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Дисертації з теми "Catalysis"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 25 липня 2025

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1

Liu, Hongying. "Syntheses, structures, and catalysis of polynuclear metal complexes." Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/30561.

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2

Cunje, Alwin. "Noble gases and catalysis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0012/NQ59125.pdf.

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3

Clarke, Richard John. "Mesopore immobilised bis(oxazoline) catalysts for enantioselective catalysis." Thesis, University of Birmingham, 2003. http://etheses.bham.ac.uk//id/eprint/3578/.

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Анотація:

Mesoporous silica materials have the potential to replace many conventional silicas for uses such as supports for heterogeneous catalysis and absorbents. The large pore size and high surface area make them ideal for supporting bulky organometallic catalysts for enantioselective reactions. We have immobilised chiral bis(oxazoline) metal complexes onto the surfaces of some of these versatile supports (MCM-41 and MCM-48) via different tethering strategies. The resulting heterogeneous catalysts were shown to be highly active in the enantioselective cyclopropanation of styrene with ethyl diazoaceta

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4

Rosenthal, Daniel Jay. "Estimating the acid site density of silica-alumina by infrared spectroscopy using a selective reactant poison." Thesis, Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/10222.

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5

Richardson, John Michael. "Distinguishing between surface and solution catalysis for palladium catalyzed C-C coupling reactions: use of selective poisons." Diss., Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/22704.

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This work focuses on understanding the heterogeneous/homogeneous nature of the catalytic species for a variety of immobilized metal precatalysts used for C-C coupling reactions. These precatalysts include: (i) tethered organometallic palladium pincer complexes, (ii) an encapsulated small molecule palladium complex in a polymer matrix, (iii) mercapto-modified mesoporous silica metalated with palladium acetate, and (iv) amino-functionalized mesoporous silicas metalated with Ni(II). As part of this investigation, the use of metal scavengers as selective poisons of homogeneous catalysis is intr

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6

Reddy, P. K. "Exploration of catalysts and catalysis under near working conditions." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2018. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/4577.

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7

Beckler, Robert Kendall. "Polynuclear metal complexes as model mixed oxide catalysts." Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/11897.

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8

Damian, Karen Serena. "Pd catalysed synthesis of phosphines for homogeneous catalysis." Thesis, St Andrews, 2009. http://hdl.handle.net/10023/907.

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9

Jenkins, Patrick L. "Electrochemical and catalytic investigation of catalysis by gold." Thesis, Cardiff University, 2005. http://orca.cf.ac.uk/56012/.

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The performance of gold/graphite as an oxidation catalyst has been investigated in an electrochemical cell (electrooxidation at ambient temperature and pressure) and in a high pressure reactor (conventional catalytic oxidation typically at 3 bar and 333 K). A range of gold/graphite catalysts having various metal loadings were prepared and characterised by cyclic voltammetry (CV), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). The technique of lead underpotential deposition (Pdupd) was used to reveal the presence of {111}, {100}, and {110} facets in the surf

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10

Xu, Jiahui. "Catalytic properties of nano ceria in heterogeneous catalysis." Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:02e68ff9-ce28-475a-bd08-6b60bcda64e7.

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There have been many applications of cerium oxide in oxidation catalysis but the understanding of its role in catalysis is rather limited. This research is concerned with the use of nano-size cerium oxide in methane steam reforming reaction. It is found that addition of cerium oxide to the commercial supported Ni catalysts can dramatically reduce the undesirable carbon deposition (through surface oxidation), which is thermodynamically favorable under low steam conditions. In order to understanding the fundamental role of oxidation activity of the cerium oxide, different sizes of nano-crystalli

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11

Neate, Peter Gregory Nigel. "Pathways to sustainable catalysis : from novel catalysts to mechanistic understanding." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/25441.

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Анотація:

Catalysis allows for the controlled formation of new bonds, whilst reducing both time and energy expenditure in the process. Catalysis has traditionally been the realm of precious metals, which have been used to carry out a bewildering array of reactions. However, there is an ever-increasing drive for the development of catalytic methodology employing sustainable and environmentally benign catalysts. Two such candidates are organocatalysis, omitting the need for metals where possible, or the use of iron catalysis. Two key areas to the advancement of the of field catalysis are the identificatio

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12

Guo, Chris. "Alkane Oxidation Catalysis by Homogeneous and Heterogeneous Catalyst." Thesis, The University of Sydney, 2005. http://hdl.handle.net/2123/622.

