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 11 of 11 for “"Single atom catalysts"”.
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Revealing Structural and Spin-state Dependent Reactivity of Single Atom Catalysts (SACs) with Systematically Improvable Computational Tools
Efficient catalysts are essential for advancing energy conversion and storage technologies, particularly for challenging reactions such as methane-to-methanol conversion and the oxygen reduction reaction (ORR) important for fuel cells. Single-atom catalysts (SACs), particularly doped graphitic …
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Structural and mechanistic identification of heterogeneous catalysts
… understanding and improving heterogeneous catalysts is essential to advance their development and enable more sustainable processes. Atomically disperse or single atom catalysts have shown particular promise for their ability to exceed nanoparticle catalysts with regards to activity, …
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Structural and Kinetic Study of Low-temperature Oxidation Reactions on Noble Metal Single Atoms and Subnanometer Clusters
Supported noble metal catalysts make the best utilization of noble metal atoms. Recent advances in nanotechnology have brought many attentions into the rational design of catalysts in the nanometer and subnanometer region. Recent studies showed that catalysts in the subnanometer regime could have …
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Catalysts Design and Reactor Engineering for Electrochemical CO2 Capture and Utilization
… In this dissertation, I focus on coupling catalysts design and cell engineering to develop CO2 capture technologies and CO2 electrochemical reduction methods. Our research aims to contribute to the mitigation of CO2 emissions, the capture of carbon as a valuable resource, and the promotion …
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Fundamental Understanding of Palladium-Based Catalysts: From Pyrene-Based COFs to Size-Controlled Bimetallic Nanostructures
The catalytic properties of single atoms (SAs) have attracted growing attention due to their unique electronic characteristics and their ability to maximize atomic efficiency compared to nanoparticles. As particle size decreases, the coordination environment around the metal atoms becomes …
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Hacia catalizadores monoatómicos de Pdsíntesis, caracterización avanzada mediante IA y mejora del comportamiento catalítico para la oxidación de CO
… de catalizadores atómicamente dispersos (Single-Atom Catalysts, SACs) basados en paladio soportado sobre óxido de magnesio (Pd/MgO), así como de sistemas ternarios Pd-CeOx/MgO. El objetivo principal ha sido estudiar la influencia de la localización del paladio en la estructura del óxido de …
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Structure Sensitivity of Alkane Hydrogenolysis on Ir/MgAl₂O₄ Catalysts
… In this project, a series of Ir/MgAl₂O₄ catalysts with different particle sizes that less than 2nm were utilized for ethane and n-butane hydrogenolysis reactions to study the structure sensitivity effect as well as the potential reaction mechanism. The results show that the activity on …
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Optimizing Iridium Single Atom and Small Cluster Catalysts for CO Oxidation
Single atom catalysis is a relatively new form of heterogeneous catalysis. While single atom catalysts probably are already used in a lot of catalysis, their identification and characterization has only recently become common place. As we now have the ability to synthesis relatively pure systems …
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Reconstruction of Rhodium Clusters During CO Oxidation and Consequences on The Reaction Mechanism
… and the global economy. Most heterogeneous catalysts in the chemical industry and laboratory consist of supported metal nanoparticles, clusters and isolated (single) atoms. Understanding structure sensitivity and identifying the active site or sites are crucially essential for designing …
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Structure Sensitivity in the Subnanometer Regime on Pt and Pd Supported Catalysts
Single-atom and cluster catalysts have been receiving significant interest due to not only their capability to approach the limit of atom efficiency but also to explore fundamentally unique properties. Supported Pt-group single atoms and clusters catalysts in the subnanometer size regime maximize …
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Atomic-level Insights Into Atomically Dispersed Metal Catalysts
Atomically dispersed metal catalysts have demonstrated promise in heterogeneous catalysis with both nearly 100% utilization efficiency of precious metals and high intrinsic activity of metal sites. As an emergent type of atomically dispersed metal catalysts, single-atom catalysts (SACs) have been …