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Dissertations / Theses on the topic 'Polymer-supported catalyst'

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1

Shiels, Rebecca Anne. "Synthesis, characterization, and evaluation of silica and polymer supported catalysts for the production of fine chemicals." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/29629.

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Thesis (Ph. D.)--Chemical Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Dr. Christopher Jones; Committee Member: Dr. Dennis Hess; Committee Member: Dr. Hang Lu; Committee Member: Dr. Marcus Weck; Committee Member: Dr. Pradeep Agrawal. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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2

Gill, Christopher Stephen. "Novel hybrid organic/inorganic single-sited catalysts and supports for fine chemical and pharmaceutical intermediate synthesis." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28218.

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Thesis (M. S.)--Chemical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Jones, Christopher; Committee Member: Agrawal, Pradeep; Committee Member: Teja, Amyn; Committee Member: Weck, Marcus; Committee Member: Zhang, John.
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3

Sterchele, Stefano. "Polymer Supported Heterogenous Catalysts for Direct Synthesis of Hydrogen Peroxide in Absence of Selectivity Enhancers." Doctoral thesis, Università degli studi di Padova, 2013. http://hdl.handle.net/11577/3423426.

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The research program developed during the Ph.D. School is focused on the study of metal catalysts supported on cross-linked functional polymers (CFPs) for the direct synthesis of hydrogen peroxide. In the last twenty years this compound has become a commodity with a constant increasing demand because of its strong oxidant properties and the formation of water as the reduction byproduct. In particular, H2O2 is widely employed as environmentally-friendly bleaching and cleaning agent. The best alternative to the current process, in particular for the small-scale production, is certainly the sy
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4

Chandanshive, Jay Zumbar <1983&gt. "Regiocontrolled Synthesis of Pyrazole Derivatives Through 1,3-Dipolar Cycloaddition Reaction And Synthesis of Helicene-Thiourea based and Polymer Supported Soos's Catalyst for Asymmetric Synthesis." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5826/1/Chandanshive_JAY_ZUMBAR_Thesis.pdf.

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In first part we have developed a simple regiocontrolled protocol of 1,3-DC to get ring fused pyrazole derivatives. These pyrazole derivatives were synthesized using 1,3-DC between nitrile imine and various dipolarophiles such as alkynes, cyclic α,β-ketones, lactones, thiocatones and lactums. The reactions were found to be highly regiospecific. In second part we have discussed about helicene, its properties, synthesis and applications as asymmetric catalyst.Due to inherent chirality, herein we have made an attempt to synthesize the helicene-thiourea based catalyst for asymmetric catalysi
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5

Chandanshive, Jay Zumbar <1983&gt. "Regiocontrolled Synthesis of Pyrazole Derivatives Through 1,3-Dipolar Cycloaddition Reaction And Synthesis of Helicene-Thiourea based and Polymer Supported Soos's Catalyst for Asymmetric Synthesis." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5826/.

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In first part we have developed a simple regiocontrolled protocol of 1,3-DC to get ring fused pyrazole derivatives. These pyrazole derivatives were synthesized using 1,3-DC between nitrile imine and various dipolarophiles such as alkynes, cyclic α,β-ketones, lactones, thiocatones and lactums. The reactions were found to be highly regiospecific. In second part we have discussed about helicene, its properties, synthesis and applications as asymmetric catalyst.Due to inherent chirality, herein we have made an attempt to synthesize the helicene-thiourea based catalyst for asymmetric catalysi
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6

Cruz, Marcia Gabriely Alves da. "SÃntese e anÃlise de catalisadores de ferro suportados em carbono ativado para sÃntese de Fischer-Tropsch." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=11666.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>Este trabalho teve como objetivo sintetizar catalisadores metÃlicos de ferro suportados em carbono ativado a base de polÃmeros para sÃntese de Fischer-Tropsch. A preparaÃÃo dos catalisadores foi realizada pelo mÃtodo de impregnaÃÃo a umidade incipiente, utilizando soluÃÃo aquosa de nitrato de ferro nonahidratado para obtenÃÃo de amostras com, aproximadamente, 55% de ferro. Duas amostras foram preparadas (FeCP1 e FeCP2) e caracterizadas por fluorescÃncia de raios-X por energia dispersiva (EDXRF), difraÃÃo de raios-X (DRX), medidas d
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7

Alza, Barrios Esther. "Approaches to asymmetric catalysis with polymer-supported pyrrolidines." Doctoral thesis, Universitat Rovira i Virgili, 2011. http://hdl.handle.net/10803/37362.

