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Dissertations / Theses on the topic 'Decomposition of metal trifluoroacetates'

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Published: 18 May 2024

Last updated: 31 July 2025

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1

Ben, Salem Roua. "Catalyseurs à base d'oxydes métalliques fluorés : synthèse, caractérisations et applications catalytiques." Electronic Thesis or Diss., Lyon 1, 2023. https://n2t.net/ark:/47881/m6c53kx4.

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Ces travaux de thèse portent sur la synthèse de nouveaux catalyseurs fluorés, utilisant d’acide trifluoroacétique (TFAH) comme précurseur de Fluor, leurs caractérisations physico-chimiques et l’étude de leurs propriétés acido-basiques en phases gazeuse et aqueuse. Une première méthode consiste en l’échange anionique entre des supports oxo/hydroxo de titane, de niobium ou de zirconium, de surfaces spécifiques élevées, et une solution de TFAH. La rétention du fluor, avant et après calcination, est plus importante au contact du support à base de zirconium. La présence de fluor inhibe la basicité

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2

Stillman, T. J. "A crystallographic investigation into the structure of the metal - trifluoroacetates." Thesis, Lancaster University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383545.

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3

Sykes, Martin Lewis. "Metal carbonyl decomposition and carbon decomposition in the A.G.R." Thesis, University of Newcastle Upon Tyne, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315635.

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4

Coetzee, Anita. "Thermal decomposition of mixed metal oxalates." Thesis, Rhodes University, 1993. http://hdl.handle.net/10962/d1005053.

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The mixed metal oxalates, FeCu(ox)₂.3H₂0, CoCu(ox)₂.3H₂0, and NiCu(ox)₂.3.5H₂0, [ox = C₂0₄] have been prepared by coprecipitation from solution. The thermal behaviour of these compounds in nitrogen and in oxygen has been examined using thermogravimetry (TG), thermomagnetometry (TM), differential scanning calorimetry (DSC) and evolved gas analysis (EGA), and results are compared with results obtained for Cuox and Mox.yH₂0. The thermal behaviour of the mixed oxalates, MCU(OX)₂.xH₂0, differed from that of the individual metal oxalates, Cuox, Coox.2H₂0, Niox.2H₂0 and Feox.2H₂0. All three mixed oxa

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5

Waechtler, Thomas, Yingzhong Shen, Alexander Jakob, et al. "Evaluation of Phosphite and Phosphane Stabilized Copper(I) Trifluoroacetates as Precursors for the Metal-Organic Chemical Vapor Deposition of Copper." Universitätsbibliothek Chemnitz, 2006. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200600315.

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Copper has become the material of choice for metallization of high-performance ultra-large scale integrated circuits. As the feature size is continuously decreasing, metal-organic chemical vapor deposition (MOCVD) appears promising for depositing the Cu seed layer required for electroplating, as well as for filling entire interconnect structures. In this work, four novel organophosphane and organophosphite Cu(I) trifluoroacetates were studied as precursors for Cu MOCVD. Details are reported on CVD results obtained with Tris(tri-n-butylphosphane)copper(I)trifluoroacetate, (<sup>n</s

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6

Bocelli, Ludovica. "Catalytic decomposition of formic acid using supported metal nanoparticles." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/11929/.

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Upgrade of hydrogen to valuable fuel is a central topic in modern research due to its high availability and low price. For the difficulties in hydrogen storage, different pathways are still under investigation. A promising way is in the liquid-phase chemical hydrogen storage materials, because they can lead to greener transformation processes with the on line development of hydrogen for fuel cells. The aim of my work was the optimization of catalysts for the decomposition of formic acid made by sol immobilisation method (a typical colloidal method). Formic acid was selected because of the foll

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7

Makepeace, Joshua William. "Light metal amides for hydrogen storage and ammonia decomposition." Thesis, University of Oxford, 2014. https://ora.ox.ac.uk/objects/uuid:baf23b20-eab8-4baa-98a8-e0084bd85e39.

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Hydrogen has long been touted as an alternative fuel which could form the basis of a sustainable energy system: the hydrogen economy. This thesis advances the application of light metal amide materials in the realisation of this transformative potential. One of the most vexing technical challenges to the widespread adoption of hydrogen in transportation applications is its low volumetric energy density, which makes the storage of a sufficient amount of hydrogen in a vehicle very difficult. In their conventional application, light metal amides (<b>M(NH<sub>2</sub>)<sub>x</sub></b>),where M is a

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8

Saunders, Andrew J. "Metal sulphur complexes and systematic investigation of their thermal decomposition." Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.432568.

