Search Results - "Bert, D"

CO Oxidation Kinetics over Au/TiO2 and Au/Al2O3 Catalysts: Evidence for a Common Water-Assisted Mechanism by Saavedra, Johnny, Pursell, Christopher J, Chandler, Bert D

“…The mechanism of CO oxidation over supported gold catalysts has long been debated, with two prevailing mechanisms dominating the discussion: a water-assisted…”
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The critical role of water at the gold-titania interface in catalytic CO oxidation by Saavedra, Johnny, Doan, Hieu A., Pursell, Christopher J., Grabow, Lars C., Chandler, Bert D.

“…We provide direct evidence of a water-mediated reaction mechanism for room-temperature CO oxidation over Au/TiO₂ catalysts. A hydrogen/deuterium kinetic…”
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Surface Hydroxyl Chemistry of Titania- and Alumina-Based Supports: Quantitative Titration and Temperature Dependence of Surface Brønsted Acid–Base Parameters by Yun, Tae Yong, Chandler, Bert D.

“…Surface hydroxyl groups on metal oxides play significant roles in catalyst synthesis and catalytic reactions. Despite the importance of surface hydroxyls in…”
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Controlling activity and selectivity using water in the Au-catalysed preferential oxidation of CO in H2 by Saavedra, Johnny, Whittaker, Todd, Chen, Zhifeng, Pursell, Christopher J., Rioux, Robert M., Chandler, Bert D.

“…Industrial hydrogen production through methane steam reforming exceeds 50 million tons annually and accounts for 2–5% of global energy consumption. The…”
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Evaluating differences in the active-site electronics of supported Au nanoparticle catalysts using Hammett and DFT studies by Kumar, Gaurav, Tibbitts, Luke, Newell, Jaclyn, Panthi, Basu, Mukhopadhyay, Ahana, Rioux, Robert M., Pursell, Christopher J., Janik, Michael, Chandler, Bert D.

“…Supported metal catalysts, which are composed of metal nanoparticles dispersed on metal oxides or other high-surface-area materials, are ubiquitous in…”
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H 2 Oxidation over Supported Au Nanoparticle Catalysts: Evidence for Heterolytic H 2 Activation at the Metal-Support Interface by Whittaker, Todd, Kumar, K B Sravan, Peterson, Christine, Pollock, Meagan N, Grabow, Lars C, Chandler, Bert D

“…Water adsorbed at the metal-support interface (MSI) plays an important role in multiple reactions. Due to its importance in CO preferential oxidation (PrOx),…”
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Water Poisons H2 Activation at the Au–TiO2 Interface by Slowing Proton and Electron Transfer between Au and Titania by Sravan Kumar, K. B, Whittaker, Todd N, Peterson, Christine, Grabow, Lars C, Chandler, Bert D

“…Understanding the dynamic changes at the active site during catalysis is a fundamental challenge that promises to improve catalytic properties. While…”
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Combining Benzyl Alcohol Oxidation Saturation Kinetics and Hammett Studies as Mechanistic Tools for Examining Supported Metal Catalysts by Mahdavi-Shakib, Akbar, Sempel, Janine, Babb, Lauren, Oza, Aisha, Hoffman, Maya, Whittaker, Todd N, Chandler, Bert D, Austin, Rachel Narehood

“…Understanding and quantifying how the active sites in supported metal catalysts can be modified are critical for rationally designing catalysts. This problem…”
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CO oxidation over Au/TiO2 catalyst: Pretreatment effects, catalyst deactivation, and carbonates production by Saavedra, Johnny, Powell, Camilah, Panthi, Basu, Pursell, Christopher J., Chandler, Bert D.

“…For Au/TiO2 catalysts, pretreatment conditions were found to have a profound effect on the in situ production and/or stability of surface carbonates, which…”
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Hydrogen Adsorption at the Au/TiO2 Interface: Quantitative Determination and Spectroscopic Signature of the Reactive Interface Hydroxyl Groups at the Active Site by Mahdavi-Shakib, Akbar, Rich, Lauren C, Whittaker, Todd N, Chandler, Bert D

“…Infrared spectroscopy shows that H2 adsorbs heterolytically at the metal–support interface (MSI) of Au/TiO2 catalysts. This generates stable protonated MSI…”
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Upside-Down Adsorption: The Counterintuitive Influences of Surface Entropy and Surface Hydroxyl Density on Hydrogen Spillover by Hart, Kelle D., Hollobaugh, Margaret J., Battiste, Audrey M., Yun, Tae Yong, Abraham, Angela Pathickal, Hamidizirasefi, Mohammad, Loscher, Ian M., Chandler, Bert D.