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El presente proyecto de investigación se centra en la inmovilización de sistemas catalíticos derivados de pirrolidinas sobre polímeros entrecruzados de PS que permiten realizar enantioselectivamente la formación de enlaces carbono-carbono y carbono-heteroátomo a través de procedimientos con las características de mejora de la sostenibilidad en procesos organocatalíticos altamente eficientes vía mecanismos tipo enamina e ión iminio así como reacciones en cascada así como su aplicación en condiciones de flujo continuo. También se describen ligandos quirales para la reducción asimétrica d
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8

Thomson, Steven J. "Hydrosilylation of alkenes using polymer-supported platinum catalysts." Thesis, University of Strathclyde, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.400285.

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9

Maddocks, Suzanne. "Novel polymer supported reagents for asymmetric catalysis." Thesis, Loughborough University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274897.

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10

Noschese, Annarita. "Sustainable catalysis by polymer supported gold nanoparticles." Doctoral thesis, Universita degli studi di Salerno, 2016. http://hdl.handle.net/10556/2206.

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2014 - 2015<br>Gold Nanoparticles are nanomaterials whose properties are completely different from the ones of the bulk material. Nowadays many chemists have been using them as catalysts which work under mild conditions and respect the principles green and sustainable chemistry. The increasing need for new heterogeneous catalysts to be applied in industrial processes encourages the finding of efficient and selective catalytic systems. The aim of the current PhD project is the synthesis of gold nanoparticles (AuNPs) supported onto a porous polymer matrix, consisting of syndiotactic polystyrene
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11

Shan, Jingning. "Polymer-supported catalysts for oxygen reduction and methanol oxidation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0017/MQ55541.pdf.

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12

De, Miguel Yolanda Rufina. "Design and synthesis of polymer-supported ligands for catalysts." Thesis, Imperial College London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264808.

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13

Shearer, Alison. "Polymer-supported catalysts : improving our understanding of heterogeneous systems." Thesis, King's College London (University of London), 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.406795.

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14

Swann, Andrew Thomas. "Characterization of polymer-supported homogeneous catalysts by molecular modeling." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26702.

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Thesis (Ph.D)--Chemical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Ludovice, Pete; Committee Member: Grover, Martha; Committee Member: Jones, Christopher; Committee Member: Realff, Matthew; Committee Member: Sherrill, David. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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15

Salih, Omar Abdullah. "Towards polymer supported iridium borylation catalysts for organic synthesis." Thesis, Durham University, 2016. http://etheses.dur.ac.uk/11715/.

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The first chapter contains a detailed explanation of the borylation of arenes using iridium catalysts with different ligands. Phosphine, N,N-aryl and carbene ligands have been studied previously for the borylation of substituted aromatic and heteroaromatic compounds. The importance of polymer supported catalysts is shown. Examples of polymer supported iridium catalysts for the borylation of arenes are given. Chapter 2 discusses the preparation of 2-arylquinoline and quinolone derivatives. These were prepared by reaction of 3-methoxy and 3,5-dimethoxy aniline with malonic acid to generate the 2
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16

Castro, Cevallos Ursula Isabel. "Phenol oxidation catalysed by polymer-supported metal complexes." Doctoral thesis, Universitat Rovira i Virgili, 2009. http://hdl.handle.net/10803/8577.

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Focussing on the treatment of industrial effluents with high content of organic compounds, the advanced oxidation processes (AOPs) develop technologies such as the catalytic wet peroxide oxidation of organic compounds (CWPO). The improvement of this process is based on the variation either of the catalyst or the oxidant source. The present research work proposes to get advantage of the catalytic activity of homogeneous catalysts, avoiding the metal contamination of the reaction media by the heterogenization of Cu(II) ions over polymeric matrices, to finally use them as catalysts in the CWPO of
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17

Mandal, Bablee. "Development of polymer supported reagents and catalysts in organic transformations." Thesis, University of North Bengal, 2009. http://hdl.handle.net/123456789/1304.