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9

Tesfai, Teweldemedhim M. "Adsorption and decomposition of organophosphorus compounds on alumina supported metal oxides." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 1998. http://digitalcommons.auctr.edu/dissertations/1540.

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Diffuse reflectance infrared spectroscopy techniques have been employed to investigate the interaction and decomposition of DMMP alumina supported iron oxide catalysts differing in iron oxide loading. At room temperature, the low loading iron oxide catalysts have shown no significant activity toward the decomposition ofDMMP, and they behave similarly to alumina. For the low loading iron oxide catalysts, all the methyl stretching vibrations were observed and their relative intensities did not change as a function of exposure to DMMP. On the other hand, DMMP adsorbs dissociatively on the high lo

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10

Stell, Jonathan Kendrew. "An E.S.R. study of the decomposition of peroxides by metal ions." Thesis, University of York, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.276493.

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11

Zhang, Yanping. "Nitric oxide decomposition over metal ion-modified Cu-ZSM-5 catalysts." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11260.

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12

Zhao, Qi. "Characterization and Thermal Decomposition Behavior of Carbon Nanotubes and Nanocomposites." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1378113311.

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13

Serra, Maia Rui Filipe. "Relation between surface structural and chemical properties of platinum nanoparticles and their catalytic activity in the decomposition of hydrogen peroxide." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/85149.

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The disproportionation of H₂O₂ to H₂O and molecular O₂ catalyzed by platinum nanocatalysts is technologically very important in several energy conversion technologies, such as steam propellant thrust applications and hydrogen fuel cells. However, the mechanism of H₂O₂ decomposition on platinum has been unresolved for more than 100 years and the kinetics of this reaction were poorly understood. Our goal was to quantify the effect of reaction conditions and catalyst properties on the decomposition of H₂O₂ by platinum nanocatalysts and determine the mechanism and rate-limiting step of the reactio

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14

Upton, J. R. "The application of quantitative time-of-flight mass spectrometry to study certain tungston (VI) oxidehalide decomposition reactions." Thesis, University of Salford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376883.

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15

Griffiths, David P. "Trying to decrease the decomposition rates of peracids (and Hâ‚‚Oâ‚‚) by solution-phase metal ions." Thesis, University of York, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423842.

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16

Al-Sousi, Ghareeb N. "Studies on the thermal decomposition behaviour, kinetics and electrical conductivity of the non-isothermal decomposition of pyridine mono carboxylic acids and some of their transition metal complexes." Thesis, Aston University, 2000. http://publications.aston.ac.uk/9623/.

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The thesis is divided into four chapters. They are: introduction, experimental, results and discussion about the free ligands and results and discussion about the complexes. The First Chapter, the introductory chapter, is a general introduction to the study of solid state reactions. The Second Chapter is devoted to the materials and experimental methods that have been used for carrying out the experiments. The Third Chapter is concerned with the characterisations of free ligands (Picolinic acid, nicotinic acid, and isonicotinic acid) by using elemental analysis, IR spectra, X-ray diffraction,

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17

Bruno, Deborah Suzanne. "Synthesis and thermal decomposition of [CM(CO)CH₂S(Ph)CH₂CH=CH₂] BF₄, M=Fe, Ru." Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/27663.

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18

George, Lyci. "Structural Characterization of Metal Hydrides for Energy Applications." FIU Digital Commons, 2010. http://digitalcommons.fiu.edu/etd/233.

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Hydrogen can be an unlimited source of clean energy for future because of its very high energy density compared to the conventional fuels like gasoline. An efficient and safer way of storing hydrogen is in metals and alloys as hydrides. Light metal hydrides, alanates and borohydrides have very good hydrogen storage capacity, but high operation temperatures hinder their application. Improvement of thermodynamic properties of these hydrides is important for their commercial use as a source of energy. Application of pressure on materials can have influence on their properties favoring hydrogen st

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19

Mitchell, Michael S. "Oxidation of biological molecules with bicarbonate-activated hydrogen peroxide and the decomposition of hydrogen peroxide catalyzed by manganese(II) and bicarbonate." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0004948.

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20

Agarwal, Kuldeep. "Physics Based Hierarchical Decomposition of Processes for Design of Complex Engineered Systems." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1322152146.

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21

Wasmund, Eric Bain Coley Ken. "A study of powder making by the decomposition of nickel carbonyl in an aerosol tube reactor." *McMaster only, 2005.

