adsorbed acetate (Chapters 2

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16

Leke, Luter. "Methanol oxidation over copper and silver monometallic and bimetallic supported catalysts." Thesis, University of Aberdeen, 2015. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=227099.

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The partial oxidation of methanol to formaldehyde with air as oxidant has been studied with supported monometallic and bimetallic catalysts of copper and silver over a range of temperature and contact times. This was done to investigate the influence the bimetallics could possibly have on either the reaction pathways and/or the product(s) selectivity of the oxidation of methanol. Characterisation of these catalysts was performed by nitrogen adsorption and porosity measurements, XRD, and IR spectroscopy of adsorbed methanol and of adsorbed CO. These results indicated no crystalline phases of th

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17

Bordley, Justin Andrew. "Cubic architectures on the nanoscale: The plasmonic properties of silver or gold dimers and the catalytic properties of platinum-silver alloys." Diss., Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/55025.

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This thesis explores both the optical and catalytic properties of cubic shaped nanoparticles. The investigation begins with the sensing capabilities of cubic metal dimers. Of all the plasmonic solid nanoparticles, single Ag or Au nanocubes exhibit the strongest electromagnetic fields. When two nanoparticles are in close proximity to each other the formation of hot spots between plasmonic nanoparticles is known to greatly enhance these electromagnetic fields even further. The sensitivity of these electromagnetic fields as well as the sensitivity of the plasmonic extinction properties is importa

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18

Xu, Yi-Jun. "Selective oxidation of hydrocarbons using supported gold, silver, copper and bimetallic catalysts." Thesis, Cardiff University, 2006. http://orca.cf.ac.uk/54322/.

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Supported gold catalysts can provide tuneable activity for liquid phase selective oxidation of alkenes, in particular cyclohexene and cis-cyclooctene, using molecular oxygen from air under mild conditions. Selective oxidation can be readily kick-started using a nano-crystalline gold catalyst supported on carbon along with a small amount of TBHP as initiator. Extremely high selectivity, ca. 98%, for partial oxidation products with significant conversion has been obtained using a bismuth-modified gold catalyst for selective oxidation of cyclohexene. In the case of cis-cyclooctene oxidation, high

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19

Zanain, Mabrouk Ali Masaud. "Removal of low concentrations of silver from aqueous solutions using adsorption methods." Thesis, Swansea University, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.678471.

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20

Liu, Zhidan [Verfasser]. "Thermomechanically processed magnesium-silver alloys as antibacterial and biodegradable implant materials / Zhidan Liu." Kiel : Universitätsbibliothek Kiel, 2018. http://d-nb.info/1155420748/34.

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21

Dellamorte, Joseph C. "Investigation of silver based catalysts for ethylene epoxidation high throughput studies and characterization /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 288 p, 2009. http://proquest.umi.com/pqdweb?did=1821286341&sid=9&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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22

Kent, Ronald Douglas. "Controlled Evaluation of Silver Nanoparticle Dissolution Using Atomic Force Microscopy." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/35632.

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Incorporation of silver nanoparticles (AgNPs) into an increasing number of consumer products has led to concern over the potential ecological impacts of their unintended release to the environment. Dissolution is an important environmental transformation that affects the form and concentration of AgNPs in natural waters; however, studies on AgNP dissolution kinetics are complicated by nanoparticle aggregation. Herein, nanosphere lithography (NSL) was used to fabricate uniform arrays of AgNPs immobilized on glass substrates. Nanoparticle immobilization enabled controlled evaluation of AgNP diss

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23

Jiang, Hongjin. "Synthesis of tin, silver and their alloy nanoparticles for lead-free interconnect applications." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/22636.

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Thesis (Ph. D.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2008.<br>Committee Chair: Dr. C. P. Wong; Committee Member: Dr. Boris Mizaikoff; Committee Member: Dr. Rigoberto Hernandez; Committee Member: Dr. Z. John Zhang; Committee Member: Dr. Z.L. Wang.

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24

Athavale, Saurabh. "Effect of Cu concentration and cooling rate on microstructure of Sn-3.9Ag-XCu." Diss., Online access via UMI:, 2006.

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25

Recchi, Carlo. "Selective photo-oxidation of glucose." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7650/.