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18

Cooke, Paul Richard. "The oxidation of alkenes catalysed by polymer supported metalloporphyrins." Thesis, University of York, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333743.

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19

Brewer, Jason Robert. "Application of polymer supported catalysts to the tritiation of organic compounds." Thesis, University of Surrey, 1991. http://epubs.surrey.ac.uk/842948/.

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As more active pharmacological agents are discovered, the study of their absorption, distribution and metabolism is made more difficult by the resulting lower dosage levels. The role of radioactive isotopes is central to this work, consequently great effort has been made towards the discovery of routes to molecules labelled with radioactive isotopes. The work discussed in this thesis represents the first application of polymer supported catalysis in the tritiation of organic molecules. Where appropriate, 3H NMR spectroscopy was used to delineate labelling patterns, which in turn allow mechanis
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20

Canali, Laetitia M. N. "The synthesis and use of polymer-supported Jacobsen and related catalysts." Thesis, University of Strathclyde, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301569.

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21

Kasaplar, Ozkal Pinar. "Polymer supported and homogeneous organocatalysts for asymetric reactions: from batch to continuous flow applications." Doctoral thesis, Universitat Rovira i Virgili, 2014. http://hdl.handle.net/10803/284154.

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El objetivo general de esta tesis es establecer una ruta sintética para la inmovilización de organocatalizadores en soporte polimérico. En primer lugar, describimos el desarrollo de α,α-difenylprolinol metil/trimetilsilil éteres soportados en poliestireno (PS) a través de cicloadiciones azida-alquino catalizadas por cobre (CuAAC). Además, se tratará la preparación de tiourea homogéneas derivadas de prolina, asi como organocatalizadores de tipo squaramida y tiourea soportados en poliestireno para su uso en catálisis se enlace de hidrojeno. La formación y la aplicación de éteres de diarilprolino
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22

Eriksen, Heidi Sofie. "The synthesis and use of polymer supported β amino sulfur containing catalysts." Thesis, University of Strathclyde, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248596.

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23

Choi, Kwok-wai Matthew, and 蔡國偉. "Carbenoid transfer reactions catalyzed by arene ruthenium complexes and polymer supported ruthenium catalysts." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B4088773X.

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24

Choi, Kwok-wai Matthew. "Carbenoid transfer reactions catalyzed by arene ruthenium complexes and polymer supported ruthenium catalysts." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B4088773X.

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25

Nazari, Seyed Hadi. "Selective Catalysis by Polymer-Supported Ruthenium NanoparticlesAND New Ligand Design for Cooperative and Bimetallic Catalysis." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/7386.

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The abstract is the summary of three different projects all centered around the generalidea of catalysis which is the general theme of research in the Michaelis laboratory. The firstproject focuses on development of a new heterogeneous catalyst for selective catalysis. In theMichaelis lab, we were interested in the potential of nanoparticle catalysts for regioselectivetransformations. We showed that polymer supported ruthenium nanoparticles performed as areliable catalyst for regioselective reduction of azide to amine. In our study of regioselectivereduction of multiple azide containing substr
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26

Leanord, Donald Robert. "A study of the oxidation of alkenes catalysed by polymer supported iron porphyrins." Thesis, University of York, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329654.

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27

Riegel, Nadège. "Synthèse de complexes de métaux de transition à partir des phosphines borane : application en catalyse homogène supportée sur polypyrrole." Cergy-Pontoise, 1997. http://www.theses.fr/1997CERG0023.

