scholarly journals Partial methanol oxidation over copper: Active sites observed by means of in situ X-ray absorption spectroscopy

2000 ◽  
Vol 2 (15) ◽  
pp. 3473-3481 ◽  
Author(s):  
Th. Schedel-Niedrig ◽  
M. Hävecker ◽  
A. Knop-Gericke ◽  
R. Schlögl
Keyword(s):  
Methanol Oxidation ◽  
Absorption Spectroscopy ◽  
Active Sites ◽  
X Ray ◽  
X Ray Absorption

scholarly journals Catalytic Methanol Oxidation over Copper: Observation of Reaction-Induced Nanoscale Restructuring by Means of In Situ Time-Resolved X-ray Absorption Spectroscopy

2000 ◽  
Vol 6 (10) ◽  
pp. 1870-1876 ◽  
Author(s):  
Ingolf Böttger ◽  
Thomas Schedel-Niedrig, ◽  
Olaf Timpe ◽  
Rainer Gottschall ◽  
Michael Hävecker ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Absorption Spectroscopy ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Absorption

Shedding Light on the Electronic Structure and Local Configuration of Fe/N/C Active Sites – an in Situ X-Ray Absorption Spectroscopy Study

2020 ◽  
Vol MA2020-02 (62) ◽  
pp. 3156-3156
Author(s):  
Kathrin Ebner ◽  
Viktoriia A. Saveleva ◽  
Adam H. Clark ◽  
Grigory Smolentsev ◽  
Jingfeng Chen ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Absorption Spectroscopy ◽  
Active Sites ◽  
Spectroscopy Study ◽  
X Ray ◽  
Local Configuration ◽  
X Ray Absorption

In Situ Ru K-Edge X-ray Absorption Spectroscopy Study of Methanol Oxidation Mechanisms on Model Submonolayer Ru on Pt Nanoparticle Electrocatalyst

2013 ◽  
Vol 117 (37) ◽  
pp. 18904-18912 ◽  
Author(s):  
Christopher J. Pelliccione ◽  
Elena V. Timofeeva ◽  
John P. Katsoudas ◽  
Carlo U. Segre
Keyword(s):  
Methanol Oxidation ◽  
Absorption Spectroscopy ◽  
Spectroscopy Study ◽  
Pt Nanoparticle ◽  
X Ray ◽  
X Ray Absorption ◽  
Oxidation Mechanisms

scholarly journals In Situ X-ray Absorption Spectroscopy Studies of Nanoscale Electrocatalysts

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Maoyu Wang ◽  
Líney Árnadóttir ◽  
Zhichuan J. Xu ◽  
Zhenxing Feng
Keyword(s):  
Absorption Spectroscopy ◽  
Active Sites ◽  
High Surface ◽  
Nano Particles ◽  
Ex Situ ◽  
X Ray ◽  
In Situ Techniques ◽  
Surface Areas ◽  
X Ray Absorption

Abstract Nanoscale electrocatalysts have exhibited promising activity and stability, improving the kinetics of numerous electrochemical reactions in renewable energy systems such as electrolyzers, fuel cells, and metal-air batteries. Due to the size effect, nano particles with extreme small size have high surface areas, complicated morphology, and various surface terminations, which make them different from their bulk phases and often undergo restructuring during the reactions. These restructured materials are hard to probe by conventional ex-situ characterizations, thus leaving the true reaction centers and/or active sites difficult to determine. Nowadays, in situ techniques, particularly X-ray absorption spectroscopy (XAS), have become an important tool to obtain oxidation states, electronic structure, and local bonding environments, which are critical to investigate the electrocatalysts under real reaction conditions. In this review, we go over the basic principles of XAS and highlight recent applications of in situ XAS in studies of nanoscale electrocatalysts.