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Biomass transformation into high-value chemicals has attracted attention according to the “green chemistry” principles. Low price and high availability make biomass one of the most interesting renewable resources as it provides the means to create sustainable alternatives to the oil-derived building blocks of the chemical industry In recent year, the need for alternative environmentally friendly routes to drive chemical reactions has in photocatalytic processes an interesting way to obtain valuable chemicals from various sources using the solar light as energy source. The purpose of this work

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26

Sanli, Yurdanur. "Characterization of the interface between prefabricated dental implant component and cast dental alloys." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1168720214.

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27

Ke, Xing. "Atomistic Simulation Studies Of Grain-Boundary Segregation And Strengthening Mechanisms In Nanocrystalline Nanotwinned Silver-Copper Alloys." ScholarWorks @ UVM, 2019. https://scholarworks.uvm.edu/graddis/995.

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Silver (Ag) is a precious metal with a low stacking fault energy that is known to form copious nanoscale coherent twin boundaries during magnetron sputtering synthesis. Nanotwinned Ag metals are potentially attractive for creating new interface-dominated nanomaterials with unprecedented mechanical and physical properties. Grain-boundary segregation of solute elements has been found to increase the stability of interfaces and hardness of nanocrystalline metals. However, heavily alloying inevitably complicates the underlying deformation mechanisms due to the hardening effects of solutes, or a ch

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28

Benedict, Michael Scott. "Heterogeneous nucleation of Sn in Sn-Ag-Cu solder joints." Diss., Online access via UMI:, 2007.

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29

Taylor, Shannon L. S. B. Massachusetts Institute of Technology. "An investigation of the mechanical and physical properties of copper-silver alloys and the use of these alloys in Pre-Columbian America." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/80903.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2013.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>"June 2013." Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (p. 94-96).<br>In both the Andean zone of South America and in Mesoamerica, copper-silver alloys were important in the production of thin, silver-colored sheet metal artifacts. This thesis examines the mechanical and physical propertie

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30

Hoppe, Sandra [Verfasser]. "Surface properties of silver-gold alloys – a quantum mechanics-based approach combining theory and experiment / Sandra Hoppe." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2020. http://d-nb.info/1219141623/34.

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31

ISHII, HENRIQUE A. "Elaboracao de ligas Ag-Sn-Cu para amalgama dentario por moagem de alta energia." reponame:Repositório Institucional do IPEN, 2003. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11101.

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Made available in DSpace on 2014-10-09T12:48:21Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:57:22Z (GMT). No. of bitstreams: 1 08713.pdf: 6496941 bytes, checksum: 5803cb14028b4639afbb59fbc4cfa0d0 (MD5)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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32

Crites, Charles-Oneil. "Investigating the Interactions between Free Radicals and Supported Noble Metal Nanoparticles in Oxidation Reactions." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/33404.

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This thesis studies the interaction between free radical species and supported noble metal nanoparticles (silver and gold) in the context of oxidation reactions. The peroxidation of cumene is the first reaction to be discussed and the difference in peroxidation product distribution using silver nanoparticles (AgNP) versus gold nanoparticles (AuNP) is examined. Specifically, cumyl alcohol is obtained as the major product obtained when using supported AuNP, whereas cumene hydroperoxide is favoured for AgNP. Such variations in product distribution are partially explained by the differences in the

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33

Kinyanjui, Robert. "Thermal processes and solidification kinetics of evolution of the microstructure of Sn-xAg-yCu solder alloys." Diss., Online access via UMI:, 2005.

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Thesis (Ph. D.)--State University of New York at Binghamton, Thomas J. Watson School of Engineering and Applied Science, Multidisciplinary Program in Materials Science and Engineering, 2005.<br>Includes bibliographical references.

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34

Baloyi, Liberty Ntshuxeko. "The production of hydrogen from the water gas shift reaction through the use of a palladium-silver membrane reactor." Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2470.

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Thesis (MTech (Chemical Engineering))--Cape Peninsula University of Technology, 2016.<br>The Water Gas Shift (WGS) reaction describes the reaction between carbon monoxide and water vapour to produce carbon monoxide and hydrogen. This work describes the application of a Palladium-Silver (Pd-Ag)-based membrane film reactor, wherein the Pd-Ag film was supported by porous stainless steel (PSS), for the potential replacement of the current multi-stage WGS reaction. The objective of this work was to develop a better understanding of impediments which are relevant to the application of Pd-Ag membrane

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35

Tselepis, Efstathios. "Preparation and study of electro-optical properties of oxide films of silver, copper and their alloys using the photovoltaic effect." Thesis, University of Ottawa (Canada), 1988. http://hdl.handle.net/10393/5473.