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Ce travail en deux parties avait pour objet l'utilisation des phosphines borane pour préparer des complexes de métaux de transition, en vue de leur application en catalyse homogène supportée ou non. La premiere partie concerne l'utilisation directe des phosphines borane pour préparer des complexes organometalliques. Pour cela deux strategies ont ete developpees, qui consistent soit en un echange de ligand entre une phosphine borane et un complexe organometallique (tungstene-thf), soit en l'utilisation des proprietes reductrices du groupement borane vis a vis de complexes du palladium(ii), du c
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28

Petrik, Leslie F. "Pt Nanophase supported catalysts and electrode systems for water electrolysis." Thesis, University of the Western Cape, 2008. http://hdl.handle.net/11394/2743.

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Doctor Scientiae - DSc<br>In this study novel composite electrodes were developed, in which the catalytic components were deposited in nanoparticulate form. The efficiency of the nanophase catalysts and membrane electrodes were tested in an important electrocatalytic process, namely hydrogen production by water electrolysis, for renewable energy systems. The activity of electrocatalytic nanostructured electrodes for hydrogen production by water electrolysis were compared with that of more conventional electrodes. Development of the methodology of preparing nanophase materials in a rapid, effic
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29

Wightman, Alan. "Some studies on polymer-supported quaternary 'onium salts as phase transfer catalysts and ion-exchange resins." Thesis, Lancaster University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279953.

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30

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

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31

Takeuchi, Norimitsu. "Studies on Oxidative Degradation of Carbon Support of Electrocatalysts for Polymer Electrolyte Fuel Cells." Kyoto University, 2017. http://hdl.handle.net/2433/225965.

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32

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

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33

Udumula, Venkata Reddy. "Synthesis, RNA Binding and Antibacterial Studies of 2-DOS Mimetics AND Development of Polymer Supported Nanoparticle Catalysts for Nitroarene and Azide Reduction." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/6031.

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Project I 2-Deoxystreptamine (2-DOS), the most conserved central scaffold of aminoglycosides, is known to specifically recognize the 5'-GU-'3 sequence step through highly conserved hydrogen bonds and electrostatic interactions within and without the context of aminoglycosides (Figure 1a). We proposed that a novel monomeric unnatural amino acid building block using 2-DOS as a template would allow us to develop RNA binding molecules with higher affinity and selectivity than those currently available. Conjugating two or more of the monomeric building blocks by an amide bond would introduce extra
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34

Lambert, Romain. "Nouveaux copolymères et nanostructures dérivés de liquides ioniques à base d'imidazoliums : applications en catalyse et comme additifs conducteurs ioniques." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0306/document.

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Des poly(liquides ioniques) (PILs) arrangés sous la forme de copolymères statistiques,de nanoparticules à chaine unique ou bien sous la forme de copolymères à blocs autoassemblés ont été employés comme précurseurs de carbènes N-hétérocycliques (NHC)s à des fins de catalyses organiques ou organométalliques. L’introduction d’anions acétate dans des unités PIL dérivés d’imidazolium permet la génération in situ de NHCs actifs en catalyse. Les nanoparticules composées d’une chaine unique polymère repliée sur elle-même (SCNP) ont été spécialement conçues selon deux stratégies impliquant, d’une part,
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35

Pinaud, Julien. "Catalyse organique par les carbènes N-hétérocycliques (NHCs) et leur version supportée sur polymères à des fins de recyclage." Thesis, Bordeaux 1, 2010. http://www.theses.fr/2010BOR14135/document.

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Des carbènes N-hétérocycliques (NHC)s ont été employés comme catalyseurs organiques de la polymérisation par étapes du téréphtaldéhyde. Cette partie est une application en chimie des polymères de la réaction de « condensation de la benzoïne » catalysée par les NHCs impliquant un mono-aldéhyde analogue. Des poly(1,4-phénylène-1-oxo-2-hydroxyéthylène)s ou « polybenzoïnes » ont ainsi été obtenus par polymérisation en solution dans le DMSO ou le THF comme solvant à une température inférieure à 40 °C. La présence de chaines de polybenzoïne cycliques a pu être mise en évidence. La proportion de ces
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36

HUANG, SHUN-MING, and 黃順明. "Study of polymer supported electroless nickel catalyst." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/40841469873721397944.

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37

謝家榮. "Hydrolysis reaction catalyzed by polymer-supported catalyst." Thesis, 1987. http://ndltd.ncl.edu.tw/handle/93919780598784289456.

