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Showing 1 to 20 of 101 for “"Catalytic reactions"”.
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Electro-catalytic reactions
… demonstrates the utility and advantages of redox catalytic reactions and small scale synthetic applications. In particular electro-catalytic reactions are investigated along with electrogenerated chemiluminescence (ECL). ECL is used both as a probe for investigating the redox reactions and as an …
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Catalytic Reactions of Organoboranes
… can be used to generate new organoboranes under catalytic systems to allow for more controllable and efficient processes. Herein we report our efforts towards developing new catalytic methodologies for the synthesis of organoboranes.
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Isothermal Oscillations in Catalytic Reactions--a Tool for Mechanistic Discrimination
Made available in DSpace on 2014-12-13T18:55:35Z (GMT). No. of bitstreams: 1 7726750.pdf: 9272920 bytes, checksum: 2324570b54194d6909497f615b53f459 (MD5) Previous issue date: 1977
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Heteroleptic dirhodium (II,II) complexes: synthesis, spectroscopy and applications in hydroformylation and hydroaminomethylation catalytic reactions
The synthesis of a series of bis-substituted heteroleptic dirhodium(II,II) complexes containing bridging acetate and chelating bipyridyl ligands is herein described. The protons at the 4- and 4'- positions of the bipyridyl ligands on the model complex 1 were substituted by either the electron …
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An electrochemical pipette with thin-layer design for rapid electrosynthesis and mechanistic study of the catalytic reactions
… oxidation and its subsequent chemical reactions during electrolysis were successfully studied. Moreover, the integration of a microelectrode with TLE (combined TLE) enabled the real-time monitoring of redox-active intermediates formed during rapid electrosynthesis. Real-time studies of …
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Catalytic Reactions of Highly Conjugated Polymers: the Removal of Nitrogen Monoxide from Gas Streams using Pyrolysed Polyacrylonitrile
… in the polymer structure were involved in the reactions with nitrogen monoxide and oxygen. An activation energy of 10.8 kJ mol-1 was measured for the reaction between nitrogen monoxide and the 'clean' polymer surface. A mechanism is proposed for the reaction between nitrogen monoxide and …
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Utilising Boron containing Lewis Acid Functions as "Stores" for Hydride and Other functional groups and its impact on Catalytic Reactions
Transition metal mediated reactions play a vital role in the catalysis of many chemical transformations. Whilst most of these transformations occur at the metal centre, with ligands acting as spectators, new systems incorporating the direct involvement of coordinated ligands within catalytic cycles …
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Part One: Catalytic Reactions of Anion-Exchange Resin Bound Dodecarhodium Triacontacarbonyl Dianion and Its Derivatives and Part Two: Properties and Reactions of Neutral Non-Polar Solvent Soluble Binuclear Complexes
The resin support was the Dowes 1-X8 anion exchange resin in the chloride form. Exchange of the cluster at room temperature under an inert atmosphere leads to intact Rh(,12) (CO)(,30)('2-) being bound. This material exhibits only limited activity for the hydroformylation of of 1-hexene, accompanied …
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Synthese substituierter chiraler [2.2]Paracyclophane und deren Einsatz in asymmetrischen Katalysereaktionen
… were tested as ligands in asymmetric catalytic reactions. In the course of this PhD thesis, disubstituted chiral [2.2]paracyclophanes were synthesized and tested as ligands in asymmetric, catalytic reactions. One of three topics was the synthesis of …
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DEVELOPING ENANTIOSELECTIVE CYCLOADDITIONS OF REDOX-ACTIVE-DERIVED REAGENTS: A LATENT STRATEGY TO ESTABLISH MOLECULAR COMPLEXITY
… appealing abilities, many of these asymmetric catalytic reactions developed previously are less used in practical synthesis of natural products or bioactive candidates, limited by the lack of modularity and the overreliance of specific substrates and catalysts. In this thesis, we developed …
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The reactions of carbon dioxide with complexes
… of group VIII transition metals in homogeneous catalytic reactions, the work is mainly concerned with complexes of ruthenium.
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Development of ambient mass spectrometry methods for investigating iron-catalyzed oxidation reactions
Improvement of catalytic reactions relies on detailed understanding of the reaction mechanism, and this in turn depends on the ability to detect, characterize, and identify reaction intermediates that often have extremely short lifetimes or are highly unstable when removed from the reaction medium. …
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Synthetic, structural and molecular modelling studies of organoiron complexes of catalytic importance
… compounds and their relevance as models for catalytic reactions. The compounds have been synthesized by the reaction of Na[(η⁵-C₅(CH₃)₅)Fe(CO)₂] with the appropriate n-alkyl chloride or bromide (R=n-C₃H₇ to n-C₁₂H₂₅). The majority of the compounds are new and have been fully characterized by …
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Transport mechanisms and modeling of riser reactor
… hydrodynamics is closely interacted with kinetic reactions. Common models for the performance prediction of riser reactors overlook this vital coupling effect, which not only miss the important reaction characteristics in the dense-phase transport regime of riser reactors but also misinterpret the …
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Mesoporous Carbon/Silica Encapsulated Molybdenum and Ruthenium Nanocatalysts For Green Chemistry Applications
… and selective catalysts for a wide range of catalytic reactions. This PhD project focuses on developing active, selective and stable nanocatalysts for green chemistry applications. In this work, molybdenum oxide and ruthenium nanoparticles were selected as model metal oxide and metal …
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Fundamental and Applied Studies in Asymmetric Catalysis
… were synthesized as templates for asymmetric catalytic reactions that could involve substrate precoordination to a Lewis acidic site remote from the transition metal reaction site. Primary amines were found to bind reversibly via a nitrogen-boron interaction to the free ligands L*. 1H NMR …
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Getting to the Point: Bridging the Gap between Simple and Complex Catalytic Systems using Temporal Analysis of Products (TAP)
… fundamental information on a variety of catalytic reactions on the atomic level, current catalytic reactions are still carried out under atmospheric pressures or greater and on much more complex materials than single crystal surfaces. This dissertation introduces a new approach to …
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