Výsledky vyhledávání - "Alexey Boubnov"

Akademický článek

Directing reaction pathways via in situ control of active site geometries in PdAu single-atom alloy catalysts

Autor: Mengyao Ouyang, Konstantinos G. Papanikolaou, Alexey Boubnov, Adam S. Hoffman, Georgios Giannakakis, Simon R. Bare, Michail Stamatakis, Maria Flytzani-Stephanopoulos, E. Charles H. Sykes

Publikováno v: Nature Communications, Vol 12, Iss 1, Pp 1-11 (2021)

Single-atom alloys are promising catalysts for a number of different reactions. Here, the authors demonstrate that carbon monoxide can be used to transition a PdAu catalyst between a single atom and a cluster phase which exhibit distinct selectivitie

Externí odkaz: https://doaj.org/article/ae7b3a5240b4424cac0e0136eb05bd9c

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Akademický článek

Operando high-pressure investigation of size-controlled CuZn catalysts for the methanol synthesis reaction

Autor: Núria J. Divins, David Kordus, Janis Timoshenko, Ilya Sinev, Ioannis Zegkinoglou, Arno Bergmann, See Wee Chee, Simon Widrinna, Osman Karslıoğlu, Hemma Mistry, Mauricio Lopez Luna, Jian Qiang Zhong, Adam S. Hoffman, Alexey Boubnov, J. Anibal Boscoboinik, Marc Heggen, Rafal E. Dunin-Borkowski, Simon R. Bare, Beatriz Roldan Cuenya

Publikováno v: Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021)

The nature of the active species over Cu/ZnO catalysts for methanol synthesis remains elusive. Here, the authors shed light on the evolution of the nanoparticle/support interface and correlate its structural and chemical transformations with changes

Externí odkaz: https://doaj.org/article/205a8f6d445b46d4a1beb179b9f7558e

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CO oxidation on MgAl2O4 supported Irn: activation of lattice oxygen in the subnanometer regime and emergence of nuclearity-activity volcano

Autor: Yubing Lu, Coogan Thompson, Chun-Te Kuo, Xiwen Zhang, Adam S. Hoffman, Alexey Boubnov, Simon R. Bare, Libor Kovarik, Hongliang Xin, Ayman M. Karim

Publikováno v: Journal of Materials Chemistry A. 10:4266-4278

Ir subnanometer clusters activate surface oxygen on a traditionally non-reducible MgAl2O4 support which leads to a more active two-site mechanism during low-temperature CO oxidation.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::00979f5ed77d7d633339fa7cf57107ad
https://doi.org/10.1039/d1ta09740g

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Heating up the OER: Investigation of IrO 2 OER Catalysts as Function of Potential and Temperature**

Autor: Steffen Czioska, Konrad Ehelebe, Janis Geppert, Daniel Escalera‐López, Alexey Boubnov, Erisa Saraçi, Britta Mayerhöfer, Ulrike Krewer, Serhiy Cherevko, Jan‐Dierk Grunwaldt

Publikováno v: ChemElectroChem. 9

Despite intensive investigations for unravelling the water splitting reaction, the catalyst behavior during the oxygen evolution reaction (OER) is still not fully understood. This is especially true under more demanding conditions like high potential

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84775f8ba22f5d5e869228e68fdb6a55
https://doi.org/10.1002/celc.202200514

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Increased Ir–Ir Interaction in Iridium Oxide during the Oxygen Evolution Reaction at High Potentials Probed by Operando Spectroscopy

Autor: Philipp Röse, Vitaly Alexandrov, Janis Geppert, Serhiy Cherevko, Alexandra Zagalskaya, Ulrike Krewer, Steffen Czioska, Erisa Saraçi, Daniel Escalera-López, Jan-Dierk Grunwaldt, Alexey Boubnov

Publikováno v: ACS catalysis 11(15), 10043-10057 (2021). doi:10.1021/acscatal.1c02074
ACS catalysis, 11 (15), 10043–10057

The structure of IrO$_{2}$ during the oxygen evolution reaction (OER) was studied by operando X-ray absorption spectroscopy (XAS) at the Ir L$_{3}$-edge to gain insight into the processes that occur during the electrocatalytic reaction at the anode d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3169c78f0be90b8294a564c5cecba8d7
https://doi.org/10.1021/acscatal.1c02074

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Directing reaction pathways via in situ control of active site geometries in PdAu single-atom alloy catalysts

Autor: Maria Flytzani-Stephanopoulos, Michail Stamatakis, E. Charles H. Sykes, Georgios Giannakakis, Adam S. Hoffman, Mengyao Ouyang, Konstantinos G. Papanikolaou, Simon R. Bare, Alexey Boubnov

Publikováno v: Nature Communications, Vol 12, Iss 1, Pp 1-11 (2021)
Nature Communications

The atomic scale structure of the active sites in heterogeneous catalysts is central to their reactivity and selectivity. Therefore, understanding active site stability and evolution under different reaction conditions is key to the design of efficie

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::800726e879e60c63df7394f8b0e71dd3
https://doaj.org/article/ae7b3a5240b4424cac0e0136eb05bd9c

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