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38

Iou, Zsun-Sien, and 尤順賢. "Synthesis and Application of Polymer-Supported Catalyst On Cyclohexane Oxitation Reaction." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/97927988612713980555.

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碩士<br>南台科技大學<br>化學工程與材枓工程系<br>94<br>The metal chelating functional copolymer, poly(styrene-co-divinyl benzene-co-glycidyl metharylate-iminodiacetic acid), was prepared by using slurry polymerization and used as a catalyst support for cyclohexane oxidation. The copolymer was characterized by using of Element analyzer (EA), Fourier transfer infrared spectrophotometer (FT-IR), N2 adsorption/desorption (BET), Atomic absorption spectrophotometer (AA), Thermo gravimetric analysis (TGA) and Scanning electron microscope (SEM). After metal ions (Co(II), Fe(II), Mn(II), Cu(II), Ni(II)) were chelated on
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Choi, Ja-Yeon. "Nanostructured Materials Supported Oxygen Reduction Catalysts in Polymer Electrolyte Membrane Fuel Cells." Thesis, 2013. http://hdl.handle.net/10012/7437.

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Polymer electrolyte membrane (PEM) fuel cells have been viewed as promising power source candidates for transport, stationary, and portable applications due to their high efficiency and low emissions. The platinum is the most commonly used catalyst material for the oxygen reduction reaction (ORR) at the cathode of PEM fuel cells; however, the limited abundance and high cost of platinum hinder the large-scale commercialization of fuel cells. To overcome this limitation, it is necessary to enhance the catalyst utilization in order to improve the catalytic activity while decreasing or eliminating
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40

陳惠君. "Study on the Oxidation Reactions Catalyzed by Polymer-Supported Catalyst with EDTA Side Group." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/36955107568026213428.

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碩士<br>國立成功大學<br>化學工程學系<br>87<br>The autooxidation of cumene and benzaldehyde to produce cumene hydroperoxide and perbenzoic acid in the presence of polymer-supported catalyst was investigated. The catalyst was prepared by chelated metal ions onto polymer support which was glycidyl methacrylate-styrene — acrylnitrile copolymer with containing iminodiacetic acid chelate group. The catalyst wascharacterized by means of EA, IR, BET, ICP-MASS and SEM studies. The reaction products were characterized by HPLC, GC-MASS, H1NMR. Based on the analysis of experimental kinetic data , a possibile
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41

Aggarwal, Ravi. "Supported Aqueous-Phase Catalysis for Atom Transfer Radical Polymerization." 2010. http://trace.tennessee.edu/utk_graddiss/771.

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Atom transfer radical polymerization (ATRP) which utilizes transition metal based catalysts is a versatile methodology for the synthesis of a wide spectrum of polymers with controlled architectures. However, high concentrations of soluble catalyst required in an ATRP process makes the final polymer colored and toxic. Thus, the catalyst removal/reduction/recycling remains a challenge in the field of ATRP. Supported catalysts on insoluble solids such as silica gel, polystyrene beads, etc. have been used in ATRP to facilitate the catalyst recovery and recycling. However, the ability of the suppor
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42

Anyanwu, Uche K. "Soluble polymer-supported catalysts and initiators." 2005. https://scholarworks.umass.edu/dissertations/AAI3179852.

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The development of polymer-supported chiral organic ligands for transition metal asymmetric catalysis is an area of research that is continuously receiving a lot of interest. This methodology addresses the major issue of recyclability and waste/product stream contamination in conventional homogeneous catalysis. The use of soluble polymers, as supports, couples the advantages of homogeneous and heterogeneous catalysis and offers a means of recycling often expensive chiral ligands. The goal is to recycle the catalysts over multiple runs without loss of its activity. A novel semi-continuous techn
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43

Deverell, JA. "Porous polymer monolith supported Suzuki-Miyaura catalysis in microreactors." Thesis, 2011. https://eprints.utas.edu.au/12430/1/Front-JAD_Final_PhD_Thesis_Sept_2011.pdf.

