The Role of Oxides in Catalytic CO Oxidation over Rhodium and Palladium

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The Role of Oxides in Catalytic CO Oxidation over Rhodium and Palladium. / Gustafson, Johan; Balmes, Olivier; Zhang, Chu; Shipilin, Mikhail; Schaefer, Andreas; Hagman, Benjamin; Merte, Lindsay R.; Martin, Natalia M.; Carlsson, Per Anders; Jankowski, Maciej; Crumlin, Ethan J.; Lundgren, Edvin.

I: ACS Catalysis, Vol. 8, Nr. 5, 04.05.2018, s. 4438-4445.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Harvard

Gustafson, J, Balmes, O, Zhang, C, Shipilin, M, Schaefer, A, Hagman, B, Merte, LR, Martin, NM, Carlsson, PA, Jankowski, M, Crumlin, EJ & Lundgren, E 2018, 'The Role of Oxides in Catalytic CO Oxidation over Rhodium and Palladium', ACS Catalysis, vol. 8, nr. 5, s. 4438-4445. https://doi.org/10.1021/acscatal.8b00498

APA

CBE

Gustafson J, Balmes O, Zhang C, Shipilin M, Schaefer A, Hagman B, Merte LR, Martin NM, Carlsson PA, Jankowski M, Crumlin EJ, Lundgren E. 2018. The Role of Oxides in Catalytic CO Oxidation over Rhodium and Palladium. ACS Catalysis. 8(5):4438-4445. https://doi.org/10.1021/acscatal.8b00498

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Author

Gustafson, Johan ; Balmes, Olivier ; Zhang, Chu ; Shipilin, Mikhail ; Schaefer, Andreas ; Hagman, Benjamin ; Merte, Lindsay R. ; Martin, Natalia M. ; Carlsson, Per Anders ; Jankowski, Maciej ; Crumlin, Ethan J. ; Lundgren, Edvin. / The Role of Oxides in Catalytic CO Oxidation over Rhodium and Palladium. I: ACS Catalysis. 2018 ; Vol. 8, Nr. 5. s. 4438-4445.

RIS

TY - JOUR

T1 - The Role of Oxides in Catalytic CO Oxidation over Rhodium and Palladium

AU - Gustafson, Johan

AU - Balmes, Olivier

AU - Zhang, Chu

AU - Shipilin, Mikhail

AU - Schaefer, Andreas

AU - Hagman, Benjamin

AU - Merte, Lindsay R.

AU - Martin, Natalia M.

AU - Carlsson, Per Anders

AU - Jankowski, Maciej

AU - Crumlin, Ethan J.

AU - Lundgren, Edvin

PY - 2018/5/4

Y1 - 2018/5/4

N2 - Catalytic CO oxidation is a seemingly simple reaction between CO and O2 molecules, one of the reactions in automotive catalytic converters, and the fruit-fly reaction in model catalysis. Surprisingly, the phase responsible for the catalytic activity is still under debate, despite decades of investigations. We have performed a simple but yet conclusive study of single crystal Rh and Pd model catalysts, resolving this controversy. For Rh, the oxygen-covered metallic surface is more active than the oxide, while for Pd, thin oxide films are at least as active as the metallic surface, but a thicker oxide is less active. Apart from resolving a long-standing debate, our results pinpoint important design principles for oxidation catalysts as to prevent catalytic extinction at high oxygen exposures.

AB - Catalytic CO oxidation is a seemingly simple reaction between CO and O2 molecules, one of the reactions in automotive catalytic converters, and the fruit-fly reaction in model catalysis. Surprisingly, the phase responsible for the catalytic activity is still under debate, despite decades of investigations. We have performed a simple but yet conclusive study of single crystal Rh and Pd model catalysts, resolving this controversy. For Rh, the oxygen-covered metallic surface is more active than the oxide, while for Pd, thin oxide films are at least as active as the metallic surface, but a thicker oxide is less active. Apart from resolving a long-standing debate, our results pinpoint important design principles for oxidation catalysts as to prevent catalytic extinction at high oxygen exposures.

KW - active phase

KW - CO oxidation

KW - oxidation catalysis

KW - oxide

KW - palladium

KW - rhodium

KW - surface oxide

UR - http://www.scopus.com/inward/record.url?scp=85046619013&partnerID=8YFLogxK

U2 - 10.1021/acscatal.8b00498

DO - 10.1021/acscatal.8b00498

M3 - Article

VL - 8

SP - 4438

EP - 4445

JO - ACS Catalysis

T2 - ACS Catalysis

JF - ACS Catalysis

SN - 2155-5435

IS - 5

ER -