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22

RACIOPPI, STEFANO. "CHEMICAL BONDING IN METAL-ORGANIC SYSTEMS: NATURE, STRUCTURES AND PROPERTIES." Doctoral thesis, Università degli Studi di Milano, 2019. http://hdl.handle.net/2434/606271.

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The main purpose of my thesis is the application of theoretical and experimental methods for the study of the nature of the chemical bond and its effect on structures and properties in organome-tallic systems, like Metal Carbonyl Clusters and Coordination Polymers (CPs) featuring, in some of the cases under study, intrinsic porosity (in the following, PCP for Porous Coordination Polymers or MOFs for Metal-Organic Frameworks). Concerning metal clusters, we worked on high nuclearity metal carbonyl clusters, and, particularly, on those featuring semi-interstitial atoms. The chemical bonding and t

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23

Nagy, Péter. "Formation and Decomposition of Platinum–Thallium Bond, Kinetics and Mechanism. Structural Characterization of Some Metal Cyanides in the Solid State." Doctoral thesis, KTH, Chemistry, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3803.

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<p>The kinetic and mechanistic features of a new series ofplatinum-thallium cyano compounds containing a direct andunsupported by ligands metal-metal bond have been studied insolution, using standard mixandmeasurespectrophotometric technique and stoppedflow method.These reactions are interpreted as oxidative addition of the cspecies to the square planar Pt(CN)<sub>4</sub><sup>2-</sup>complex. Each of these processes was found to befirst-order in Pt(CN)<sub>4</sub><sup>2-</sup>, the corresponding TI<sup>III</sup>complex and a cyanide ion donating species whichacts as a catalyst. Both di- and

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24

Buselli, Lorenzo. "Study of Co-based hydrotalcite-derived mixed metal oxides partially modified with silver as potential catalysts for N2O decomposition." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/11930/.

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Co-Al-Ox mixed metal oxides partially modified with Cu or Mg, as well as Ag were successfully prepared, characterized and evaluated as potential catalysts for the N2O decomposition. The materials were characterized by the following techniques: X-Ray Diffraction, Thermogravimetric Analysis (TGA), N2 Physisorption, Hydrogen Temperature-Programmed Reduction (H2-TPR), and X-ray photoelectron spectroscopy (XPS). Ag-modified HT-derived mixed oxides showed enhanced activity compared to the undoped materials, the optimum composition was found for (1 wt.% Ag)CHT-Co3Al. The catalyst characterization stu

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25

Truong, Khai-Nghi Verfasser], Ullrich [Akademischer Betreuer] [Englert, and Wolfgang [Akademischer Betreuer] Stahl. "Design of mixed-metal coordination networks : synthesis, structural characterization, and thermal decomposition / Khai-Nghi Truong ; Ullrich Englert, Wolfgang Stahl." Aachen : Universitätsbibliothek der RWTH Aachen, 2018. http://d-nb.info/1187346594/34.

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26

Truong, Khai-Nghi [Verfasser], Ullrich [Akademischer Betreuer] Englert, and Wolfgang [Akademischer Betreuer] Stahl. "Design of mixed-metal coordination networks : synthesis, structural characterization, and thermal decomposition / Khai-Nghi Truong ; Ullrich Englert, Wolfgang Stahl." Aachen : Universitätsbibliothek der RWTH Aachen, 2018. http://d-nb.info/1187346594/34.

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27

Obi-Johnson, Bettie Jeanne. "Mechanistic analysis of the thermally induced decomposition of certain metal beta-diketonate precursors for chemical vapor deposition of electronic materials." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/30743.

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28

Driscoll, Darren Matthew. "Spectroscopic Studies of Small Molecule Adsorption and Oxidation on TiO2-Supported Coinage Metals and Zr6-based Metal-Organic Frameworks." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/100685.

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Developing a fundamental understanding of the interactions between catalytic surfaces and adsorbed molecules is imperative to the rational design of new materials for catalytic, sorption and gas separation applications. Experiments that probed the chemistry at the gas-surface interface were employed through the utilization of in situ infrared spectroscopic measurements in high vacuum conditions to allow for detailed and systematic investigations into adsorption and reactive processes. Specifically, the mechanistic details of propene epoxidation on the surface of nanoparticulate Au supported on

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29

Allesson, Sara. "Sheet Metal Forming Simulations with Elastic Dies: Emphasis on Computational Cost." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-18236.

