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 62 for “"microreactors"”.
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Electroorganic synthesis in microreactors
At present, description of applications, using electrochemical micro reactor are rare. Such techniques are extremely desirable to pharmaceutical companies who are interested in the high throughput synthesis of combinatorial libraries for pharmaceutical evaluation. Furthermore, techniques such as …
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Hydrodynamically modulated voltammetry in microreactors
This thesis describes modulated methods using both voltammetric and microfluidic perturbations to study mechanisms of electrolysis reactions. The initial chapters provide an overview of applications and research development in the fields of micro-engineering and electrochemistry, including …
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Laminar Flow-Based Electrochemical Microreactors
… multistream laminar flow-based electrochemical microreactors are presented: (i) biocatalysic reactors for efficient regeneration of nicotinamide cofactors for biocatalysis; (ii) membraneless fuel cells; and (iii) biofuel cells that utilize the ability to tailor the composition (e.g. pH) of the …
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Optofluidic Microreactors for Advanced Photocatalysis
This PhD project explores the application of hollow-core photonic crystal fibres (HC- PCFs) as a novel and advanced characterization technique to monitor photocatalysis. The use of HC-PCFs as the core element of a newly developed characterisation platform has many benefits: HC-PCF’s light-guiding …
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Chemoenzymatic reactions in continuous flow microreactors
Contains fulltext : 135194.pdf (Publisher’s version ) (Open Access)
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Characterization and systems integration of microreactors
… work demonstrates the integration of multiple microreactors operating in parallel within a system that includes gas flow control components and the associated electronic circuitry. The system built is equivalent to a conventional laboratory reactor system but in 1/10th of the space. Fluidic and …
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Ceramic Microreactors for on-Site Hydrogen Production
The development of microreactors has been growing rapidly in recent years. The advantages of using microreactors over macroscale reactors make them useful for various applications, including catalyst development and optimization, on-site synthesis of hazardous chemicals and reactive intermediates, …
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Microreactors for the Production of Hydrogen From Ammonia
… of structured aluminum-anodized alumina microreactors that exhibit high catalytic activity for the decomposition of anhydrous ammonia to nitrogen and hydrogen at moderate temperatures. Experiments involving reactor fabrication methods and optimizations of reactor catalyst support were …
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Evaluating Nuclear Energy Power Conversion Cycles for Microreactors
Microreactors have become increasingly popular in the past decade, but the economics of these technologies has yet to be proven. Analysis is required to support the development of microreactor designs by comparing design choices and predicting costs. A simulation tool was developed which estimates …
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Design and Fabrication of Microreactors for High Temperature Applications
Microreactors show promise because of the phenomenon of higher heat and mass transfer rates as the length scale decreases. This thesis describes the fabrication and characterization of SiC and SiCN inverted beaded catalyst supports, which have high chemical and thermal stability (are stable to …
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In-situ monitoring of photocatalytic reactions in optofluidic microreactors
… is a growing need to develop optically efficient microreactors that allow rapid changes in reaction conditions for catalyst screening. In addition, such microreactors should offer strong light-matter interactions for the in-situ spectroscopic detection of chemical species. Motivated by these …
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Multimodal in-situ spectroscopy of novel enzyme mimics with optofluidic microreactors
Photocatalysis plays a key role in ensuring a more sustainable future through harnessing the power of the sun for solar fuel production, degrading harmful environmental pollutants and driving the green synthesis of valuable organic products. Despite their significant potential, the current …
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Quantitative modeling and characterization of hydrodynamics and transport in multiphase microreactors
… with important industrial applications, and microreactors have been shown to effectively enhance the efficiency of such reactions. However, compared to single-phase flow chemistry systems, many unknowns remain in the design, optimization and scale-up of multiphase microreactors - primarily …
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Site Selection, Vendor Evaluation, and Deployment of Nuclear Microreactors in Remote Mining Operations
… and vendor selection for deploying nuclear microreactors in remote mining areas to facilitate decarbonization efforts. The methodology involves utilizing data gathered through various internal sources and employing software tools such as HOMER Pro Grid Optimization software and Python for …
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Modeling of microreactors for clean dispatch of electricity and process heat in a campus setting
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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Technical and Commercial Feasibility Assessment of Nuclear Microreactors as a Clean Energy Source for Data Centers and Mining Sites
Nuclear Microreactors are 1-10MWe stand-alone, plug-and-play energy platforms that can supply electricity and heat from a small footprint. Factory-assembled and factory-fueled, they are compact enough to fit within ISO standard shipping containers. Proposed to be used as a co-located source of …
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Automated microreactor system for reaction development and online optimization of chemical processes
… studies have illustrated the benefits of silicon microreactors for the study of chemical reactions. Such advantages include the small reactor volume and the continuous flow operations that enable microreactors to achieve a high throughput rate of experiments while using minute amounts of expensive …
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Levelized Cost of Fuel (LCOF) studies for microreactors using TRISO fuel in hydride and beryllium-based composite moderators in open and closed fuel cycles
… batteries—high-temperature gas-cooled 10 MW_th microreactors (HTGRs) with TRISO fuel in prismatic- and pebble-bed cores—using four composite moderator concepts (MgO–Be, MgO–BeO, MgO–YH, MgO–ZrH). These options are compared against a prismatic graphite benchmark, under both once-through and …
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Nuclear Microreactor-Powered Container Ships for Maritime Decarbonization
… infrastructure, safety, and cost. Nuclear microreactors offer high energy density, zero operational emissions, and multi-year endurance, but require coordinated regulatory development and stakeholder engagement for commercial adoption. This thesis evaluates the feasibility of integrating …
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Effect of a co-solvent feedstock on the synthesis of biodiesel via heterogeneous catalysis
… with the heterogeneous catalyst nickel oxide. Microreactors are being used to improve the efficiency of the production of biodiesel. The smaller scale makes it possible to produce biodiesel in seconds compared to what industrial biodiesel production requires hours to accomplish. There are …
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