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Miniaturisation of reactions to the sub-millilitre scale, through the use of microreactor technology, has the potential to reduce costs by drastically reducing reaction times, improving yields and selectivities, as well as decreasing the environmental impact by reducing reagent and solvent use. Further improvements can be achieved by utilising heterogeneous and supported catalysts within microreactors in order to increase reaction efficiency, reduce energy requirements, and simplify product purification. This should also enable the integration of microreactors with other existing microf
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44

Ndawuni, Mzikayise Patrick. "Pyridine and amine functionalized polymers by anionic and controlled free radical polymerization methods." Thesis, 2009. http://hdl.handle.net/10500/3906.

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The synthesis of dipyridyl functionalized polysulfones with improved hydrophilicity, enhanced membrane morphology and excellent ATRP polymeric ligand properties was conducted by the following method: (a) the formation of lithiated polysulfone from unmodified polysulfone and the subsequent reaction with 2,2'-vinylidenedipyridine in tetrahydrofuran at -78 oC under argon atmosphere to afford the corresponding dipyridyl functionalized polysulfone. The stoichiometry of the reaction affects the degree of functionalization of the product. When equimolar amounts of 2,2'-vinylidenedipyridine are added
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45

Jiang, Xiaoming. "Hairy Particles: Polymer Brush-Supported Organocatalysts and Asymmetric Mixed Homopolymer Brushes." 2010. http://trace.tennessee.edu/utk_graddiss/808.

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This dissertation presents the synthesis and studies of polymer brush-supported organocatalysts and asymmetric mixed homopolymer brushes grafted on particles. The brushes were synthesized from initiator-functionalized particles by surface-initiated “living” radical polymerizations. Polymer brush-supported organocatalysts were designed to combine the advantages of both soluble polymer- (high activity) and crosslinked insoluble polymer-supported catalysts (recyclability). Chapter 1 describes the synthesis of a polymer brush-supported 4-N,N-dialkylaminopyridine (DAAP) catalyst from initiator-func
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46

Hsiao, Ming-Chieh, and 蕭明傑. "Synthesis of Cross-linked Polymer Supported Vanadium Complexes and Their Application on Catalysis." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/35178229887442933776.

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碩士<br>臺灣大學<br>化學研究所<br>98<br>The main focus of this study is to immobilize the catalysts on the solid supports and make them recyclable. Compared with the general inorganic supports, the cross-linked polymer supports promoted the activities of the catalysts by providing the affinity with the reactants. Here, we synthesized poly(methyl acrylate) with different chain lengthes via atom transfer radical polymerization (ATRP), and turned it into more stable material by reaction with two kind of cross-linker CL1 and CL2 respectively, and then hydrolyzed the ester group into the carboxylate functiona
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47

Petrik, Leslie Felicia. "Pt Nanophase supported catalysts and electrode systems for water electrolysis." Thesis, 2008. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_4944_1264036012.

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<p>In this study novel composite electrodes were developed, in which the catalytic components were deposited in nanoparticulate form. The efficiency of the nanophase catalysts and membrane electrodes were tested in an important electrocatalytic process, namely hydrogen production by water electrolysis, for renewable energy systems. The activity of electrocatalytic nanostructured electrodes for hydrogen production by water electrolysis were compared with that of more conventional electrodes. Development of the methodology of preparing nanophase materials in a rapid, efficient and simple manner
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48

Fiore, Ambra Maria. "Chemical reactions catalysed by metal nanoparticles under sustainable conditions." Doctoral thesis, 2020. http://hdl.handle.net/11589/188722.

Full text
Abstract:
Metal nanoparticles (NPs) and nano-catalysts are largely investigated given their unique properties. With the recent advances in nanochemistry and particularly in the synthesis of new highly active catalyst, nanocatalysis is now recognized as a full and rich part of catalysis. In the present research, an environmentally friendly synthetic method was developed for preparation of a new polymer supported Ni NPs (Ni-pol), generated by calcination under nitrogen of Ni(II) containing polyacrylamide. Ni-pol catalysed the hydrogenation of nitroarenes to anilines in aqueous medium, the one pot stepwise
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