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The car industry produces many of their car parts by using sheet metal forming, where one of the most time-consuming phases is the development and manufacturing of new forming tools. As of today, when a new tool is to be evaluated in terms of usability, a forming simulation is conducted to predict possible failures before manufacturing. The assumption is then that the tools are rigid, and the only deformable part is the sheet metal itself. This is however not the case, since the tools also deform during the forming process. A previous research, which is the basis of this thesis, included a mod

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30

Bisaro, René. "Etude des proprietes et structure des couches minces de silicium deposees par decomposition thermique de silane." Paris 6, 1987. http://www.theses.fr/1987PA066267.

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La taille des grains, la texture, la morphologie de surface, la conductivite electrique et l'absorption optique sont etudies en fonction des parametres de depot. L'optimum des proprietes de transport des couches polycristallines est lie a un regime de cristallisation en phase solide. Etude du processus de cristallisation, effet d'impuretes dopantes. On met en evidence l'effet des liaisons disponibles et de leur etat de charge sur le mecanisme des cristallisation

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31

Allehyani, Esam. "Synthesis and Characterization of PEO-PS-PEO Triblock Copolymer Conjugated with Ni-NTA for Biosensors." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 2018. http://digitalcommons.auctr.edu/cauetds/157.

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Poly(ethylene oxide)-poly(styrene)-poly(ethylene oxide) triblock copolymer with di-hydroxyl terminated groups (HO-PEO-PS-PEO-OH) was conjugated with nitrilotriacetic acid (NTA) via esterification reaction using N,N'-Dicyclohexylcarbodiimide (DCC), 4-Dimethylaminopyridine (DMAP) and Dimethylformamide (DMF) as a solvent at 80 ○C. The poly(ethylene oxide)-poly(styrene)-poly(ethylene oxide) with NTA end groups (NTA-PEO-PS-PEO-NTA) was characterized and structure confirmed by 1H NMR, 13C NMR, and FT-IR spectroscopies. Thermogravimetric analysis (TGA) was carried out to investigate the thermal stabi

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32

Pope, Matthew. "The titanium(IV) oxide photocatalysed decomposition of some common pollutants in water and the influence of metal ions on the photocatalytic process." Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387774.

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33

Wang, Guanyu. "Interfacial Energy Transfer in Small Hydrocarbon Collisions with Organic Surfaces and the Decomposition of Chemical Warfare Agent Simulants within Metal-Organic Frameworks." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/100746.

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A molecular-level understanding of gas-surface energy exchange and reaction mechanisms will aid in the prediction of the environmental fate of pollutants and enable advances toward catalysts for the decomposition of toxic compounds. To this end, molecular beam scattering experiments performed in an ultra-high vacuum environment have provided key insights into the initial collision and outcome of critical interfacial processes on model systems. Results from these surface science experiments show that, upon gas-surface collisions, energy transfer depends, in subtle ways, on both the properties

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34

Zhang, Xiaoqiao [Verfasser], Klaus [Akademischer Betreuer] Köhler, Klaus [Gutachter] Köhler, and Richard W. [Gutachter] Fischer. "Decomposition of Nitrous Oxide by Supported Transition Metal Catalysts: Structure-Activity Relationships / Xiaoqiao Zhang ; Gutachter: Klaus Köhler, Richard W. Fischer ; Betreuer: Klaus Köhler." München : Universitätsbibliothek der TU München, 2019. http://d-nb.info/1192911652/34.

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35

Zhang, Yirui S. M. Massachusetts Institute of Technology. "Understanding the pathway and mechanism of electrolyte decomposition on metal oxide surfaces in Li-ion batteries by in situ Fourier Transform Infrared Spectroscopy." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122227.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2019<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 69-75).<br>Understanding (electro)chemical reactions at the electrode-electrolyte interface (EEI) is crucial to promote the cycle life of lithium-ion batteries. In situ studies of EEI can provide new insights into reaction intermediates and soluble species not accessible by ex situ characterization of electrode surfaces. In this study, we developed an in situ Fourier Transform infrared spectroscopy (FTIR) method t

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36

Gross, Timothy M. "[Beta]-barium borate thin film formation on silicon through metal organic decomposition of two novel precursors, barium dimesitylborinate and barium (18-crown-6) cyclotriboroxane /." Online version of thesis, 2004. http://hdl.handle.net/1850/11802.