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Abstract Cobalt-based complexes are widely used in industry and organic synthesis as catalysts for the oxidation of hydrocarbons. The Co/Mn/Br (known as "CAB system") catalyst system is effective for the oxidation of toluene. The Co/Mn/Br/Zr catalyst system is powerful for the oxidation of p-xylene, but not for the oxidation of toluene. [Co3O(OAc)5(OH)(py)3][PF6] (Co 3+ trimer 5) is more effective than [Co3O(OAc)6(py)3][PF6] (Co 3+ trimer 6) as a catalyst in the CAB catalyst system. Higher temperatures favour the oxidation of toluene. Zr 4+ does not enhance the oxidation of toluene. Zr

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13

Guo, Chris. "Alkane Oxidation Catalysis by Homogeneous and Heterogeneous Catalyst." University of Sydney. Chemistry, 2005. http://hdl.handle.net/2123/622.

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Анотація:

Abstract Cobalt-based complexes are widely used in industry and organic synthesis as catalysts for the oxidation of hydrocarbons. The Co/Mn/Br (known as "CAB system") catalyst system is effective for the oxidation of toluene. The Co/Mn/Br/Zr catalyst system is powerful for the oxidation of p-xylene, but not for the oxidation of toluene. [Co3O(OAc)5(OH)(py)3][PF6] (Co 3+ trimer 5) is more effective than [Co3O(OAc)6(py)3][PF6] (Co 3+ trimer 6) as a catalyst in the CAB catalyst system. Higher temperatures favour the oxidation of toluene. Zr 4+ does not enhance the oxidation of toluene. Zr

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14

Sonqishe, Thantaswa Millecent. "Treatment of brines using commercial zeolites and zeolites synthesized from fly ash derivative." Thesis, University of the Western Cape, 2008. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_6127_1297842299.

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<p>The objectives of this project was to ameroliate two waste materials, namely Acid Mine Drainage and Fly Ash and recover the solid residues for conversion into an adsorbent to treat brine. The solid residues were then converted into zeolite P through low temperature hydrothermal treatment. The adsorption capacity of the solid residues, zeolite P derived from the solid residues was compared to the commercial zeolite Y and fresh Arnot fly ash. The quality of the resulting water was assessed using different analytical methods before the reaction with adsorbents and after the reaction and a comp

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15

Venable, Margaret Hamm. "Syntheses, structures and support interactions of potential metal oxide catalyst precursors." Thesis, Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/26940.

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16

Linganiso, Linda Zikhona. "Adsorption studies on supported gold catalysts using temperature programmed desorption (TPD)." Thesis, Wits University, 2007. http://hdl.handle.net/10539/20167.

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17

Boich, Kenneth Paul. "Catalysis." The Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1328726768.

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18

Nees, Mary Barton. "Catalysis." Digital Commons @ East Tennessee State University, 2007. https://dc.etsu.edu/etd/2047.

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Анотація:

The artist discusses the process of discovery that led to her Master of Fine Arts exhibition at Slocumb Galleries, East Tennessee State University, from March 19 to 23, 2007. Investigations in printmaking, mixed media, and symbol are highlighted. The work for the thesis show consists of nineteen, 30" hand pulled works on paper. All works are oriented vertically and floated in the frame. Of this collection, thirteen are monotypes, four are collographs, and one is a collage. Insertions include intaglio, brayer marking, encaustic wax, paper, oil paint, pen, and sumi ink. Topics included are the

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19

Beach, Nicholas James. "Metathesis Catalysts in Tandem Catalysis: Methods and Mechanisms for Transformation." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/22731.

