Tags: catalysis

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  1. Reactivity and Mechanism of Catalytic Methane Conversion Over Ceria-Zirconia Supported Metal/Metal Oxide Catalysts

    10 Jun 2021 | Contributor(s):: Lyu, Yimeng

    Advisors: Carsten Sievers, Nian Liu, Eli Stavitski, Jake Soper, Ryan LivelyMethane, the major component of natural gas, is vastly available on Earth, but is not used effectively. Methane conversion using heterogeneous catalysts, such as CZ supported metal/metal oxide materials, provides a...

  2. Rational Synthesis of Multimetallic Nanocrystals for Plasmonics and Catalysis

    14 Jan 2020 | Contributor(s):: Ahn, Jae Wan

    Advisors: Dong Qin, Zhiqun Lin, Meilin Liu, Preet Singh, Joseph SadighiMultimetallic noble-metal nanocrystals have attracted considerable attention owing to their broad structure-property relationship for applications in plasmonics and catalysis. However, it remains a major challenge to...

  3. Ruthenium Nanocrystals With a Face-Centered Cubic Structure and Well-Controlled Facets

    21 Aug 2019 | Contributor(s):: Zhao, Ming

    Advisors: Younan Xia, Ronghu Wu, Angus P. Wilkinson, Seung Woo Lee, Z. John ZhangRuthenium (Ru) is an intriguing catalytic material for a variety of reactions. However, its extremely low abundance in the earth crust and ever-increasing price have created a barrier to the large-scale use of this...

  4. Bimetallic Nanocrystals for Applications in Plasmonics and Catalysis

    22 Jan 2018 | Contributor(s):: Sun, Xiaojun

    Advisors: Dong Qin, Meilin Liu, Vladimir Tsukruk, Zhiqun Lin, John ZhangBimetallic nanocrystals have received growing interest owing to their diversified properties and promising applications. Seeded growth serves as a powerful route to bimetallic nanocrystals but its capability is limited by...

  5. Kinetic and Structural Evolution of Functional Peptide Assembling Networks

    17 Aug 2017 | Contributor(s):: Hsieh, Ming-Chien

    Advisors: Martha A. Grover, David G. Lynn, Julie A. Champion, Peter J. Ludovice, Nicholas V. HudThe peptide assembly mechanism is important for the development of both functional biomaterials and clinical therapies. Although the assembly structures and assembling pathways have been studied for...

  6. Energy Transfer in Nanostructured Systems

    17 Aug 2017 | Contributor(s):: O'Neil, Daniel Saldinger

    Advisors: Mostafa El-Sayed, Ken Brown, Robert Dickson, Seth Marder, Vladimir V. TsukrukThis dissertation contains a number of projects involving the experimental and theoretical investigation of energy transfer within nanostructured systems. Chapter 1 begins with an overview of pump-probe...

  7. Optimizing Catalyst Reactivity, Separation, and Recycle in Processes Involving the Palladium-Catalyzed Suzuki Coupling of Heteroaromatic Compounds

    17 Aug 2017 | Contributor(s):: Senter, James C.

    Advisors: Charles Liotta, Stefan France, Ryan Lively, Carsten Sievers, Jason FiskSuzuki coupling is a transition-metal catalyzed reaction of an aryl halide and a boronic acid that forms carbon-carbon bonds. Due to its versatility, the Suzuki reaction has emerged as an important reaction in...

  8. Near Surface Evaluation of Structural, Electronic and Chemical Properties of Templated PT Monolayers

    22 Aug 2016 | Contributor(s):: Vitale, Adam J..

    Advisors: Faisal Alamgir, Eric Vogel, Meilin Liu, Preet Singh, Krista WaltonPlatinum group metals are the choice catalysts for a wide variety of catalytic reactions, including oxygen reduction. The focus of this study is to explore the dimensional aspect of both electronic and structure-driven...

  9. Rational Synthesis of Novel Reforming Catalysts

    27 May 2016 | Contributor(s):: Ewbank, Jessica Lee

    Advisors: Carsten Sievers, Christopher Jones, Pradeep Agrawal, Yulin Deng, Preet SinghBiomass gasification offers the chance to produce carbon neutral, renewable fuels. One of the main problems facing the commercialization of biomass gasification technology is the presence of large quantities of...

  10. Geometries of adsorbed intermediates for ethanol synthesis on Rh(111) and Rh(211)

    16 May 2016 | Contributor(s):: Andrew James Medford

    Minimized geometries for adsorbed intermediates for syngas to ethanol conversion over Rh(111) and Rh(211) at low- and high-CO coverage. Calculations were done using Quantum Espresso with the BEEF-vdW exchange-correlation functional. More details are available...

  11. Andrew James Medford

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  12. Stability of Acid-Modified Activated Carbons in Hot Liquid Water and Their Application to Biomass Hydrolysis Reactions

    01 Jan 2013 | Contributor(s):: Van Pelt, Adam Henderson

    Advisors: Carsten Sievers, Carson Meredith, Matthew J. RealffIn this work, the stability of acid-modified activated carbons is assessed in the typical biomass conversion reaction environment of 200 degC, 17 bar water. Activated carbons were modified with a variety of common liquid and gas phase...

  13. Designing Immobilized Catalysts for Chemical Transformations: New Platforms to Tune the Accessibility of Active Sites

    02 Jul 2012 | Contributor(s):: Long, Wei

    Advisors: Christopher Jones, Edward Kent Barefield, William Koros, Charles Liotta, John ZhangChemical catalysts are divided into two traditional categories: homogeneous and heterogeneous catalysts. Although homogeneous (molecular) catalysts tend to have high activity and selectivity, their wide...