Active copper species of co-precipitated copper-ceria catalysts in the CO-PROX reaction: An in situ XANES and DRIFTS study

2020 ◽  
Author(s):  
Aline Rodrigues Miranda Cruz ◽  
Elisabete Moreira Assaf ◽  
Janaina Fernandes Gomes ◽  
José Mansur Assaf
Keyword(s):  
Copper Species ◽  
Ceria Catalysts ◽  
In Situ Xanes

Mechanism of Gold Nanoparticle Formation in the Classical Citrate Synthesis Method Derived from Coupled In Situ XANES and SAXS Evaluation

2010 ◽  
Vol 132 (4) ◽  
pp. 1296-1301 ◽  
Author(s):  
Jörg Polte ◽  
T. Torsten Ahner ◽  
Friedmar Delissen ◽  
Sergey Sokolov ◽  
Franziska Emmerling ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
Synthesis Method ◽  
Nanoparticle Formation ◽  
In Situ Xanes

In situ XANES Study of Co2+ Ion Adsorption on Fe3O4 Nanoparticles in Supercritical Aqueous Fluids

2012 ◽  
Vol 1383 ◽  
Author(s):  
Hao Yan ◽  
Robert A. Mayanovic ◽  
Joseph Demster ◽  
Alan J. Anderson
Keyword(s):  
Angular Momentum ◽  
Density Of States ◽  
Fe3o4 Nanoparticles ◽  
Ion Adsorption ◽  
Edge Structure ◽  
X Ray ◽  
Peak Fitting ◽  
X Ray Absorption ◽  
In Situ Xanes

ABSTRACTIn situ x-ray absorption spectroscopy (XAS) measurements were made on Fe3O4 nanoparticles in supercritical aqueous fluids to 500 °C in order to study their reactivity with Co2+ aqua ions and to investigate the structural properties of the reacted nanoparticles. The analyses of the x-ray absorption near edge structure (XANES) of XAS indicate that reactivity of Fe3O4 nanoparticles with Co2+ ions is minimal to 200 °C but becomes significant in the 250–500 °C temperature range. XANES and angular momentum projected density of states (l-DOS) calculations were carried out using the FEFF8.2 code and analyses were made using multi-peak fitting to determine the origin of the features exhibited in the spectra.

Ceria and Gold/Ceria Catalysts for the Abatement of Polycyclic Aromatic Hydrocarbons: An In Situ DRIFTS Study

2009 ◽  
Vol 52 (5) ◽  
pp. 492-500 ◽  
Author(s):  
Benjamín Solsona ◽  
Tomás García ◽  
Ramón Murillo ◽  
Ana M. Mastral ◽  
Edwin Ntainjua Ndifor ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
In Situ Drifts ◽  
Polycyclic Aromatic ◽  
Ceria Catalysts

scholarly journals In situ XANES of an iron porphyrin irreversibly adsorbed on an electrode surface

1991 ◽  
Vol 113 (24) ◽  
pp. 9063-9066 ◽  
Author(s):  
Sunghyun Kim ◽  
In Tae Bae ◽  
Marnita Sandifer ◽  
Philip N. Ross ◽  
Roger Carr ◽  
...  
Keyword(s):  
Electrode Surface ◽  
Iron Porphyrin ◽  
In Situ Xanes
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