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Анотація:

The ever-worsening environmental crisis has stimulated development of less wasteful “green” technologies. To this end, tandem catalysis enables multiple catalytic cycles to be performed within a single reaction vessel, thereby eliminating intermediate processing steps and reducing solvent waste. Assisted tandem catalysis employs suitable chemical triggers to transform the initial catalyst into new species, thereby providing a mechanism for “switching on” secondary catalytic activity. This thesis demonstrates the importance of highly productive secondary catalysts through a comparative hydrogen

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20

Smallwood, Keith. "Catalysis and photocatalysis by platinized titanium dioxide and other catalysts." Thesis, University of Nottingham, 1993. http://eprints.nottingham.ac.uk/12591/.

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The gas-phase, thermal hydrogenations of propene and cyclopropane over various titania-supported metal catalysts have been investigated. Catalysts were prepared either by a photodeposition or a thermal reduction method. Absolute initial hydrogenation rates were calculated from total gas pressure vs time measurements. The activities of all catalysts were found to be very dependent upon catalyst state, as modified by reductive or oxidative pretreatments. These results are discussed in terms of reversible strong metal-support interactions, initiated via hydrogen spillover. For 0.5 %mass Pt on Ti0

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21

Carter, Christabel Anne. "Asymmetric phase transfer catalysis : towards catalysts with a chiral anion." Thesis, University of Leeds, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399654.

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22

Monti, Chiara. "Development of new catalysts for asymmetric catalysis via combinatorial chemistry." Thesis, University of Sheffield, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.398589.

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23

Konrad, Tina Maria. "Chiral phanephos derived catalysts and their application in asymmetric catalysis." Thesis, University of St Andrews, 2013. http://hdl.handle.net/10023/4499.

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Анотація:

The research presented in this thesis is a project funded by the EU-network of the Marie Curie project NANO-HOST in collaboration with partner institutes. The aims of this network are to develop innovative methods for the preparation, recovery and reuse of single-site, nanostructured catalytic materials, and further on apply them in combination with specifically engineered reactors for a sustainable production process for making high value fine chemicals. One part of this project was to prepare chiral diphosphine ligands and their complexes for currently challenging reactions, such as asymmetr

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24

Paterson, A. James. "Exploitation of synergy in oxidation catalysis with bimetallic aluminophosphate catalysts." Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/192867/.

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A series of novel bimetallic aluminophosphate catalysts were prepared with the simultaneous isomorphous substitution of cobalt (III) and manganese (III) for aluminium (III) and titanium (IV) replacing phosphorus (V). By substituting simultaneously for both Al (III) and P (V) in the ordered microporous aluminophosphate AlPO-5, the potential for catalytic application as either a solidacid or redox catalyst is produced. The bimetallic hydrothermal synthesis produced a phase pure and highly crystalline microporous catalyst which displayed properties not seen in monometallic AlPO-5 materials. These

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25

Barakat, Khaldoon A. Cundari Thomas R. "Computational studies of selected ruthenium catalysis reactions." [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-5203.

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26

Iniesta, Beteta Ester. "Supramolecular Catalytic Systems: Synthesis, Characterization and Application in Catalysis." Doctoral thesis, Universitat Rovira i Virgili, 2021. http://hdl.handle.net/10803/671551.

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Анотація:

Aquesta tesi doctoral abasta el disseny i el desenvolupament de catalitzadors supramoleculars derivats de metalls de transició per a la seva aplicació com a catalitzadors en transformacions d'interès. La primera part d'aquesta tesi doctoral està centrada en el desenvolupament de catalitzadors de coure(I) regulats supramolecularment i la seva aplicació en reaccions d'inserció d'espècies carbèniques metàl·liques a enllaços O–H, generant derivats α-alquil/aril-α-alcoxi/ariloxi. S’abordà el disseny, preparació, caracterització i aplicació dels catalitzadors de coure(I) derivats de lligands bisoxa

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27

Fan, Yinan. "Rational synthesis of plasmonic/catalytic bimetallic nanocrystals for catalysis." Thesis, Sorbonne université, 2022. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2022SORUS189.pdf.