“…Although hydrogen spillover is often invoked to explain anomalies in catalysis, spillover remains a poorly understood phenomenon. Hydrogen spillover (H*) is…”
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Effects of Pd on Catalysis by Au: CO Adsorption, CO Oxidation, and Cyclohexene Hydrogenation by Supported Au and Pd–Au Catalysts by Ward, Timothy, Delannoy, Laurent, Hahn, Ruth, Kendell, Shane, Pursell, Christopher J, Louis, Catherine, Chandler, Bert D

“…Incorporating small amounts of Pd into supported Au catalysts has been shown to have beneficial effects on selective hydrogenation reactions, particularly…”
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Kinetics of H2 Adsorption at the Metal–Support Interface of Au/TiO2 Catalysts Probed by Broad Background IR Absorbance by Mahdavi‐Shakib, Akbar, Kumar, K. B. Sravan, Whittaker, Todd N., Xie, Tianze, Grabow, Lars C., Rioux, Robert M., Chandler, Bert D.

“…H2 adsorption on Au catalysts is weak and reversible, making it difficult to quantitatively study. We demonstrate H2 adsorption on Au/TiO2 catalysts results in…”
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Synthesis and Characterization of Dendrimer Templated Supported Bimetallic Pt−Au Nanoparticles by Lang, Huifang, Maldonado, Stephen, Stevenson, Keith J, Chandler, Bert D

“…Bimetallic dendrimer-stabilized nanoparticles (DSNs) were used to prepare supported Pt−Au catalysts within the bulk miscibility gap for this binary system…”
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Synthetic Control of Excited-State Properties in Cyclometalated Ir(III) Complexes Using Ancillary Ligands by Li, Jian, Djurovich, Peter I, Alleyne, Bert D, Yousufuddin, Muhammed, Ho, Nam N, Thomas, J. Christopher, Peters, Jonas C, Bau, Robert, Thompson, Mark E

“…The synthesis and photophysical characterization of a series of (N,C2‘-(2-para-tolylpyridyl))2Ir(LL‘) [(tpy)2Ir(LL‘)] (LL‘ = 2,4-pentanedionato (acac),…”
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Synthesis and Characterization of Facial and Meridional Tris-cyclometalated Iridium(III) Complexes by Tamayo, Arnold B, Alleyne, Bert D, Djurovich, Peter I, Lamansky, Sergey, Tsyba, Irina, Ho, Nam N, Bau, Robert, Thompson, Mark E

“…The synthesis, structures, electrochemistry, and photophysics of a series of facial (fac) and meridional (mer) tris-cyclometalated Ir(III) complexes are…”
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Water Influences the Activity and Selectivity of Ceria-Supported Gold Catalysts for Oxidative Dehydrogenation and Esterification of Ethanol by Mullen, Gregory M, Evans, Edward J, Sabzevari, Iliya, Long, Brittany E, Alhazmi, Khalid, Chandler, Bert D, Mullins, C. Buddie

“…In this study, we show that water influences the activity and selectivity of a ceria-supported gold catalyst for the oxidative dehydrogenation and…”
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CO Oxidation Kinetics over Au/TiO 2 and Au/Al 2 O 3 Catalysts: Evidence for a Common Water-Assisted Mechanism by Saavedra, Johnny, Pursell, Christopher J, Chandler, Bert D

“…The mechanism of CO oxidation over supported gold catalysts has long been debated, with two prevailing mechanisms dominating the discussion: a water-assisted…”
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Water Poisons H 2 Activation at the Au-TiO 2 Interface by Slowing Proton and Electron Transfer between Au and Titania by Sravan Kumar, K B, Whittaker, Todd N, Peterson, Christine, Grabow, Lars C, Chandler, Bert D

“…Understanding the dynamic changes at the active site during catalysis is a fundamental challenge that promises to improve catalytic properties. While…”
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Supported Ni–Au Colloid Precursors for Active, Selective, and Stable Alkyne Partial Hydrogenation Catalysts by Bruno, James E, Dwarica, Nicolas S, Whittaker, Todd N, Hand, Emily R, Guzman, Clemente S, Dasgupta, Anish, Chen, Zhifeng, Rioux, Robert M, Chandler, Bert D

“…Bimetallic NiAu catalysts have garnered broad interest for a variety of reactions including automotive emissions, selective hydrogenation, selective oxidation,…”
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