Behavior of heptavalent technetium in concentrated triflic acid under alpha-irradiation: technetium-triflate complex characterized by X-ray absorption fine structure spectroscopy and DFT

2017 ◽  
Vol 105 (2) ◽  
Author(s):  
Ibtihel Denden ◽  
Jérôme Roques ◽  
Frederic Poineau ◽  
Pier Lorenzo Solari ◽  
Michel L. Schlegel ◽  
...  
Keyword(s):  
Fine Structure ◽  
First Principles ◽  
First Principles Calculations ◽  
Triflic Acid ◽  
X Ray ◽  
Xafs Spectroscopy ◽  
Absorption Fine ◽  
X Ray Absorption ◽  
Alpha Irradiation ◽  
Theoretical Results

AbstractThe nature of the Tc species produced after the alpha-irradiation of Tc(VII) in concentrated triflic acid has been investigated by X-ray absoprtion fine structure (XAFS) spectroscopy and first principles calculations. Experimental and theoretical results are consistent with the formation of Tc

Local structure ofCuIn3Se5:X-ray absorption fine structure study and first-principles calculations

2003 ◽  
Vol 68 (5) ◽  
Author(s):  
C.-H. Chang ◽  
Su-Huai Wei ◽  
J. W. Johnson ◽  
S. B. Zhang ◽  
N. Leyarovska ◽  
...  
Keyword(s):  
Fine Structure ◽  
First Principles ◽  
Local Structure ◽  
Structure Study ◽  
First Principles Calculations ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

The structure of Mn-doped tris(8-hydroxyquinoline)gallium by extended x-ray absorption fine structure spectroscopy and first principles calculations

2012 ◽  
Vol 112 (11) ◽  
pp. 113519 ◽  
Author(s):  
Shaojie Fang ◽  
Zhiyong Pang ◽  
Yonghua Du ◽  
Lirong Zheng ◽  
Xijian Zhang ◽  
...  
Keyword(s):  
Fine Structure ◽  
First Principles ◽  
First Principles Calculations ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption ◽  
Mn Doped

Kinetic analysis of Ag particle redispersion into ZSM-5 in the presence of coke using in situ XAFS

2021 ◽  
Author(s):  
Kazumasa Murata ◽  
Junya Ohyama ◽  
Atsushi Satsuma
Keyword(s):  
Fine Structure ◽  
Kinetic Analysis ◽  
X Ray ◽  
Xafs Spectroscopy ◽  
Absorption Fine ◽  
Ag Particles ◽  
In Situ Xafs ◽  
Ag Particle ◽  
X Ray Absorption

In the present study, the redispersion behavior of Ag particles on ZSM-5 in the presence of coke was observed using in situ X-ray absorption fine structure (XAFS) spectroscopy.

X-Ray Absorption Fine Structure Study in FeTiO3

1997 ◽  
Vol 11 (16n17) ◽  
pp. 745-748 ◽  
Author(s):  
Rebekah Min-Fang Hsu ◽  
Kai-Jan Lin ◽  
Cheng Tien ◽  
Lin-Yan Jang
Keyword(s):  
Absorption Spectrum ◽  
Fine Structure ◽  
Absorption Spectra ◽  
Mixed Valence ◽  
Structure Study ◽  
X Ray ◽  
Xafs Spectroscopy ◽  
Absorption Fine ◽  
Trivalent State ◽  
X Ray Absorption

X-ray absorption fine structure XAFS spectroscopy has been used to determine the valence system for the Fe atom in ilmenite, FeTiO3 . This is the first XAFS data in FeTiO3 to our knowledge. The α- Fe2O3 data served as the standard in determining the ionization of the Fe atom in FeTiO3 . Observation of intensity and k-space are consistent. There was no evidence of mixed valence on comparing the FeTiO3 near edge X-ray absorption spectrum with α- Fe2O3 data. The absorption spectra suggest that iron is in the trivalent state in ilmenite.

scholarly journals Recent progress in the performance of HAPG based laboratory EXAFS and XANES spectrometers

2020 ◽  
Vol 35 (10) ◽  
pp. 2298-2304
Author(s):  
Christopher Schlesiger ◽  
Sebastian Praetz ◽  
Richard Gnewkow ◽  
Wolfgang Malzer ◽  
Birgit Kanngießer
Keyword(s):  
Fine Structure ◽  
Recent Progress ◽  
Pyrolytic Graphite ◽  
New Developments ◽  
X Ray ◽  
Xafs Spectroscopy ◽  
Absorption Fine ◽  
Mosaic Crystals ◽  
X Ray Absorption

New developments in the description and modeling of Highly Annealed Pyrolytic Graphite (HAPG) mosaic crystals have led to the possibility of designing optimized optical solutions for X-ray absorption fine structure (XAFS) spectroscopy.

Oxybarometry and valence quantification based on microscale X-ray absorption fine structure (XAFS) spectroscopy of multivalent elements

2020 ◽  
Vol 531 ◽  
pp. 119305 ◽  
Author(s):  
S.R. Sutton ◽  
A. Lanzirotti ◽  
M. Newville ◽  
M. Darby Dyar ◽  
J. Delaney
Keyword(s):  
Fine Structure ◽  
X Ray ◽  
Xafs Spectroscopy ◽  
Absorption Fine ◽  
X Ray Absorption
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