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Анотація:

Parmi les différents nanocatalyseurs, ceux constitués de nanoparticules de métaux nobles méritent une attention particulière en raison de leurs propriétés électroniques, chimiques et même optiques (dans le cas de transformations renforcées par les plasmons). Le platine ou le palladium sont bien connus pour leurs remarquables propriétés catalytiques, mais ils sont chers et leurs ressources sont limitées. En outre, les nanocatalyseurs monométallique ne peuvent conduire qu'à une gamme limitée de réactions chimiques. Ainsi, notre stratégie a été de développer des nanocatalyseurs bimétalliques comp

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28

Meyer, Simon [Verfasser]. "Carbide Materials as Catalysts and Catalyst Supports for Applications in Water Electrolysis and in Heterogeneous Catalysis / Simon Meyer." München : Verlag Dr. Hut, 2014. http://d-nb.info/1058284967/34.

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29

Ashraf, Muhammed Arfan. "Biomimetic ligands for transition metals." Thesis, King's College London (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391261.

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30

Posada, Pérez Sergio. "Heterogeneous catalysis of green chemistry reactions on molybdenum carbide based catalysts." Doctoral thesis, Universitat de Barcelona, 2018. http://hdl.handle.net/10803/552405.

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Анотація:

Our society has a problem with the use of fossil fuels, due to the vast and exceeding emissions derived from human activities. Two ways could be consider to mitigate these harmful effects. On the one hand, the capture, activation, and conversion of these hazardous gases towards valuable compounds, and on the other hand, the substitution of fossil fuels for renewable energies. This thesis encompasses the study of two different green chemistry reactions to convert the most abundant greenhouse gas in Earth's atmosphere and the production of a new environmental friendly fuel, the hydrogen. In the

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31

Fjellander, Ester. "Self-adaptable catalysts : Importance of flexibility and applications in asymmetric catalysis." Doctoral thesis, KTH, Organisk kemi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-12852.

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The topic of this thesis is the design and synthesis of biaryl-based self adaptableligands for asymmetric metal catalysis. The results discussed in papers I-III are covered, together with some unpublished results concerning substrate-adaptable catalysts. A general survey of self-adaptable catalysts is presented first. The second chapter of this thesis starts with a survey of inversion barriers in biphenyl-based ligands and catalysts. Thereafter, the determination of barriers to conformational adaptation in dibenzoazepines and dibenzophosphepines is described. Palladium complexes with a diphosp

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32

Ou, Xiaoxia. "Developing hierarchically structured catalysts on cellular foams for continuous flow catalysis." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/developing-hierarchically-structured-catalysts-on-cellular-foams-for-continuous-flow-catalysis(e3fb780b-5212-4428-894d-288d4b819c6c).html.

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Анотація:

The development of modern chemical and environmental industry requires novel reactor concepts to enable the transfer of catalysts developed in laboratories into the industrial context. The applications of structured reactors/catalysts such as cellular foams are one of the most promising technologies that can facilitate this crucial step. Open-cell foams with stochastically interconnected cells and high porosities (>60%) can promote the low pressure drop during operation and improve the transport phenomena, overtaking the conventional fixed beds for continuous flow catalysis. In this PhD projec

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33

Durgun, Gülay Artok Levent. "Short-time suzuki reactions of arly halides catalyzed by palladium-loaded NaY zeolite under aerobic conditions/." [s.l.]: [s.n.], 2006. http://library.iyte.edu.tr/tezler/master/kimya/T000528.pdf.

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Thesis (Master)--İzmir Institute of Technology, İzmir, 2006.<br>Keywords:Suzuki reactions, palladium, NaYzeolite, heterogeneous catalyst, C-C coupling. Includes bibliographical references (leaves. 71-81).

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34

Lev, Daniel Abraham. "Group 8 and 9 half sandwich complexes of N-heterocyclic phosphines : synthesis, reactivity, and catalysis /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2004. http://wwwlib.umi.com/cr/ucsd/fullcit?p3158465.

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35

Paliga, James Francis. "Developing Earth-abundant metal-catalysts for hydrofunctionalisation." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31115.

