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 16 of 16 for “"CO2 Hydrogenation"”.
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Iron-Based Alloys as Catalysts for CO2 Hydrogenation
Use of CO2 as a chemical feedstock in a wide range of applications has been postulated as a method to reduce its concentrations in the atmosphere, in an effort to combat climate change. An especially attractive use of CO2 is its hydrogenation to hydrocarbon fuels. If coupled with a source of …
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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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Synthesis and In-Depth Characterization of Fe-Based Catalysts and Zeolites for Efficient CO2 Hydrogenation to Hydrocarbons
L'abstract è presente nell'allegato / the abstract is in the attachment
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CO AND CO2 HYDROGENATION BY FISCHER TROPSCH SYNTHESIS PROMOTED WITH IRON BASED HETEROGENEOUS CATALYSIS: DATA COLLECTION AND PROCESS DESIGN
The reduction of CO2 emissions into the atmosphere has become a global priority, given the crucial role of this greenhouse gas in climate change. A promising approach to mitigate CO2 is its conversion into fuels and chemicals through processes such as Fischer–Tropsch (FT) synthesis. Traditionally, …
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Design and Synthesis of Metal Nanostructures for Plasmon-Enhanced Catalysis
… in two model reactions, carbon dioxide (CO2) hydrogenation and ammonia (NH3) synthesis.</p><p>Chapter 2 describes the development of slow-injection polyol methods to synthesize monodispersed Rh nanocubes with tunable size and resonant energy. The wide size tunability of slow-injection …
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Optimizing Adsorption Energies of Reaction Products and Intermediates on Metal/Metal Oxide Catalysts to Achieve High Activity and Tunable Selectivity in Solid-Gas Phase Reactions
<p>The solid-gas phase reactions, such as CO2 hydrogenation, the Fischer-Tropsh process, CO oxidation, and ammonia synthesis are one of the heterogenous catalytic reactions which have been emerged as a critical process in chemical and energy industries for a sustainable future. It needs a catalyst …
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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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Elemental and structural behaviors of bimetallic nanoparticles under reactive environments and its implication in catalyst design, processing, and performance
… model systems are metal-on-metal Rh-on-Pd for CO2 hydrogenation and Cu@CuAg nanocatalyst for propylene epoxidation. Environmental transmission electron microscopy was utilized in most of the projects mentioned above and provided critical information with high spatial resolution in realtime. The …
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Simultaneous production of methanol and dimethylether from synthesis gas
… process that involves synthesis of methanol by hydrogenation of CO/CO2 over a copper based catalyst and subsequent dehydration of methanol to DME over an acidic catalyst. Alternatively, DME can be produced in an one-step (direct) process using a hybrid (bifunctional) catalyst system that permits …
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Catalytic Conversion of Carbon-Containing Compounds into Valuable Chemicals and Fuels
… Metathesis of ethene and 2-butene; 2) Methane dehydrogenation and carbon dioxide hydrogenation. We developed three computational methodologies to study these processes across a range of length and time scales. First, we investigated how electronic structure affects the properties and reactivity …
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Application of Molybdenum Carbide Catalysts for the CO2-assisted Oxidative Dehydrogenation of Ethane
… is at present mainly met via catalytic/thermal dehydrogenation of alkanes at temperatures of up to 900 °C. Under these severe process conditions, competing side reactions and catalyst deactivation via coking are the major challenges. Co-feeding an oxidant significantly decreases the reaction …
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Development of novel catalysts for e-fuel production
L'abstract è presente nell'allegato / the abstract is in the attachment
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Heterogeneous Catalysis for CO2 Valorization: Catalyst Studies and Infrared Spectroscopy
L'abstract è presente nell'allegato / the abstract is in the attachment
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Ανάπτυξη λεπτών υμενίων για χρήση στην ηλεκτροχημική ενίσχυση της κατάλυσης
… (12000 h-1). Τέλος, μελετήθηκε η αναγωγή του CO2 από Η2 σε ηλεκτρόδια Cu/TiO2/YSZ χρησιμοποιώντας τόσο έναν αντιδραστήρα μονής πελέτας όσο και έναν μονολιθικό ηλεκτροχημικά ενισχυόμενο αντιδραστήρα υπό ατμοσφαιρική πίεση. Χρησιμοποιώντας τον αντιδραστήρα μονής πελέτας βρέθηκε ότι η αντίδραση …