Application of In Situ X-ray Absorption Spectroscopy to Study Dilute Chromium Ions in a Molten Chloride Salt

2019 ◽  
Author(s):  
Jisue Moon ◽  
Carter Abney ◽  
Dmitriy Dolzhnikov ◽  
James M. Kurley ◽  
Kevin A. Beyer ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Local Structure ◽  
Chloride Salt ◽  
X Ray ◽  
Molten Chloride ◽  
Stable Species ◽  
Higher Temperature ◽  
Cr Concentration ◽  
X Ray Absorption

The local structure of dilute CrCl<sub>3</sub> in a molten MgCl<sub>2</sub>:KCl salt was investigated by <i>in situ</i> x-ray absorption spectroscopy (XAS) at temperatures from room temperature to 800<sup>o</sup>C. This constitutes the first experiment where dilute Cr speciation is explored in a molten chloride salt, ostensibly due to the compounding challenges arising from a low Cr concentration in a matrix of heavy absorbers at extreme temperatures. CrCl<sub>3</sub> was confirmed to be the stable species between 200 and 500<sup>o</sup>C, while mobility of metal ions at higher temperature (>700<sup>o</sup>C) prevented confirmation of the local structure.

Unveiling the Complex Redox Reactions of SnO2 in Li-Ion Batteries Using Operando X-ray Photoelectron Spectroscopy and In Situ X-ray Absorption Spectroscopy

2021 ◽  
Vol 13 (2) ◽  
pp. 2547-2557
Author(s):  
Marta Mirolo ◽  
Xiaohan Wu ◽  
Carlos A. F. Vaz ◽  
Petr Novák ◽  
Mario El Kazzi
Keyword(s):  
Absorption Spectroscopy ◽  
Photoelectron Spectroscopy ◽  
Redox Reactions ◽  
Li Ion Batteries ◽  
X Ray ◽  
Li Ion ◽  
X Ray Absorption

scholarly journals Resolving the Evolution of Atomic Layer-Deposited Thin-Film Growth by Continuous In Situ X-Ray Absorption Spectroscopy

2021 ◽  
Author(s):  
Xiaohui Qu ◽  
Danhua Yan ◽  
Ruoshui Li ◽  
Jiajie Cen ◽  
Chenyu Zhou ◽  
...  
Keyword(s):  
Thin Film ◽  
Absorption Spectroscopy ◽  
Film Growth ◽  
Atomic Layer ◽  
Thin Film Growth ◽  
X Ray ◽  
X Ray Absorption

Revealing the structural transformation of rutile RuO2via in situ X-ray absorption spectroscopy during the oxygen evolution reaction

2019 ◽  
Vol 48 (21) ◽  
pp. 7122-7129 ◽  
Author(s):  
Chia-Jui Chang ◽  
You-Chiuan Chu ◽  
Hao-Yu Yan ◽  
Yen-Fa Liao ◽  
Hao Ming Chen
Keyword(s):  
Oxygen Evolution ◽  
Structural Transformation ◽  
Absorption Spectroscopy ◽  
Oxygen Evolution Reaction ◽  
The State ◽  
X Ray ◽  
Alkaline Conditions ◽  
X Ray Absorption ◽  
State Of Art

The state-of-art RuO2 catalyst for the oxygen evolution reaction (OER) is measured by using in situ X-ray absorption spectroscopy (XAS) to elucidate the structural transformation during catalyzing the reaction in acidic and alkaline conditions.

Simple flow through reaction cells for in situ transmission and fluorescence x-ray-absorption spectroscopy of heterogeneous catalysts

2006 ◽  
Vol 77 (2) ◽  
pp. 023105 ◽  
Author(s):  
Simon R. Bare ◽  
George E. Mickelson ◽  
Frank S. Modica ◽  
Andrzej Z. Ringwelski ◽  
N. Yang
Keyword(s):  
Absorption Spectroscopy ◽  
Heterogeneous Catalysts ◽  
X Ray ◽  
Flow Through ◽  
X Ray Absorption ◽  
Simple Flow

scholarly journals Unraveling the Structure of Mn-Promoted Co/TiO2 Fischer-Tropsch Catalysts by In Situ X-Ray Absorption Spectroscopy

2007 ◽  
Author(s):  
Didier Grandjean ◽  
Fernando Morales ◽  
Ad Mens ◽  
Frank M. F. de Groot ◽  
Bert M. Weckhuysen
Keyword(s):  
Absorption Spectroscopy ◽  
Fischer Tropsch ◽  
X Ray ◽  
X Ray Absorption
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