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
VL - 621
SP - 128
EP - 132
JO - Surface Science
JF - Surface Science
SN - 0039-6028
ER -