In situ analysis of catalytically active Pd surfaces for CO oxidation with near ambient pressure XPS

Hiroshi Kondoh; Ryo Toyoshima; Yuji Monya; Masaaki Yoshida; Kazuhiko Mase; Kenta Amemiya; Bongjin Simon Mun

doi:10.1016/j.cattod.2015.05.016

In situ analysis of catalytically active Pd surfaces for CO oxidation with near ambient pressure XPS

Hiroshi Kondoh, Ryo Toyoshima, Yuji Monya, Masaaki Yoshida, Kazuhiko Mase, Kenta Amemiya, Bongjin Simon Mun

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

X-ray photoelectron spectroscopy (XPS) is useful for in situ analysis of catalytically active surfaces under reaction conditions. We conducted in situ observations of CO oxidation on Pd single-crystal surfaces with different orientations under near ambient pressure (NAP) conditions with XPS. In this short review we compare catalytically active surfaces of Pd with the different orientations. Both surface oxides and atomic oxygen chemisorbed on metallic surfaces can be active for CO oxidation depending on surface geometric structure. We propose similarity between the surface oxides and the chemisorbed oxygen from a viewpoint of availability of active oxygen. Catalytic activity of the metallic surface under NAP condition is also compared with that under ultrahigh vacuum conditions.

Original language	English
Pages (from-to)	14-20
Number of pages	7
Journal	Catalysis Today
Volume	260
DOIs	https://doi.org/10.1016/j.cattod.2015.05.016
Publication status	Published - 2016 Feb 1

Keywords

Ambient pressure XPS
CO oxidation
In-situ observation

ASJC Scopus subject areas

Catalysis
Chemistry(all)

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10.1016/j.cattod.2015.05.016

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title = "In situ analysis of catalytically active Pd surfaces for CO oxidation with near ambient pressure XPS",

abstract = "X-ray photoelectron spectroscopy (XPS) is useful for in situ analysis of catalytically active surfaces under reaction conditions. We conducted in situ observations of CO oxidation on Pd single-crystal surfaces with different orientations under near ambient pressure (NAP) conditions with XPS. In this short review we compare catalytically active surfaces of Pd with the different orientations. Both surface oxides and atomic oxygen chemisorbed on metallic surfaces can be active for CO oxidation depending on surface geometric structure. We propose similarity between the surface oxides and the chemisorbed oxygen from a viewpoint of availability of active oxygen. Catalytic activity of the metallic surface under NAP condition is also compared with that under ultrahigh vacuum conditions.",

keywords = "Ambient pressure XPS, CO oxidation, In-situ observation",

author = "Hiroshi Kondoh and Ryo Toyoshima and Yuji Monya and Masaaki Yoshida and Kazuhiko Mase and Kenta Amemiya and Mun, {Bongjin Simon}",

note = "Funding Information: We thank the Photon Factory staffs for their technical supports. This study was supported by the Grant-in-Aid for scientific research (Nos. 20245004 and 26248008 ) and the MEXT-Supported Program for the Strategic Research Foundation at Private Universities, 2009–2013 . The experiments have been performed under the approval of the Photon Factory Program Advisory Committee (PF PAC Nos. 2012G093 and 2012S2-006). R.T. acknowledges the support by JSPS Research Fellowship for Young Scientists. Publisher Copyright: {\textcopyright} 2015 Elsevier B.V. All rights reserved.",

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doi = "10.1016/j.cattod.2015.05.016",

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T1 - In situ analysis of catalytically active Pd surfaces for CO oxidation with near ambient pressure XPS

AU - Kondoh, Hiroshi

AU - Toyoshima, Ryo

AU - Monya, Yuji

AU - Yoshida, Masaaki

AU - Mase, Kazuhiko

AU - Amemiya, Kenta

AU - Mun, Bongjin Simon

N1 - Funding Information: We thank the Photon Factory staffs for their technical supports. This study was supported by the Grant-in-Aid for scientific research (Nos. 20245004 and 26248008 ) and the MEXT-Supported Program for the Strategic Research Foundation at Private Universities, 2009–2013 . The experiments have been performed under the approval of the Photon Factory Program Advisory Committee (PF PAC Nos. 2012G093 and 2012S2-006). R.T. acknowledges the support by JSPS Research Fellowship for Young Scientists. Publisher Copyright: © 2015 Elsevier B.V. All rights reserved.

PY - 2016/2/1

Y1 - 2016/2/1

N2 - X-ray photoelectron spectroscopy (XPS) is useful for in situ analysis of catalytically active surfaces under reaction conditions. We conducted in situ observations of CO oxidation on Pd single-crystal surfaces with different orientations under near ambient pressure (NAP) conditions with XPS. In this short review we compare catalytically active surfaces of Pd with the different orientations. Both surface oxides and atomic oxygen chemisorbed on metallic surfaces can be active for CO oxidation depending on surface geometric structure. We propose similarity between the surface oxides and the chemisorbed oxygen from a viewpoint of availability of active oxygen. Catalytic activity of the metallic surface under NAP condition is also compared with that under ultrahigh vacuum conditions.

AB - X-ray photoelectron spectroscopy (XPS) is useful for in situ analysis of catalytically active surfaces under reaction conditions. We conducted in situ observations of CO oxidation on Pd single-crystal surfaces with different orientations under near ambient pressure (NAP) conditions with XPS. In this short review we compare catalytically active surfaces of Pd with the different orientations. Both surface oxides and atomic oxygen chemisorbed on metallic surfaces can be active for CO oxidation depending on surface geometric structure. We propose similarity between the surface oxides and the chemisorbed oxygen from a viewpoint of availability of active oxygen. Catalytic activity of the metallic surface under NAP condition is also compared with that under ultrahigh vacuum conditions.

KW - Ambient pressure XPS

KW - CO oxidation

KW - In-situ observation

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JO - Catalysis Today

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In situ analysis of catalytically active Pd surfaces for CO oxidation with near ambient pressure XPS

Abstract

Keywords

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