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37

El, Hamdi Lahfid Majid. "On the use of energy decomposition analyses to unravel the origin of the relative stabilities of isomers." Doctoral thesis, Universitat de Girona, 2013. http://hdl.handle.net/10803/124220.

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Structural isomers are molecules that have the same number and type of atoms but arranged in different manner. The isomerization energy is the energy difference between two isomers, i.e. the energy cost corresponding to the transformation of one isomer into another. In this thesis, the PhD student has focused on isomers that can be built from the same fragments, but simply connecting them differently, with a new methodology called "turn-upside-down." Basically one starts with the same two fragments and they are connected in different way to build the two isomers. Later, the energies involved i

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38

Rico, Pérez Verónica. "Optimization of N2O decomposition RhOx/ceria catalysts and design of a high N2-selective deNOx system for diesel vehicles." Doctoral thesis, Universidad de Alicante, 2013. http://hdl.handle.net/10045/35739.

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39

Palan, Rohit Chandulal. "Pyroelectric Properties of Ferroelectric Lanthanum Bismuth Titanate Thin Films." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1000746504.

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40

Takriti, Salaheddin. "Echange isotopique dans les solides : iodate marque dans des periodates alcalins." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13085.

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Etude de l'echange isotopique initial et thermiquement active dans des periodates alcalins dopes par les iodates par precipitation et la decomposition des matrices. Presence d'un adjuvant lacunaire asssocie aux dopants

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41

Frenzel, Peter, Andrea Preuß, Jörn Bankwitz, et al. "Synthesis of Mg and Zn diolates and their use in metal oxide deposition." Royal Society of Chemistry, 2019. https://monarch.qucosa.de/id/qucosa%3A33722.

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The synthesis of complexes [M(OCHMeCH2NMeCH2)2] (5, M = Mg; 7, M = Zn) is described. Treatment of MeHNCH2CH2NMeH (1) with 2-methyloxirane (2) gave diol (HOCHMeCH2NMeCH2)2 (3), which upon reaction with equimolar amounts of MR2 (4, M = Mg, R = Bu; 6, M = Zn, R = Et) gave 5 and 7. The thermal behavior and vapor pressure of 5 and 7 were investigated to show whether they are suited as CVD (= chemical vapor deposition) and/or spin-coating precursors for MgO or ZnO layer formation. Thermogravimetric (TG) studies revealed that 5 and 7 decompose between 80–530 °C forming MgO and ZnO as evidenced by PXR

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42

Jost, Pierre. "Apport de technique informatiques a l'etude des complexes polynucleaires du nolybdene vi : equilibres de formation et cinetique de condensation en milieu nacl 0,1 m." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13112.

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La methode proposee consiste a combiner la methode de la surface potentiometrique de bye-lefebvre, une methode de regression non lineaire et une methode de simulation statistique. Etude des equilibres de formation des isopolyanions molybdiques. On propose un mecanisme de type sn2 pour les reactions de decondensation et d'hydrolyse des ions trimolybdiques et tetramolybdiques

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Zhao, Yanyan. "Synthesis and characterisation of metal (Fe, Ga, Y) doped alumina and gallium oxide nanostructures." Thesis, Queensland University of Technology, 2008. https://eprints.qut.edu.au/20529/1/Yanyan_Zhao_Thesis.pdf.

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It is well known that nanostructures possess unique electronic, optical, magnetic, ferroelectric and piezoelectric properties that are often superior to traditional bulk materials. In particular, one dimensional (1D) nanostructured inorganic materials including nanofibres, nanotubes and nanobelts have attracted considerable attention due to their distinctive geometries, novel physical and chemical properties, combined effects and their applications to numerous areas. Metal ion doping is a promising technique which can be utilized to control the properties of materials by intentionally introduc

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Zhao, Yanyan. "Synthesis and characterisation of metal (Fe, Ga, Y) doped alumina and gallium oxide nanostructures." Queensland University of Technology, 2008. http://eprints.qut.edu.au/20529/.

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It is well known that nanostructures possess unique electronic, optical, magnetic, ferroelectric and piezoelectric properties that are often superior to traditional bulk materials. In particular, one dimensional (1D) nanostructured inorganic materials including nanofibres, nanotubes and nanobelts have attracted considerable attention due to their distinctive geometries, novel physical and chemical properties, combined effects and their applications to numerous areas. Metal ion doping is a promising technique which can be utilized to control the properties of materials by intentionally introduc

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45

Yang, Jing. "Synthesis and characterisation of metal oxyhydroxide and oxide nanomaterials." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/45712/1/Jing_Yang_Thesis.pdf.

