scholarly journals Mechanistic insights into the selective oxidation of 5-(hydroxymethyl)furfural over silver-based catalysts

2020 ◽  
Vol 10 (15) ◽  
pp. 5036-5047 ◽  
Author(s):  
Oliver R. Schade ◽  
Abhijeet Gaur ◽  
Anna Zimina ◽  
Erisa Saraçi ◽  
Jan-Dierk Grunwaldt
Keyword(s):  
Selective Oxidation ◽  
Absorption Spectroscopy ◽  
Reaction Conditions ◽  
X Ray ◽  
Hydroxymethyl Furfural ◽  
X Ray Absorption ◽  
Catalyzed Oxidation

Silver-catalyzed oxidation of 5-(hydroxymethyl)furfural (HMF) to 5-hydroxymethyl-2-furancarboxylic acid (HFCA) was investigated using in situ X-ray absorption spectroscopy under reaction conditions over Ag/ZrO2 and Ag/TiO2 catalysts.

Methodology for the structural characterisation of V x O y species supported on silica under reaction conditions by means of in situ O K-edge X-ray absorption spectroscopy

2009 ◽  
Vol 246 (7) ◽  
pp. 1459-1469 ◽  
Author(s):  
Michael Hävecker ◽  
Matteo Cavalleri ◽  
Rita Herbert ◽  
Rolf Follath ◽  
Axel Knop-Gericke ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Reaction Conditions ◽  
X Ray ◽  
Structural Characterisation ◽  
X Ray Absorption

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.

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
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