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Анотація:

The iron-catalysed hydromagnesiation of styrene derivatives has been developed further from previous publications, expanding the electrophile scope to enable the regioselective formation of new carbon-carbon and carbon-heteroatom bonds (Scheme A1). A commercially available pre-catalyst and ligand were used to give an operationally simple procedure that did not require prior synthesis of a catalyst. This work also investigated the hydromagnesiation of dienes, using a screen of ligands commonly used in transition metal catalysis. An investigation into the magnesium-catalysed hydroboration of ole

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36

Peneau, Virginie. "Activation of hydrocarbons and their catalytic oxidation by heterogeneous catalysis." Thesis, Cardiff University, 2014. http://orca.cf.ac.uk/74614/.

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The targets of this thesis were the selective oxidation of hydrocarbons under mild conditions, using cheap and environmentally friendly oxidants and initiators. Three projects are treated; the oxidation of an alkane using O2 and a co-oxidant, the oxidation of toluene using TBHP (tert-butyl hydroperoxide) and finally the oxidation of propane using hydrogen peroxide. C-H bond activation, O2 activation and high conversion with high selectivity were essential points to investigate. In the first project, alkane oxidation was studied in presence of a co-oxidant. The co-oxidant has for purpose to ini

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37

Barnett, A. E. "Automotive catalysis." Thesis, Queen's University Belfast, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419491.

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38

Giacinto, Pietro <1980&gt. "Computational Investigation of Catalyzed Organic Reactions: Metal- and Organo-Catalysis, Bio-Catalysis and Carbo-Catalysis." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7558/1/Pietro_Giacinto_PhD_Thesis.pdf.

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In this thesis the results of a Computational Organic Chemistry Ph.D. work course ranging from organometallic to metal-free and enzymatic catalysis is discussed. Various energetic and mechanistic aspects of organic reactions in catalysis are the key-issues which are addressed. A multidisciplinary approach allowed the development of several research projects in collaboration with experimental groups and combined experimental-theoretical works were carried out. Notes and comments concerning the theoretical models used and the experimental work carried out by the research groups who cooperated wi

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39

Giacinto, Pietro <1980&gt. "Computational Investigation of Catalyzed Organic Reactions: Metal- and Organo-Catalysis, Bio-Catalysis and Carbo-Catalysis." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7558/.

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Анотація:

In this thesis the results of a Computational Organic Chemistry Ph.D. work course ranging from organometallic to metal-free and enzymatic catalysis is discussed. Various energetic and mechanistic aspects of organic reactions in catalysis are the key-issues which are addressed. A multidisciplinary approach allowed the development of several research projects in collaboration with experimental groups and combined experimental-theoretical works were carried out. Notes and comments concerning the theoretical models used and the experimental work carried out by the research groups who cooperated wi

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40

Yang, Fangfang. "Targeted supported laccase based hybrid catalyst for continuous flow catalysis." Electronic Thesis or Diss., Ecole centrale de Marseille, 2021. http://www.theses.fr/2021ECDM0009.

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Анотація:

Les catalyseurs hétérogènes sont aujourd’hui'hui largement développés afin d'obtenir une meilleure stabilité, une meilleure réutilisation ainsi qu'une meilleure localisation. Dans cette optique, nous avons d'abord préparé des catalyseurs hétérogènes à base d'enzymes par l'immobilisation d’une laccase d'origine fongique contenant seulement deux lysines de surface spatialement proches (K40, K71) ainsi que deux de ses variants contenant une lysine unique -une située à proximité du site d'oxydation du substrat (K157) et une à l'opposé de ce site d'oxydation (K71)- dans des mousses de silice de typ

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41

Barakat, Khaldoon A. "Computational Studies of Selected Ruthenium Catalysis Reactions." Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc5203/.

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Анотація:

Computational techniques were employed to investigate pathways that would improve the properties and characteristics of transition metal (i.e., ruthenium) catalysts, and to explore their mechanisms. The studied catalytic pathways are particularly relevant to catalytic hydroarylation of olefins. These processes involved the +2 to +3 oxidation of ruthenium and its effect on ruthenium-carbon bond strengths, carbon-hydrogen bond activation by 1,2-addition/reductive elimination pathways appropriate to catalytic hydrogen/deuterium exchange, and the possible intermediacy of highly coordinatively unsa

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42

Trant, Aoife Geraldine. "Structural and catalytic studies of novel Au/Ni enantioselective catalysts." Thesis, St Andrews, 2008. http://hdl.handle.net/10023/854.