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36

Lombardi, Erica. "Selective photo-oxidation of cellobiose with tio2-supported metal nanoparticles." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/6017/.

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Upgrade of biomass to valuable chemicals is a central topic in modern research due to the high availability and low price of this feedstock. For the difficulties in biomass treatment, different pathways are still under investigation. A promising way is in the photodegradation, because it can lead to greener transformation processes with the use of solar light as a renewable resource. The aim of my work was the research of a photocatalyst for the hydrolysis of cellobiose under visible irradiation. Cellobiose was selected because it is a model molecule for biomass depolymerisation studies. Diffe

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37

Milliken, Damion Alexander. "Uranium doping of silver sheathed bismuth-strontium-calcium-copper-oxide superconducting tapes for increased critical current density through enhanced flux pinning." Access electronically, 2004. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20040810.154223/index.html.

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38

Dias, Filho José Marcelino da Silva 1988. "Análises térmica e microestrutural na solidificação de ligas monofásica e peritéticas do sistema Zn-Ag." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263133.

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Orientador: Amauri Garcia<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-23T08:57:42Z (GMT). No. of bitstreams: 1 DiasFilho_JoseMarcelinodaSilva_M.pdf: 6517871 bytes, checksum: ef7c786d7139cf30a13befba0cfaf24d (MD5) Previous issue date: 2013<br>Resumo: O resumo poderá ser visualizado no texto completo da tese digital<br>Abstract: The abstract is available with the full electronic document<br>Mestrado<br>Materiais e Processos de Fabricação<br>Mestre em Engenharia Mecânica

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39

Unsworth, Paul. "Spectroscopic studies of metal alloys and semiconductor interfaces." Thesis, University of Liverpool, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343647.

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40

Neto, José Luiz Bott. "Estudo comparativo da eletro-oxidação de glicerol, propano-1,2-diol e propanol em meio alcalino sobre Au/C e AgxAu1-x/C." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/75/75134/tde-04072014-091315/.

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No presente trabalho, foram sintetizadas nanopartículas mono e bimetálicas de ouro e prata ancoradas em carbono (Au/C, Ag/C e AgxAu1-xC) empregando-se o glicerol em meio alcalino como agente redutor. Os materiais produzidos foram caracterizados por Espectroscopia de Energia Dispersiva de Raios X (EDX), Difratometria de Raios X (DRX) e Microscopia Eletrônica de Transmissão (MET). As avaliações da atividade eletrocatalítica foram realizadas por Cronoamperometria e Voltametria Cíclica. No estudo do mecanismo da eletro-oxidação do glicerol, propano-1,2-diol e propanol empregou-se a técnica de Espe

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41

Nomier, Yousra Ahmed Reyad [Verfasser]. "In vitro and ex vivo studies of the biocompatibility of magnesium-silver alloys and their antimicrobial effects on bovine bacterial species / Yousra Ahmed Reyad Nomier." Hannover : Bibliothek der Tierärztlichen Hochschule Hannover, 2011. http://d-nb.info/1019135220/34.

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42

Cassidy, Kevin D. "Electrosynthesis of Hydrogen Peroxide in an Acidic Environment with RuO2 as a Water Oxidation Catalyst & Silver Nanoparticles in Zeolite Y: Surface Enhanced Raman Spectroscopic (SERS) Studies." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1292365863.

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43

Caraher, Sally Kate 1974. "Clustering and precipitation processes in age-hardened Al-Zn-Mg-(Ag, Cu) alloys." Monash University, School of Physics and Materials Engineering, 2002. http://arrow.monash.edu.au/hdl/1959.1/7803.

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44

Kent, Ronald Douglas. "Controlled Evaluation of Metal-Based Nanomaterial Transformations." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/74998.

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Metal-based nanoparticles (MNPs) are becoming increasingly common in commercial products. Release of these materials into the environment raises concerns about the potential risks they pose to aquatic life. Predicting these risks requires an understanding of MNPs' chemical transformations. In this study, arrays of immobilized MNPs fabricated by nanosphere lithography (NSL) were used to investigate environmental transformations of MNPs. Specifically, sulfidation of silver nanoparticles (Ag NPs) and dissolution of copper-based nanoparticles (Cu NPs) were investigated. Atomic force microscopy (AF

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45

Findik, Hamide. "Potassium Permanganate/ Carboxylic Acid/ Organic Solvent: A Powerful Reagent For C-c Bond Formation, Aryl Coupling Reactions And Enone Oxidation Ipso-nitration Of Arylboronic Acids With Silver Nitrite/ Tmscl." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610472/index.pdf.

