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 31 for “"CO2 conversion"”.
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Amine promotion of hydrogen evolution reaction suppression and CO2 conversion for artificial photosynthesis
Recycling CO2 back into fuels or other useful products is critically important to the global efforts to reduce greenhouse gases and global warming [1-3]. The electrochemical method is regarded as a promising means to do this because it has the advantage that water can be used as the proton source …
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Microbial CO2 Conversion to Acetic Acid: From Laboratory Testing to an Industrial-Scale Model
L'abstract è presente nell'allegato / the abstract is in the attachment
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Steam Electrolysis Coupled with CO2 Conversion in a Pressurized Proton Conducting Solid Oxide Electrolysis Cell
… for steam electrolysis coupled with the conversion of CO2 into fuels is a promising strategy for mitigating global warming. The aim of this research was to design and test a pressurized H-SOEC with an active Fischer-Tropsch cathode. Although no liquid hydrocarbons were produced at …
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Development of iron (III) tetra(meso-aryl)porphyrins and N-annulated perylene diimide tethered rhenium (I) bipyridine supramolecular dyads for carbon dioxide conversion catalysis
… complexes for applications in carbon dioxide (CO2) conversion catalysis. Chapter One introduces the notion of closing the carbon loop, as well as explores state-of-the-art molecular organometallic complexes based upon the iron (III) tetra(meso-aryl)porphyrin and rhenium (I) (2,2’-bipyridine) …
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Low temperature electrocatalytic reduction of carbon dioxide utilizing room temperature ionic liquids
… have been stymied because of the lack of a CO2 conversion catalyst that operates at low overpotentials. In this study we report a catalyst system that shows CO2 conversion at low overpotentials. The system uses two different catalysts to achieve the conversion. First an ionic liquid or ionic …
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Low temperature electrocatalytic reduction of carbon dioxide utilizing room temperature ionic liquids
… have been stymied because of the lack of a CO2 conversion catalyst that operates at low overpotentials. In this study we report a catalyst system that shows CO2 conversion at low overpotentials. The system uses two different catalysts to achieve the conversion. First an ionic liquid or ionic …
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Technoeconomic Assessment of Carbon Dioxide Conversion Projects in a Canadian Context
The emerging field of CO2 conversion has the dual goals of reducing anthropogenic greenhouse gas emissions and creating economic value from a waste. The technologies involved may enable the decarbonization of industrial process emissions through the displacement of incumbent production methods. …
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Carbon Supported Metal Carbide Catalysts for the Reduction of Carbon Dioxide
… of active and selective catalysts for the conversion of CO2 into valuable products is a promising strategy for reducing the environmental impact of CO2 released from the use of fossil fuels. The manufacture of these catalysts should also consider the use of waste materials and reduction of …
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Elucidating trends and transients in CO2 dissociation
… that occur in non-thermal plasmas containing CO2, mostly for CO2 conversion. In particular, the focus lies on the transient behaviour of these discharges: how do these systems evolve over time before they settle in a (non-thermal) equilibrium. In addition to that, it analyses trends in the …
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Understanding Interfacial Kinetics of Catalytic Carbon Dioxide Transformations from Multiscale Simulations
Carbon dioxide (CO2), as a greenhouse gas, has shown to achieve the highest level in history, causes the global warming issue, leading to a 1.2 ℃ increase of the global average temperature. The consumption of fossil fuels is one of the main reasons that cause CO2 emission. Current industrial …
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DEVELOPMENT OF MATERIALS AND ELECTRODES FOR MICROBIAL BIOELECTROLYSIS SYSTEMS AND MONITORING OF MICROBIOLOGICALLY INFLUENCED CORROSION
… methanation environments, and bioelectrochemical CO2 conversion using alternative inocula from geothermal emissions. The first part focuses on reducing precious metal demand in proton exchange membrane water electrolysis by rational catalyst design. A core-shell IrO2@TiO2 catalyst was developed by …
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CO2 capture and utilization using dual-functional catalysts
The excessive atmospheric CO2 emission is one of the main contributions to the global climate change. However, with the growth of global economics, more fossil fuels will be consumed to feed the global activity, especially in developing countries. Thus, carbon capture storage and utilization draws …
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Effects of different ligands on the binding of a palladium center in a pyridyl spaced dicarbene
… be discussed in terms of catalyst design for CO2 conversion.
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A Study on Catalytic Sites Contiguity in Cu-ZnO-Based Catalysts for CO2 Hydrogenation to Methanol
… the catalytic performance for carbon dioxide (CO2) conversion reactions. This work continues to investigate the CSC-performance relationship of CO2 hydrogenation to methanol (MeOH) in various Cu–ZnO systems. Three phases are formulated as follows. Phase 1 studied the CSC of atomically-dispersed …
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Modeling Three Reacting Flow Systems with Modern Computational Fluid Dynamics
… and analysis were used in three projects: solar CO2 conversion modeling, improved coal combustion modeling using STAR-CD, and premixed combustion modeling. Each project is described below. The solar CO2 conversion modeling project involved CFD simulations of a prototype solar CO2 converter that …
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UNCOVERING FUNDAMENTAL PHYSICS OF ENERGY MATERIALS WITH QUANTUM MECHANICS, MOLECULAR DYNAMICS, AND APPLIED MACHINE LEARNING
The preservation, manipulation, and conversion of energy is one of the greatest challenges of the 21st century. One of the most powerful tools we have to control it is to improve electronics and catalysts with materials science and engineering. Experimental techniques alone are not sufficient to …
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Investigating electrochemical reduction processes via in situ enhanced Raman spectroscopy for carbon dioxide conversion and copper deposition
… species on the reduction reactions involved in CO2 conversion and Cu metal plating. Using renewable energy sources such as wind and solar, CO2 conversion has the potential to sustainably recycle waste CO2 into valuable fuels or commodity chemicals. Nitrogen-containing ligands have been found to …
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Amorphous Ni-based Alloys as Alkaline Oxygen Evolution Electrocatalysts
The overall efficiency of many electrochemical conversion and storage technologies, such as water electrolysis and CO2 conversion, is hindered by sluggish oxygen evolution reaction (OER) kinetics. Amorphous alloys display enhanced OER kinetics and stability over their crystalline counterparts but …
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Molten Alkali Metal Borate/Carbonate Salts for High Temperature CO₂ Capture and Electrochemical Conversion
… been developed as a medium for electrochemical conversion of CO2 into value-added carbonaceous materials, including carbon nanotubes (CNTs). While electricity requirements are significant, the high economic value of CNTs make these processes potentially appealing both as a means of carbon …
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Electrochemical Routes for Capture and Utilization of CO2
The rapid rise in atmospheric CO2 concentrations presents a critical challenge to global climate stability, necessitating the development of energy-efficient, scalable, and economically viable carbon capture and utilization (CCUS) technologies. This thesis advances integrated electrochemical and …
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