Catalyst Chemical State during CO Oxidation Reaction on Cu(111) Studied with Ambient-Pressure X-ray Photoelectron Spectroscopy and Near Edge X-ray Adsorption Fine Structure Spectroscopy

2015 ◽  
Vol 137 (34) ◽  
pp. 11186-11190 ◽  
Author(s):  
Baran Eren ◽  
Christian Heine ◽  
Hendrik Bluhm ◽  
Gabor A. Somorjai ◽  
Miquel Salmeron
Keyword(s):  
Fine Structure ◽  
Co Oxidation ◽  
Photoelectron Spectroscopy ◽  
Oxidation Reaction ◽  
Ambient Pressure ◽  
Chemical State ◽  
X Ray ◽  
Co Oxidation Reaction

Operando Near-Ambient Pressure X-ray Photoelectron Spectroscopy Study of the CO Oxidation Reaction on the Oxide/Metal Model Catalyst ZnO/Pt(111)

ACS Catalysis ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 10212-10225 ◽  
Author(s):  
Hang Liu ◽  
Alter Zakhtser ◽  
Ahmed Naitabdi ◽  
François Rochet ◽  
Fabrice Bournel ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Photoelectron Spectroscopy ◽  
Oxidation Reaction ◽  
Ambient Pressure ◽  
Model Catalyst ◽  
Spectroscopy Study ◽  
X Ray ◽  
Co Oxidation Reaction

scholarly journals Stroboscopic operando spectroscopy of the dynamics in heterogeneous catalysis by event-averaging

2021 ◽  
Author(s):  
Jan Knudsen ◽  
Tamires Gallo ◽  
Virgínia Boix ◽  
Marie Strømsheim ◽  
Giulio D'Acunto ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Photoelectron Spectroscopy ◽  
Oxidation Reaction ◽  
Ambient Pressure ◽  
Reaction Conditions ◽  
Catalyst Structure ◽  
Time Resolved ◽  
Co Oxidation Reaction ◽  
Surface Phases ◽  
Gas Environment

Abstract Heterogeneous catalyst surfaces are highly dynamic entities that respond rapidly to changes in their local gas environment, and the dynamics of the response is a decisive factor for the catalysts’ action and activity. Few probes are able to map catalyst structure and local gas environment simultaneously under reaction conditions at the time scales of the dynamic changes. Here we use the CO oxidation reaction over a Pd(100) surface exposed to pressures of 3 and 100 mbar of a CO + O2 gas mixture to demonstrate how such studies can be performed by time-resolved ambient pressure photoelectron spectroscopy. Central elements of the method are cyclic gas pulsing and software-based event-averaging by image recognition of spectral features. For the CO oxidation reaction over Pd(100) our main finding is that that all surface phases – the CO-covered Pd surface, a surface oxide and a thick PdOx phase – catalyse the CO oxidation reaction, in dependence on the supply of gas phase reactants.

Kinetics of the CO oxidation reaction on Pt(111) studied by in situ high-resolution x-ray photoelectron spectroscopy

2004 ◽  
Vol 120 (15) ◽  
pp. 7113-7122 ◽  
Author(s):  
M. Kinne ◽  
T. Fuhrmann ◽  
J. F. Zhu ◽  
C. M. Whelan ◽  
R. Denecke ◽  
...  
Keyword(s):  
High Resolution ◽  
Co Oxidation ◽  
Photoelectron Spectroscopy ◽  
Oxidation Reaction ◽  
X Ray ◽  
Co Oxidation Reaction ◽  
Kinetics Of

In situ study of an oxidation reaction on a Pt/C electrode by ambient pressure hard X-ray photoelectron spectroscopy

2014 ◽  
Vol 105 (13) ◽  
pp. 131602 ◽  
Author(s):  
Yasumasa Takagi ◽  
Heng Wang ◽  
Yohei Uemura ◽  
Eiji Ikenaga ◽  
Oki Sekizawa ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Oxidation Reaction ◽  
Ambient Pressure ◽  
X Ray ◽  
In Situ Study

A near-ambient-pressure XPS study on catalytic CO oxidation reaction over a Ru(101¯0) surface

2014 ◽  
Vol 621 ◽  
pp. 128-132 ◽  
Author(s):  
Ryo Toyoshima ◽  
Masahiro Shimura ◽  
Masaaki Yoshida ◽  
Yuji Monya ◽  
Kazuma Suzuki ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Oxidation Reaction ◽  
Ambient Pressure ◽  
Catalytic Co Oxidation ◽  
Co Oxidation Reaction ◽  
Ambient Pressure Xps ◽  
Xps Study ◽  
Near Ambient Pressure Xps
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