L
Lawrence F. Allard
Researcher at Oak Ridge National Laboratory
Publications - 260
Citations - 18623
Lawrence F. Allard is an academic researcher from Oak Ridge National Laboratory. The author has contributed to research in topics: Catalysis & Scanning transmission electron microscopy. The author has an hindex of 57, co-authored 247 publications receiving 14809 citations. Previous affiliations of Lawrence F. Allard include University of Texas at Austin & University of Minnesota.
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Journal ArticleDOI
Single-atom catalysis of CO oxidation using Pt1/FeOx
Botao Qiao,Aiqin Wang,Xiaofeng Yang,Lawrence F. Allard,Zheng Jiang,Yi-Tao Cui,Jingyue Liu,Jingyue Liu,Jun Li,Tao Zhang +9 more
TL;DR: Density functional theory calculations show that the high catalytic activity correlates with the partially vacant 5d orbitals of the positively charged, high-valent Pt atoms, which help to reduce both the CO adsorption energy and the activation barriers for CO oxidation.
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Coordinatively Unsaturated Al3+ Centers as Binding Sites for Active Catalyst Phases of Platinum on γ-Al2O3
Ja Hun Kwak,Jiangzhi Hu,Donghei Mei,Cheol-Woo Yi,Do Heui Kim,Charles H. F. Peden,Lawrence F. Allard,János Szanyi +7 more
TL;DR: A combination of ultrahigh magnetic field, solid-state magic-angle spinning nuclear magnetic resonance spectroscopy, and high-angle annular dark-field scanning transmission electron microscopy coupled with density functional theory calculations is used to reveal the nature of anchoring sites of a catalytically active phase of platinum on the surface of a γ-Al2O3 catalyst support material.
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Catalytically active Au-O(OH)x- species stabilized by alkali ions on zeolites and mesoporous oxides
Ming Yang,Sha Li,Yuan Wang,Jeffrey A. Herron,Ye Xu,Lawrence F. Allard,Sungsik Lee,Jun Huang,Manos Mavrikakis,Maria Flytzani-Stephanopoulos +9 more
TL;DR: The addition of alkali ions (sodium or potassium) to gold on KLTL-zeolite and mesoporous MCM-41 silica stabilizes mononuclear gold in Au-O(OH)x-(Na or K) ensembles and paves the way for using earth-abundant supports to disperse and stabilize precious metal atoms with alkali additives for the WGS and potentially other fuel-processing reactions.
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CO Oxidation on Supported Single Pt Atoms: Experimental and ab Initio Density Functional Studies of CO Interaction with Pt Atom on θ-Al2O3(010) Surface
Melanie Moses-DeBusk,Mina Yoon,Lawrence F. Allard,David R. Mullins,Zili Wu,Xiaofan Yang,Gabriel M. Veith,G. Malcolm Stocks,Chaitanya K. Narula +8 more
TL;DR: The results clearly show that supported Pt single atoms are catalytically active and that this catalytic activity can occur without involving the substrate.
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Mild oxidation of methane to methanol or acetic acid on supported isolated rhodium catalysts
TL;DR: Mononuclear rhodium species, anchored on a zeolite or titanium dioxide support suspended in aqueous solution, catalyse the direct conversion of methane to methanol and acetic acid, using oxygen and carbon monoxide under mild conditions, and it is found that the two products form through independent pathways, which allows to tune the conversion.