Search Results - "Allard, F."

Mild oxidation of methane to methanol or acetic acid on supported isolated rhodium catalysts by Shan, Junjun, Li, Mengwei, Allard, Lawrence F., Lee, Sungsik, Flytzani-Stephanopoulos, Maria

“…Single-site isolated rhodium species anchored on zeolites or titanium dioxide are shown to catalyse the direct conversion of methane to methanol and acetic…”
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Models of very-low-mass stars, brown dwarfs and exoplanets by Allard, F., Homeier, D., Freytag, B.

“…Within the next few years, GAIA and several instruments aiming to image extrasolar planets will be ready. In parallel, low-mass planets are being sought around…”
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A New Generation of Cool White Dwarf Atmosphere Models. I. Theoretical Framework and Applications to DZ Stars by Blouin, S., Dufour, P., Allard, N. F.

“…The photospheres of the coolest helium-atmosphere white dwarfs are characterized by fluidlike densities. Under those conditions, standard approximations used…”
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Catalytically active Au-O(OH)x-species stabilized by alkali ions on zeolites and mesoporous oxides by Yang, Ming, Li, Sha, Wang, Yuan, Herron, Jeffrey A., Xu, Ye, Allard, Lawrence F., Lee, Sungsik, Huang, Jun, Mavrikakis, Manos, Flytzani-Stephanopoulos, Maria

“…We report that the addition of alkali ions (sodium or potassium) to gold on KLTL-zeolite and mesoporous MCM-41 silica stabilizes mononuclear gold in…”
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A Common Single-Site Pt(II)–O(OH) x – Species Stabilized by Sodium on “Active” and “Inert” Supports Catalyzes the Water-Gas Shift Reaction by Yang, Ming, Liu, Jilei, Lee, Sungsik, Zugic, Branko, Huang, Jun, Allard, Lawrence F, Flytzani-Stephanopoulos, Maria

“…While it has long been known that different types of support oxides have different capabilities to anchor metals and thus tailor the catalytic behavior, it is…”
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Single-atom catalysis of CO oxidation using Pt1/FeOx by Qiao, Botao, Wang, Aiqin, Yang, Xiaofeng, Allard, Lawrence F., Jiang, Zheng, Cui, Yitao, Liu, Jingyue, Li, Jun, Zhang, Tao

“…Platinum-based heterogeneous catalysts are critical to many important commercial chemical processes, but their efficiency is extremely low on a per metal atom…”
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Analysis of Helium-rich White Dwarfs Polluted by Heavy Elements in the Gaia Era by Coutu, S., Dufour, P., Bergeron, P., Blouin, S., Loranger, E., Allard, N. F., Dunlap, B. H.

“…We present an analysis of 1023 DBZ/DZ(A) and 319 DQ white dwarf stars taken from the Montreal White Dwarf Database. This represents a significant increase over…”
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Selective hydrogenation of 1,3-butadiene on platinum–copper alloys at the single-atom limit by Lucci, Felicia R., Liu, Jilei, Marcinkowski, Matthew D., Yang, Ming, Allard, Lawrence F., Flytzani-Stephanopoulos, Maria, Sykes, E. Charles H.

“…Platinum is ubiquitous in the production sectors of chemicals and fuels; however, its scarcity in nature and high price will limit future proliferation of…”
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Surpassing the single-atom catalytic activity limit through paired Pt-O-Pt ensemble built from isolated Pt1 atoms by Wang, Hui, Liu, Jin-Xun, Allard, Lawrence F., Lee, Sungsik, Liu, Jilei, Li, Hang, Wang, Jianqiang, Wang, Jun, Oh, Se H., Li, Wei, Flytzani-Stephanopoulos, Maria, Shen, Meiqing, Goldsmith, Bryan R., Yang, Ming

“…Despite the maximized metal dispersion offered by single-atom catalysts, further improvement of intrinsic activity can be hindered by the lack of neighboring…”
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Atomic Structure of a Lithium-Rich Layered Oxide Material for Lithium-Ion Batteries: Evidence of a Solid Solution by Jarvis, Karalee A, Deng, Zengqiang, Allard, Lawrence F, Manthiram, Arumugam, Ferreira, Paulo J

“…Li[Li0.2Ni0.2Mn0.6]O2, which is a cathode material for Li-ion batteries with enhanced capacity, has been examined, for the first time, with a combination of…”
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Photometric characterization of exoplanets using angular and spectral differential imaging by Vigan, A., Moutou, C., Langlois, M., Allard, F., Boccaletti, A., Carbillet, M., Mouillet, D., Smith, I.

