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 51 for “"Value-added Chemicals"”.
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Electrocatalytic Conversion of Carbon Dioxide to Value-Added Chemicals
… CO2 provides another pathway to generate high-value chemicals. We developed a methodology to perform electrocatalytic carboxylation without requiring sacrificial anodes. The key design principle involves adding a salt with an inorganic cation that can suppress nucleophilic side reactions, which …
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Transformation of biomass to value-added chemicals through non-thermal plasma
… lignocellulosic biomass for producing biobased chemicals. Non-thermal plasma is emerging as a promising green, low-energy technology for biomass conversion, benefited by its ability to produce chemically reactive environment at mild conditions by using external electric field. In this PhD study, …
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Photo(electro)catalytic Processes for Producing Value-added Chemicals and Virus Inactivation
… specifically those involving the production of value-added chemicals and inactivation of viruses. The understanding of such photo(electro)catalytic processes holds the key towards a circular economy (sustainable and ecofriendly processes). I have reported four specific studies focusing on …
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Engineering yeast strains for producing fuels and value-added chemicals from cellulosic biomass
The biotechnological production of fuels and value-added chemicals from cellulosic biomass is a sustainable and ecofriendly process. Pretreatment and hydrolysis of the biomass produce six (glucose) and five-carbon (xylose) sugars, and toxic fermentation inhibitors, such as acetic acid. The …
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Technoeconomic analysis and life cycle assessment of electrochemical processes for value-added chemicals
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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Systems Metabolic Engineering of Microbial Cell Factories for the Synthesis of Value-added Chemicals
… cheaply available raw materials into valuable chemicals. Systems metabolic engineering aims at developing rational strategies for the engineering of microbial hosts by providing global level information of a cell. This dissertation focuses on metabolic engineering, bioprocess modeling and …
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Electrochemical and spectroscopic insights into the electroreduction of carbon dioxide to value added chemicals
The electroreduction of carbon dioxide to value-added chemicals, powered by renewable electricity, such as solar, wind, and geothermal energy, holds promise to enable the transition to carbon neutrality. This dissertation employs several methods to develop the porous and active catalysts for CO2 …
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Technoeconomic and mechanistic insights into the electroreduction of carbon dioxide to value added chemicals
… in the past few decades, with the daily average value crossing and staying above the 400 ppm mark in 2016 for the first time in recorded human history. These increased CO2 levels (along with other greenhouse gases) have been shown to negatively affect the earth’s surface energy balance, leading …
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Integrated catalysis for upgrading microbial derived carboxylic acids to renewable fuels and value-added chemicals
Made available in DSpace on 2016-03-02T20:57:09Z (GMT). No. of bitstreams: 2 VARDON-DISSERTATION-2015.pdf: 52345307 bytes, checksum: 5dfd45d0fc96ab45c2d89ef1e4892e6b (MD5) LICENSE.txt: 4209 bytes, checksum: e37e56b79895fa2e14c646b004b32262 (MD5) Previous issue date: 2015-09-09
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Development of Catalytic Processes for the Transformation of Low Value Chemical Feedstocks to Value Added Chemicals
… to alternative sources for fuels and commodity chemicals. This thesis describes fundamental studies and development of catalytic processes for the transformation of abundant, low value chemical resources into value added chemicals. Chapter 1 of this work gives a brief overview of the motivation, …
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Decarboxylative Transformations Facilitated via Intermolecular Halogen Transposition using gem-Bromonitroalkanes
… facile activation via decarboxylation delivers value-added chemicals in a cost effective and eco-friendly manner. In this context, photoredox-catalyzed elimination and cross-coupling methodologies were developed via merger of decarboxylation with intermolecular halogen transposition using …
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Dynamic Regulation of Metabolic Flux Using Orthogonal Quorum Sensing
… towards target pathways, improving production of value-added chemicals. One dynamic regulation strategy is quorum sensing (QS), a cell-to-cell communication that allows populations of cells to function as a collective. By applying QS to engineered pathways, the diversion of metabolic resources can …
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Enabling Cl-Based bioconversion with metabolic engineering
… strains for the conversion of C1 substrates into value-added chemicals and fuels.
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Robust Nickel Catalysts Supported By Biaryl-Bridged Pyridyl-N-Heterocyclic Carbenes For Carbon Dioxide Reduction To Value-Added Products
… C1 feedstock for conversion to solar fuels and value-added chemicals. However, CO2 is relatively inert and very negative voltages or strong chemical reductants are comfor its conversion. An additional challenge lies in achieving these reactions in water where aqueous protons are utilized …
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Experimental and DFT study on selective oxidation of 5-Hydroxymethyl furfural over cadmium sulfide catalyst
… of biomass or biomass derived intermediate to value added chemicals is a way to reduce dependency on conventional fossil fuels. Oxidation of 5-hydroximethyl furfural (HMF) is considered one of the most important biomass conversions, which resulted into value added 2,5-diformylfuran (DFF), …
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Design and engineering of multi-step (bio)catalytic systems
… been engineered to produce a wide variety of value-added and bulk chemicals to replace traditional chemical synthesis. However, researchers have just explored the tip of the iceberg in the biocatalysis area. Proteins with new catalytic functionality should be discovered or engineered to …
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Multiplexed transcriptional control strategies for biosynthesis from mixed substrates in Escherichia coli
… engineering reprograms microbes to produce value-added chemicals. Microbial production has the potential to use renewable feedstocks, such as conventional waste streams. Metabolic engineers already contend with the metabolic burden of recombinant production pathways; utilizing complex input …
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Catalytic biomass conversion and upgrading into platform chemicals and liquid fuels
… conversion and upgrading into versatile platform chemicals as well as oxygenated biodiesel and premium hydrocarbon kerosene/jet fuels is described in this dissertation. The chief motivation of using annually renewable biomass as the source of chemical building blocks and transportation fuels is to …
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Selective Oxidation Reactions: A Chemical Looping Approach
The production of chemicals is a key contributor to industrial energy demand and greenhouse gas emissions. Chemical looping (CL) offers a novel route to improve energy efficiency and environmental performance, hence investigated in this Dissertation for two selective oxidation reactions: (i) the …
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Method Development Towards Catalytic Transformations of Reactive Intermediates
… project were to access bioactive material or value added chemicals via the simplest and shortest route possible, limit the toxicity of each component of the reaction, and develop methods that were chemo- and regioselective with limited side reactions to provide a platform for further diastero- …
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