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In this work, a range of nanomaterials have been synthesised based on metal oxyhydroxides MO(OH), where M=Al, Co, Cr, etc. Through a self-assembly hydrothermal route, metal oxyhydroxide nanomaterials with various morphologies were successfully synthesised: one dimensional boehmite (AlO(OH)) nanofibres, zero dimensional indium hydroxide (In(OH)3) nanocubes and chromium oxyhydroxide (CrO(OH)) nanoparticles, as well as two dimensional cobalt hydroxide and oxyhydroxide (Co(OH)2 & CoO(OH)) nanodiscs. In order to control the synthetic nanomaterial morphology and growth, several factors were investig

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46

Thevenin, Philippe. "Catalytic combustion of methane." Doctoral thesis, KTH, Chemical Engineering and Technology, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3402.

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<p>Catalytic combustion is an environmentally benign technologywhich has recently reached the stage of commercialization.Palladium is the catalyst of choice when considering gasturbines fuelled with natural gas because of its superioractivity for methane oxidation. Several fundamental issues arestill open and their understanding would result in animprovement of the technology. Hence, the work presented inthis thesis aims at the identification of some of theparameters which govern the combustion activity ofpalladium-based catalysts.</p><p>The first part of this work gives a background to cataly

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47

Souza, Felipe Thiago Caldeira de. "Catalisadores a base de Ni e Fe ancorados em alumina e CeCo2 para decomposição do metano: produção de hidrogênio e nanotubos de carbono." Universidade Federal de Alagoas, 2015. http://www.repositorio.ufal.br/handle/riufal/1897.

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The catalytic decomposition of the methane (DCM) can be recognized as a promising reaction for the production of COx-free hydrogen. At the same time the production of hydrogen formation occurs structured carbonaceous material, carbon nanotubes (NTC), which have intrinsic characteristics, such as flexibility, high thermal and electrical conductivity, high chemical and mechanical stability. This study aimed to the synthesis of catalytic materials for DCM reaction involving two distinct synthesis routes, metal-chitosan complexation preparation support (Al2O3) followed by anchoring (CeO2) and subs

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El, Bakouri El Farri Ouissam. "Electronic structure, chemical bonding, and electronic delocalization of organic and inorganic systems with three-dimensional or excited state aromaticity." Doctoral thesis, Universitat de Girona, 2017. http://hdl.handle.net/10803/565444.

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Aromaticity is a key concept in chemistry, used by chemists to explain the structure, stability, and reactivity of many compounds. Aromatic compounds are present in industrial processes as well as in living systems. Initially, the realm of aromatic molecules was limited to cyclic benzenoid systems. Over the years, this concept has been expanded to heterosystems, metal clusters, fullerenes, and more exotic molecules. In this thesis, the analysis of electronic structure, chemical bonding, and electronic delocalization of organic and inorganic systems that possess three-dimensional or excited sta

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Erbe, Manuela, Jens Hänisch, Thomas Freudenberg та ін. "Improved REBa₂Cu₃O₇₋ₓ (RE ═ Y, Gd) structure and superconducting properties by addition of acetylacetone in TFA-MOD precursor solutions". Royal Society of Chemistry, 2014. https://tud.qucosa.de/id/qucosa%3A36162.

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For developing commercially utilized high-performance high-temperature superconductors, the fabrication of biaxially textured (RE)Ba₂Cu₃O₇₋ₓ (REBCO, RE ═ Y, Gd) coated conductors via metal–organic decomposition of trifluoroacetate precursors (TFA-MOD) has become an interesting strategy for industrial scale-up due to low costs and simple operation. However, the hygroscopic nature of commonly used precursor solutions makes them very sensitive to water pollution through air humidity. This can lead to a degradation of the final microstructure, which in return deteriorates critical current densitie

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Ahmad, Shah Masood. "Filling the Structure-Reactivity Gap: in silico approaches to rationalize the design of molecular catalysts." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3422346.

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The design of molecular catalysts is an ambitious task implying the fundamental issue of relating the molecular structure to the reactivity, i.e., to the catalytic activity. The rationalization of the experimental data is often not straightforward and mechanistic schemes are not transferrable when the conditions of the process are changed or the catalyst is modified even slightly. Computer-aided investigations proved to be a more and more valid support in the last decade, but in most of the cases the aim is limited to investigate in detail the catalytic mechanism of a specific reaction and no

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