“…In recent years, there has been intensive research into the direct detection of exoplanets. Data obtained in the future with high-contrast imaging instruments,…”
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A global cloud map of the nearest known brown dwarf by Crossfield, I. J. M., Biller, B., Schlieder, J. E., Deacon, N. R., Bonnefoy, M., Homeier, D., Allard, F., Buenzli, E., Henning, Th, Brandner, W., Goldman, B., Kopytova, T.

“…A map of the surface of a brown dwarf reveals features that suggest patchy clouds, providing the mechanism for the dispersal of atmospheric dust as brown…”
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Single-site Pt/La-Al2O3 stabilized by barium as an active and stable catalyst in purifying CO and C3H6 emissions by Wang, Hui, Dong, Jinshi, Allard, Lawrence F., Lee, Sungsik, Oh, Se, Wang, Jun, Li, Wei, Shen, Meiqing, Yang, Ming

“…[Display omitted] •The single-site Pt1(II)-Ox- species is the catalytic site for the CO and C3H6 oxidation reactions on La-Al2O3.•Single-atom Pt sites don't…”
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Kinetic and mechanistic study of bimetallic Pt-Pd/Al2O3 catalysts for CO and C3H6 oxidation by Hazlett, Melanie J., Moses-Debusk, Melanie, Parks, James E., Allard, Lawrence F., Epling, William S.

“…[Display omitted] •CO and C3H6 co-oxidation was characterized.•CO inhibits Pt and Pt-rich catalysts more strongly than Pd or Pd-rich.•Carbonates as an…”
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High-contrast imaging of Sirius A with VLT/SPHERE: looking for giant planets down to one astronomical unit by Vigan, A., Gry, C., Salter, G., Mesa, D., Homeier, D., Moutou, C., Allard, F.

“…Sirius has always attracted a lot of scientific interest, especially after the discovery of a companion white dwarf at the end of the 19th century. Very early…”
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A New Generation of Cool White Dwarf Atmosphere Models. II. A DZ Star with Collision-induced Absorption by Blouin, S., Dufour, P., Allard, N. F., Kilic, M.

“…In the first paper of this series, we presented our upgraded cool white dwarf atmosphere code. In this second paper, we use our new models to analyze SDSS…”
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A clinical prediction rule for ambulation outcomes after traumatic spinal cord injury: a longitudinal cohort study by van Middendorp, Joost J, Dr, Hosman, Allard JF, MD, Donders, A Rogier T, PhD, Pouw, Martin H, MD, Ditunno, John F, Prof, Curt, Armin, Prof, Geurts, Alexander CH, Prof, Van de Meent, Hendrik, MD

“…Summary Background Traumatic spinal cord injury is a serious disorder in which early prediction of ambulation is important to counsel patients and to plan…”
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Detection and characterization of two VLM binaries: LP 1033-31 and LP 877-72 by Karmakar, Subhajeet, Rajpurohit, A S, Allard, F, Homeier, D

“…ABSTRACT Using the high-resolution near-infrared adaptive optics imaging from the NaCo instrument at the Very Large Telescope, we report the discovery of a new…”
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Surface Composition Tuning of Au–Pt Bimetallic Nanoparticles for Enhanced Carbon Monoxide and Methanol Electro-oxidation by Suntivich, Jin, Xu, Zhichuan, Carlton, Christopher E, Kim, Junhyung, Han, Binghong, Lee, Seung Woo, Bonnet, Nicéphore, Marzari, Nicola, Allard, Lawrence F, Gasteiger, Hubert A, Hamad-Schifferli, Kimberly, Shao-Horn, Yang

“…The ability to direct bimetallic nanoparticles to express desirable surface composition is a crucial step toward effective heterogeneous catalysis, sensing,…”
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Diphosphine-Protected Au22 Nanoclusters on Oxide Supports Are Active for Gas-Phase Catalysis without Ligand Removal by Wu, Zili, Hu, Guoxiang, Jiang, De-en, Mullins, David R, Zhang, Qian-Fan, Allard, Lawrence F, Wang, Lai-Sheng, Overbury, Steven H

“…Investigation of atomically precise Au nanoclusters provides a route to understand the roles of coordination, size, and ligand effects on Au catalysis. Herein,…”
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