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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 30 for “"Carbon dioxide reduction"”.
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Trimetallic gold silver copper nanorods for carbon dioxide reduction
AuAgCu trimetallic nanorods of varying sizes and elemental ratios were synthesized using a seed-mediated growth procedure. These three metals were of interest due to their respective metal nanorods’ tunable plasmonic and catalytic properties especially in photocatalysis. The synthesis was adapted …
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The net environmental effects of carbon dioxide reduction policies
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Electrochemical Carbon Dioxide Reduction for Renewable Carbonaceous Fuels and Chemicals
Electrochemical CO2 reduction reaction (ECO2RR) powered by renewable electricity possesses the potential to store intermittent energy in chemical bonds while producing sustainable chemicals and fuels. Unfortunately, it is hard to achieve low overpotential, high selectivity, and activity …
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Ab Initio study of dynamically tunable catalysis for carbon dioxide reduction
… an attractive alternative to expensive physical carbon sequestration methods. However, this approach is challenging because current chemical conversion methods employ high temperatures or pressures, thereby increasing cost and potentially leading to net carbon positive processes. Our work …
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Leveraging the Properties of Aprotic Solvents Towards Efficient Electrocatalytic Carbon Dioxide Reduction
Electrochemical carbon dioxide reduction has been studied as a method to sustainably produce valorized hydrocarbons. However, the reaction faces two challenges: low reaction selectivity towards value added products, and the deleterious reaction of carbon dioxide with the electrolyte to form soluble …
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Pyridine Modified Gold Nanoparticles for Electrocatalytic Carbon Dioxide Reduction and Methanol Oxidation Reactions
… of fossil fuels produces an enormous amount of carbon dioxide, causing a series of environmental problems such as glacial melting, food production reduction, and sea-level rise. Because it can potentially help address the global energy challenges and environmental issues from fossil fuels, CO2 …
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Air quality improvements and carbon dioxide reduction policies : a method for assessing secondary benefits
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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The Structure of The Carbon Dioxide Reduction Factor, a Novel Carbon Carrier in Methanobacterium Thermoautotrophicum
Made available in DSpace on 2014-12-16T06:12:51Z (GMT). No. of bitstreams: 1 8409984.pdf: 3721066 bytes, checksum: eb26f8d46b1910adac3f827266c16bb5 (MD5) Previous issue date: 1983
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Earth-Abundant Metal Complexes Binding N-Heterocyclic Carbene-Based Ligands for the Photocatalytic Carbon Dioxide Reduction Reaction
… of relying on fossil fuels. The light-driven reduction of CO2 to formate and CO is a practical approach for generating fuels from a greenhouse gas, as formate is directly usable in fuel cells, while CO could be used to produce diesel fuels via the Fischer-Tropsch process. However, a robust and …
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Electronic Effects in Multidentate Pyridinol and N-Heterocyclic Carbene Based Ligands for Transition Metal Catalyzed Carbon Dioxide Reduction
… high catalytic efficiency and robustness towards carbon dioxide (CO2) reduction is of paramount importance. A full understanding of the requirements for creating a catalyst of this type is a missing gap in the knowledge base which prevents progress in synthesizing solar fuels. Our research …
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Robust Nickel Catalysts Supported By Biaryl-Bridged Pyridyl-N-Heterocyclic Carbenes For Carbon Dioxide Reduction To Value-Added Products
Carbon dioxide is a greenhouse gas, but also represents a readily accessible 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 …
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Interrogating electrocatalytic mechanisms and developing nano-porous catalysts for energy conversion reactions: I. Oxygen evolution reaction, and II. Carbon dioxide reduction reaction
… the oxygen evolution reaction (OER) and carbon dioxide reduction reaction (CRR). First, I examined the oxygen evolution reaction in basic electrolytes using in situ electrochemical surface stress measurements. Second, I developed a new electrolyte additive-controlled electrodeposition …
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Engineering gas diffusion electrodes for electrochemical carbon dioxide upgrading
Electrochemical carbon dioxide reduction (CO2R) is increasingly recognized as a viable technology for the generation of chemicals using carbon dioxide (CO₂) recovered from industrial exhaust streams or directly captured from air. If powered with low-carbon electricity, CO2R processes have the …
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NOVEL TYPES OF TWO-DIMENSIONAL METAL CARBIDES AND THEIR APPLICATIONS: FIRST PRINCIPLES STUDIES
… chemically active metal species into inert 2D carbon materials, such as graphene, graphyne, and graphdiyne, is widely adopted to design new functional structures. However, the doping-induced configurations generally suffer from poor stability, highly disordered lattices, and low metal loading …
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Investigation of Distribution and Transport of CO2 in Polyimine/MCM-41 Hybrid System: Modeling and Simulation Approach
… Air Capture (DAC) technology for atmospheric carbon dioxide reduction by employing novel polyimine materials. From a computational perspective, The study investigates traditional poly(ethylenimine) (PEI) sorbents and novel poly(propylenimine) (PPI) and their derivatives, addressing the …
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ELECTROCATALYTIC PROCESSES FOR ENERGY STORAGE & CONVERSION
… electrochemical devices such as water splitting, carbon dioxide electroreduction and, solar energy converters. These transition metal chalcogenides exhibit high electrochemical tunability, abundant active sites and superior electrical conductivity. Hence, they have been actively explored for …
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Adsorption and electrostatic potentials at the electrochemical interface
… Carlo model (MC) is applied to a very complex carbon dioxide reduction system to study competitive adsorption. This application of Monte Carlo simulations demonstrates the challenges of extracting meaningful parameters from empirically fitting MC simulations to isotherms derived from …
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Coordination chemistry of unusual oxidation states of nickel and palladium relevant to homogeneous catalysis
… reactions – particularly the proton and carbon dioxide reduction reactions. Key contributions include the development of a small-molecule mimic of the redox-active Ni center of [NiFe] hydrogenase. The small-molecule model was shown to switch between NiI and NiIII via a C-H activation …
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Engineering Biological Materials for Carbon Capture and the Electrochemical Reduction of Carbon Dioxide to Light Hydrocarbons
Decarbonization of the global economy will require the identification of substitute carbon sources for the production of fuels, plastics, textiles, pharmaceuticals, and other products that are derived from fossil carbon. The gigaton scale of carbon dioxide emissions necessitates the development of …
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