Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 3243 for “"catalytic"”.
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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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Developing sustainable catalytic methods
… product yield, leading to less waste. Developing catalytic methods that fit this criterion, as well as the additional need of being economically viable is however not trivial and presents many challenges.<br/><br/>This thesis explores two approaches to increasing the industrial appeal of two …
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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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Catalytic and non-catalytic mechanisms involved in Glutathione S-transferase Pi mediated cytoprotection
… functions of GSTP1 which are independent of its catalytic activity. Initial in vivo studies have identified that targeting a Tyr7Phe substitution in the murine Gstp1 gene results in a GSTP1 protein which is devoid of catalytic activity. When challenged with a toxic dose of acetaminophen, these …
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Catalytic Degradation of Waste Polymers
Plastics have become an integral part of our lives. However, the disposal of plastic waste poses an enormous problem to society. An ideal solution would be to break down a polymer into its monomer, which could then be used as the building-blocks to recreate the polymer. Unfortunately, the majority …
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Catalytic hydrogenation using titanium complexes
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1995.
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Amide hydrolysis by catalytic antibodies
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1996.
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Factors influencing the catalytic activity of Fe-ZSM-5 during the catalytic conversion of N₂O
… its oxidation state (Fe²⁺, Fe³⁺, or Fe⁴⁺). Catalytic function of isolated redox sites within zeolite cavities (or channels) may result in a material with specific redox properties (Kiwi-Minsker et al., 2003). The properties of transition metal exchanged zeolites have been studied from the …
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Resonance Forcing in Catalytic Surface Reactions
Die vorliegende Arbeit untersucht theoretisch und experimentell die raumzeitliche Musterbildung der CO-Reaktion auf Pt(110) mit den Methoden der nichtlinearen Dynamik. Die Reaktion selbst ist eine gut erforschte und verstandene chemische nichtlineare Reaktion auf einer Einkristalloberfläche. Es …
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Advancing plastics reutilization via catalytic hydroconversion
Plastics have become ubiquitous in modern life, leading to global plastic production of 460 Mt in 2019, which is expected to triple by 2060. However, 99% of all plastic waste has been disposed of via dead-end methods (i.e., incineration, landfills, and the environment). Alternative strategies must …
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Catalytic upgrading of residual fuel oil
Includes bibliographical references.
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Catalytic Bitumen Upgrading under Methane Environment
… and the academic research. In this thesis, three catalytic formula are identified through the catalysts screening. All these catalysts show a significant viscosity reduction companied by acceptable coke yield, better stability and compatibility and the high liquid yield. With series of experiment …
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Catalytic Activity of Molybdenum-Dioxo Complexes
… the optimization of ideal reaction conditions. Catalytic activity was observed to be dependent on the ligand environment. The smaller electronically demanding ligand environment showed readily rapid reactivity for aromatic diols, but competitive side reactions and catalyst dimerization occurred. …
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Catalytic, Enantioselective Cyclopropanation of Allylic Alcohols
… evidence concerning the active form of the catalytically operative species to rationalize many of the observed features and trends of this system. Features illustrated to be critical for the best levels of stereocontrol were (1) formation of the ethylzinc alkoxide, (2) use of the …
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Asymmetric catalytic epoxidations of simple olefins
Two types of chiral (salen)Mn(III) complexes, either cationic or neutral, were synthesized by complexation of the corresponding chiral salen ligands with manganese salt. Neutral Mn(III) salen complexes were prepared from the ligands and $\rm Mn(OAc)\sb2{\cdot}4H\sb2O$ via in situ aerial oxidation …
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Modelling Non-Catalytic Gas-Solid Reactions
… a general reaction and diffusion model for non-catalytic reactions between gases and porous solids, particularly those relevant to the clean use of fossil fuels. Here, the internal pore structure of the solid was characterised by observing the kinetics in a regime limited only by intrinsic …
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Catalytic one-carbon homologation of alkenes
… need. This thesis describes the development of a catalytic, one-pot method for the one-carbon homologation of alkenes. The methodology leverages the intrinsic reactivity of an allyl sulfone reagent, which undergoes coupling with the target alkene via an olefin metathesis reaction. This process …
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