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The first part of the thesis presents the KMnO4/ carboxylic acid/ organic solvent which is a powerful reagent for C-C bond formation, aryl coupling reactions and enone oxidation. The a&cent<br>-acetoxylation of enones and the a-acetoxylation of aromatic ketones were carried out with potassium permanganate and acetic acid, in which acetoxylation products were obtained in 74-96% yields. The same reaction was carried out with carboxylic acids other than acetic acid, which furnished corresponding acyloxy ketones with the same regioselectivity. For the first time, formyloxylation products were synt

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46

ISIDORO, ROBERTA A. "Desenvolvimento de eletrocatalisadores de PdM (M= Ni, Cu, Ag) para reação de redução de oxigênio em meio básico na ausência e presença de álcool." reponame:Repositório Institucional do IPEN, 2015. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26388.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2016-06-22T13:42:56Z No. of bitstreams: 0<br>Made available in DSpace on 2016-06-22T13:42:56Z (GMT). No. of bitstreams: 0<br>Tese (Doutorado em Tecnologia Nuclear)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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Petrucci, Oscar. "Ferritin-Based Photo-Oxidation of Biomass for Nanoparticle Synthesis, Bioremediation, and Hydrogen Evolution." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/4308.

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The cell is the basic unit of all living organisms. It is an amazing machine capable of self-replicating, growing, and synthesizing and shuttling thousands of compounds. To perform all of these activities the cell needs energy. The original source of energy for all living beings is the Sun. The energy of the sun is collected by the autotrophs (mostly plants) through photosynthesis and stored in the chemical bonds of carbohydrates and lipids through carboxylic acid intermediates; animals use these compounds to obtain the energy for their cells. Most of the energy extracted by the cell comes fro

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48

Heponiemi, A. (Anne). "Catalytic wet air oxidation of industrial wastewaters:oxidation of bisphenol A over cerium supported metal catalysts." Doctoral thesis, Oulun yliopisto, 2015. http://urn.fi/urn:isbn:9789526208992.

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Abstract The large amounts of industrial wastewaters, contaminated by hazardous and toxic compounds together with ever tightening legislation, have challenged traditional wastewater treatment methods. Therefore, the development of discharge limits under, cost-effective and ecological wastewater treatment has become an essential concern. Catalytic water phase technologies are interesting alternatives for traditional wastewater treatment. Among them catalytic wet air oxidation (CWAO) has been used successfully in the management of various industrial effluents. However, the development of an acti

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Gaudet, Jason. "Gas-Phase Epoxidation of Ethylene and Propylene." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/29341.

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Catalysts consisting of silver on Î±-Al2O3, Î±-SiC, and Î²-SiC supports were synthesized and tested for catalytic performance in the gas-phase direct oxidation of ethylene to ethylene oxide. For this study, which used no promoters, ethylene oxidation selectivity of SiC-supported catalysts ranged from 10 to 60% and conversion from 0-4.5%. Silicon carbide supported catalysts exhibited poor performance except for a surface-modified Î²-SiC-supported catalyst, which demonstrated conversion and selectivity similar to that of an Î±-Al2O3-supported catalyst. This Ag/Î²-SiC catalyst was further inve

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Kassam, Tahsin Ali. "The effects of Alumina purity, TICUSIL® braze preform thickness and post-grinding heat treatment on the microstructure, mechanical and nanomechanical properties of Alumina-to-Alumina brazed joints." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/15311.

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Alumina-to-alumina brazed joints were formed using 96.0 and 99.7 wt.% Al2O3 ceramics in as-ground and in ground and heat treated conditions using TICUSIL® (68.8Ag-26.7Cu-4.7Ti wt.%) braze preforms of thicknesses ranging from 50 to 250 μm. Brazing was conducted in a vacuum of 1 x 10-5 mbar at 850 °C for 10 minutes. Joint strengths were evaluated using four-point bend testing and were compared to the flexural strengths of standard test bars according to ASTM C1161-13. Post-grinding heat treatment, performed at 1550 °C for 1 hour, did not affect the average surface roughness or grain size of eith

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