A near-ambient-pressure XPS study on catalytic CO oxidation reaction over a Ru(10 1 ̄ 0) surface

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

doi:10.1016/j.susc.2013.11.005

A near-ambient-pressure XPS study on catalytic CO oxidation reaction over a Ru(10 1 ̄ 0) surface

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

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

13 Citations (Scopus)

Abstract

We investigated the interactions of CO and O₂ with Ru(101̄0) single crystal surfaces, and studied the in-situ catalytic oxidation reaction of CO on the surface under near realistic pressure conditions by using a combination of near-ambient-pressure x-ray photoelectron spectroscopy and differential pumping mass spectroscopy. At lower temperatures (T < 190 C), most of the surface keeps metallic and is covered by both chemisorbed atomic oxygen and CO, and the CO₂ formation rate is relatively slow. At higher temperatures, the reaction rate significantly increases and reaches the saturation, where the Ru surface is dominated by a bulk oxide (i.e. RuO₂).

Original language	English
Pages (from-to)	128-132
Number of pages	5
Journal	Surface Science
Volume	621
DOIs	https://doi.org/10.1016/j.susc.2013.11.005
Publication status	Published - 03-2014
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.susc.2013.11.005

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@article{edbb3d19d7da464597d202e0b4cc1d10,

title = "A near-ambient-pressure XPS study on catalytic CO oxidation reaction over a Ru(10 1{\= } 0) surface",

abstract = "We investigated the interactions of CO and O2 with Ru(10{\=1}0) single crystal surfaces, and studied the in-situ catalytic oxidation reaction of CO on the surface under near realistic pressure conditions by using a combination of near-ambient-pressure x-ray photoelectron spectroscopy and differential pumping mass spectroscopy. At lower temperatures (T < 190 C), most of the surface keeps metallic and is covered by both chemisorbed atomic oxygen and CO, and the CO2 formation rate is relatively slow. At higher temperatures, the reaction rate significantly increases and reaches the saturation, where the Ru surface is dominated by a bulk oxide (i.e. RuO2).",

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

note = "Funding Information: The authors thank the Photon Factory staff for their technical supports. This study was supported by the Grants-in-Aid for scientific research (No. 20245004 ) 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). ",

year = "2014",

month = mar,

doi = "10.1016/j.susc.2013.11.005",

language = "English",

volume = "621",

pages = "128--132",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - A near-ambient-pressure XPS study on catalytic CO oxidation reaction over a Ru(10 1 ̄ 0) surface

AU - Toyoshima, Ryo

AU - Shimura, Masahiro

AU - Yoshida, Masaaki

AU - Monya, Yuji

AU - Suzuki, Kazuma

AU - Amemiya, Kenta

AU - Mase, Kazuhiko

AU - Mun, Bongjin Simon

AU - Kondoh, Hiroshi

N1 - Funding Information: The authors thank the Photon Factory staff for their technical supports. This study was supported by the Grants-in-Aid for scientific research (No. 20245004 ) 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).

PY - 2014/3

Y1 - 2014/3

N2 - We investigated the interactions of CO and O2 with Ru(101̄0) single crystal surfaces, and studied the in-situ catalytic oxidation reaction of CO on the surface under near realistic pressure conditions by using a combination of near-ambient-pressure x-ray photoelectron spectroscopy and differential pumping mass spectroscopy. At lower temperatures (T < 190 C), most of the surface keeps metallic and is covered by both chemisorbed atomic oxygen and CO, and the CO2 formation rate is relatively slow. At higher temperatures, the reaction rate significantly increases and reaches the saturation, where the Ru surface is dominated by a bulk oxide (i.e. RuO2).

AB - We investigated the interactions of CO and O2 with Ru(101̄0) single crystal surfaces, and studied the in-situ catalytic oxidation reaction of CO on the surface under near realistic pressure conditions by using a combination of near-ambient-pressure x-ray photoelectron spectroscopy and differential pumping mass spectroscopy. At lower temperatures (T < 190 C), most of the surface keeps metallic and is covered by both chemisorbed atomic oxygen and CO, and the CO2 formation rate is relatively slow. At higher temperatures, the reaction rate significantly increases and reaches the saturation, where the Ru surface is dominated by a bulk oxide (i.e. RuO2).

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U2 - 10.1016/j.susc.2013.11.005

DO - 10.1016/j.susc.2013.11.005

M3 - Article

AN - SCOPUS:84891809843

SN - 0039-6028

VL - 621

SP - 128

EP - 132

JO - Surface Science

JF - Surface Science

ER -

A near-ambient-pressure XPS study on catalytic CO oxidation reaction over a Ru(10 1 ̄ 0) surface

Abstract

All Science Journal Classification (ASJC) codes

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