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 3173 for “"catalyst"”.
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Characterising catalyst preparation: from adsorbed precursor complex to catalyst particle
Catalyst performance can be enhanced by the high dispersion of precious metals onto supports. The deposition of metal particles and the structural arrangement they adopt once impregnated on a support is therefore of interest in determining the necessary conditions required for maximum catalyst …
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Amine and Catalyst Stability Studies in the Catalyst-Aided CO2 Capture Process
The application of sol id base and sol id acid catalysts to improve CO2 capture has been one of the most notable technological advancements in amine-based post -combust ion capture. Despite the inherent benefits of the catalysts, the amine solvent is st i l l prone to degradation, which is a major …
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The Urban Catalyst Concept
Urban catalysts are new redevelopment strategies comprised of a series of projects that drive and guide urban development. Redevelopment efforts in the past, such as urban renewal and large-scale redevelopment projects, have often jeopardized the vitality of downtowns. The difference between the …
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Bimetallic Catalyst for Lignin Depolymerization
… catalytic systems, a copper-doped porous metal catalyst has been researched often due to the ability to product hydrogen via alcohol reforming and perform hydrogenolysis for lignin depolymerization at aryl-ether linkages. Process. However, the use of nickel in other catalytic systems suggest a …
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ENZYME-LIKE DNA CATALYST DESIGN
… existing systems are often limited by difficult catalyst construction, narrow Lewis-acid-centered reaction scope, and unclear stereocontrol mechanisms. To address these issues, a chemoenzymatic modification strategy is introduced, combining DNA base excision repair with oxime/hydrazone ligation …
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Hydroquinone as an oxidation catalyst
Thesis (M.S.)--Michigan State College of Agriculture and Applied Science, 1926
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Studies on Methylaluminoxane Catalyst Activators
The first part of this PhD was devoted to the structural characterization of methylaluminoxane (MAO). Initially the work focused upon MAO formation by studying the hydrolysis reaction of trimethylaluminium (TMA), with a greater interest in the initial reaction steps of TMA with H2O. This was …
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Integrated curriculum: art as catalyst
An arts based integrated curriculum plan is what resulted from a look at integrated curriculum and the advantages it has for student learning and success. We take a look at integration and how it is defined, practicing schools, and finally a three unit curriculum plan with full lesson plans …
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Influence of catalyst ink mixing procedures on catalyst layer properties and in-situ PEMFC performance
… been directed towards developing more active catalysts, the amount of catalyst required in the fuel cell can be further reduced by improving the platinum utilisation in the membrane electrode assembly. The platinum utilisation is a strong function of the catalyst layer preparation step and …
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DISINFECTION USING A NOVEL HETEROGENEOUS CATALYST
… work to investigate the potential of a novel catalyst in activating H2O2 so as to reduce the concentration of H2O2 used and the time taken for disinfection. The antimicrobial properties of an iron based novel heterogeneous polyacrylonitrile catalyst (PCat) were examined against Escherichia …
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Methane partial oxidation over phthalocyanine catalyst
… a zeolite-supported ruthenium phthalocyanine catalyst is studied in a packed bed reactor. The investigation of such reaction is desirable because partial oxidation of methane yields a synthesis gas that can be upgraded to liquid chemicals and fuels. Reactants of this study are He-diluted CH_4 …
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Monolith Catalyst Supports for Hydrogen Production
… ruthenium supported on gamma-alumina (Ru/ -AbOo) catalyst.. However, it has been observed that. upon increasing the sea.le, pressure-drop and mass transfer limitations become significant issues. It is, therefore, desired to shift from packed bed reactors to monolithic reactors to overcome these …
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Elsieskraal: River restoration as urban catalyst
Water is one of the main issues of the 21st century. Climate change and biodiversity loss, driven by human development, underscore the need to restore a harmonious relationship with the planet. The current global action plan to achieve this is the United Nations' 2030 Agenda, which outlines …
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Harry Partch: A Catalyst for Queer Compositionism
… labels? How can this speculation be used as a catalyst for a queer orientation of collaborative performance projects? The queer Partch that emerges from these questions haunts a series of collaborative performance projects that have offered practice-based contexts for an enquiry into my …
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Catalyst: Architecture for Change and Social Justice
In major cities today, there are neighborhoods that have been continually underserved and as a result are in decay. Private investors and developers turn to these particular neighborhoods, propose large developments that gentrify these areas, displacing communities and with them their social, …
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Poisoning and Sulfation on Vanadia SCR Catalyst
… of titania-supported vanadia commercial SCR catalysts exposed to flue gases from both coal and coal-biomass co-firing boilers were investigated. BET surface area and average pore diameter measurements on both fresh and exposed commercial catalyst samples indicated pore plugging occurred to …
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