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Blomberg S, Hejral U, Shipilin M, Albertin S, Karlsson H, Hulteberg C, Lömker P, Goodwin C, Degerman D, Gustafson J, Schlueter C, Nilsson A, Lundgren E, Amann P. Bridging the Pressure Gap in CO Oxidation. ACS Catal 2021; 11:9128-9135. [PMID: 34476111 PMCID: PMC8397290 DOI: 10.1021/acscatal.1c00806] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 06/11/2021] [Indexed: 11/28/2022]
Abstract
Performing fundamental operando catalysis studies under realistic conditions is a key to further develop and increase the efficiency of industrial catalysts. Operando X-ray photoelectron spectroscopy (XPS) experiments have been limited to pressures, and the relevance for industrial applications has been questioned. Herein, we report on the CO oxidation experiment on Pd(100) performed at a total pressure of 1 bar using XPS. We investigate the light-off regime and the surface chemical composition at the atomistic level in the highly active phase. Furthermore, the observed gas-phase photoemission peaks of CO2, CO, and O2 indicate that the kinetics of the reaction during the light-off regime can be followed operando, and by studying the reaction rate of the reaction, the activation energy is calculated. The reaction was preceded by an in situ oxidation study in 7% O2 in He and a total pressure of 70 mbar to confirm the surface sensitivity and assignment of the oxygen-induced photoemission peaks. However, oxygen-induced photoemission peaks were not observed during the reaction studies, but instead, a metallic Pd phase is present in the highly active regime under the conditions applied. The novel XPS setup utilizes hard X-rays to enable high-pressure studies, combined with a grazing incident angle to increase the surface sensitivity of the measurement. Our findings demonstrate the possibilities of achieving chemical information of the catalyst, operando, on an atomistic level, under industrially relevant conditions.
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Affiliation(s)
- Sara Blomberg
- Department of Chemical Engineering, Lund University, Lund 221 00, Sweden
| | - Uta Hejral
- Department of Physics, Lund University, Lund 221 00, Sweden
| | - Mikhail Shipilin
- Department of Physics, AlbaNova University Center, Stockholm University, Stockholm 10691, Sweden
| | | | - Hanna Karlsson
- Department of Chemical Engineering, Lund University, Lund 221 00, Sweden
| | | | - Patrick Lömker
- Photon Science, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, Hamburg 22607, Germany
| | - Christopher Goodwin
- Department of Physics, AlbaNova University Center, Stockholm University, Stockholm 10691, Sweden
| | - David Degerman
- Department of Physics, AlbaNova University Center, Stockholm University, Stockholm 10691, Sweden
| | | | - Christoph Schlueter
- Photon Science, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, Hamburg 22607, Germany
| | - Anders Nilsson
- Department of Physics, AlbaNova University Center, Stockholm University, Stockholm 10691, Sweden
| | - Edvin Lundgren
- Department of Physics, Lund University, Lund 221 00, Sweden
| | - Peter Amann
- Department of Physics, AlbaNova University Center, Stockholm University, Stockholm 10691, Sweden
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Zhou B, Huang E, Almeida R, Gurses S, Ungar A, Zetterberg J, Kulkarni A, Kronawitter CX, Osborn DL, Hansen N, Frank JH. Near-Surface Imaging of the Multicomponent Gas Phase above a Silver Catalyst during Partial Oxidation of Methanol. ACS Catal 2020. [DOI: 10.1021/acscatal.0c04396] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Bo Zhou
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
- Department of Mechanics and Aerospace Engineering, Southern University of Science and Technology, Shenzhen 518055, P. R. China
| | - Erxiong Huang
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - Raybel Almeida
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - Sadi Gurses
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Alexander Ungar
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - Johan Zetterberg
- Division of Combustion Physics, Lund University, Lund SE-221 00, Sweden
| | - Ambarish Kulkarni
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Coleman X. Kronawitter
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - David L. Osborn
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - Nils Hansen
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - Jonathan H. Frank
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
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