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43

Chen, Gang. "Synthesis of fluorinated BINOL ligands and asymmetric catalysis with its derived catalysts." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ58758.pdf.

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44

Yamamoto, Takashi. "Studies on the Catalysis by New Solid Acid Catalysts and the Characterization." Kyoto University, 1999. http://hdl.handle.net/2433/77922.

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45

Arthur, Richard John. "Catalytic dechlorination of chloroalkenes by multimetallic cobaloximes : synthesis, chemistry and catalysis." Thesis, Cardiff University, 2010. http://orca.cf.ac.uk/55003/.

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The work presented in this thesis is primarily concerned with the synthesis and applications of cobaloximes towards reductive dechlorination of organohalides, such as perchlorocthylene. The toxicity and relevance of these organohalides is discussed in chapter one, which also describes the current industrial methods for their removal from the environment. An insight into the mechanism of dechlorination of perchloroethylene has been offered in chapter three, which describes the mechanism of dechlorination of PCE. This reaction proceeds via electron transfer from the catalytic cobaloxime to the P

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46

Rajurkar, K. B. "Studies in catalysis and reaction engineering aspects of multiphase catalytic reactions." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2008. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2704.

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47

Harms, Stefan Mathias. "The oligomerisation of propene over nickel oxide silica alumina." Master's thesis, University of Cape Town, 1987. http://hdl.handle.net/11427/22157.

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Bibliography: pages 129-132.<br>A synthesis techniQue was developed for the preparation of a nickel oxide sil ica alumina catalyst. The propene oligomerisation activity and the selectivity of the catalysts prepared by homogeneous decomposition deposition (HDD) were investigated and compared with nickel oxide silica alumina catalysts prepared by the techniQues of impregnation (IMP) and co-precipitation (SG). Amongst others. the effect of the nickel content. reacti6n temperature and pressure, and water content of the feed, on the activity and selectivity. were investigated. Also investigated wer

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48

Werner, Emilie. "Catalysis at the origin of life and catalysis today, a 3.8-billion-year jump." Electronic Thesis or Diss., Strasbourg, 2024. https://publication-theses.unistra.fr/public/theses_doctorat/2024/Werner_Emilie_2024_ED222.pdf.

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La catalyse, permettant une réactivité sélective et accrue, est exploitée aussi bien en chimie de synthèse qu’en biologie. Cette thèse l’abordera à deux temporalités différentes. Dans un premier temps, les processus chimiques aux origines de la vie seront étudiés au travers de deux types de catalyse non enzymatique : la catalyse par les métaux rares et la cocatalyse métal/coenzyme. Cette dernière serait un produit de l’évolution pour s’affranchir d’environnements rares et permettre à la chimie prébiotique de se propager vers des milieux communs. Dans un deuxième temps, la catalyse métallique m

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49

Large, Benjamin. "Activation sélective de naphtalènes et synthèse d'architectures polycycliques étendues." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLV070/document.

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Comme le naphtalène a récemment émergé comme un socle fondamental en chimie médicinale, le développement de méthodologies menant à des plateformes fonctionnalisées basées sur du naphtalène est devenu un centre d’intérêt majeur de la communauté scientifique. En effet, des conditions expérimentales optimisées sur le benzène ou d’autre noyaux aromatiques ne peuvent pas toujours être transposées au naphtalène. Ces dernières peuvent parfois conduire à des résultats différents, possiblement dû à l’aromaticité plus faible de ce bicycle aromatique.Dans ce contexte, cette thèse s’articule autour du nap

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50

Sengupta, Sujata. "1,2,3-(NH)-triazoles its metal-free synthesis and application as ligands in transition metal catalysis /." Morgantown, W. Va. : [West Virginia University Libraries], 2010. http://hdl.handle.net/10450/10984.

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Thesis (Ph. D.)--West Virginia University, 2010.<br>Title from document title page. Document formatted into pages; contains xii, 328 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 81-91).

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