Influence of soil redox conditions on oxidation of biotite

Clay Minerals ◽  
1986 ◽  
Vol 21 (2) ◽  
pp. 149-157 ◽  
Author(s):  
S. Bouda ◽  
K. P. Isaac
Keyword(s):  
Mössbauer Spectroscopy ◽  
Soil Profile ◽  
Mossbauer Spectroscopy ◽  
Redox Conditions ◽  
Soil Profiles ◽  
Moderate Degree ◽  
Soil Redox ◽  
Mößbauer Spectroscopy

AbstractBiotites from three peaty gleyed podzol soil profiles on ranite bedrock were examined to investigate the oxidation of the octahedral Fe during weathering. Oxidation of these biotites as determined by Mössbauer spectroscopy shows a good correlation with the in situ measured soil Eh values of the sampled horizons. In every soil profile the highest Eh measured is in the A horizon and the lowest in the C horizon. Similarly, biotites from the A horizons are the most oxidized compared with those from the lower horizons. In most of the samples the oxidation is accompanied by loss of K+ from the lattice, as demonstrated by a moderate degree of vermiculitization.

In situ 119Sn Mössbauer spectroscopy study of Sn-based electrode materials

2006 ◽  
Vol 167 (1-3) ◽  
pp. 733-738 ◽  
Author(s):  
Abdelmaula Aboulaich ◽  
Florent Robert ◽  
Pierre Emmanuel Lippens ◽  
Laurent Aldon ◽  
Josette Olivier-Fourcade ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Electrode Materials ◽  
Mossbauer Spectroscopy ◽  
Spectroscopy Study ◽  
119Sn Mössbauer Spectroscopy ◽  
Mößbauer Spectroscopy

In situ— High Temperature Mössbauer Spectroscopy of Iron Nitrides and Nitridoferrates

2003 ◽  
Vol 629 (10) ◽  
pp. 1787-1794 ◽  
Author(s):  
V. Ksenofontov ◽  
S. Reiman ◽  
M. Waldeck ◽  
R. Niewa ◽  
R. Kniep ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
High Temperature ◽  
Mossbauer Spectroscopy ◽  
Iron Nitrides ◽  
Mößbauer Spectroscopy

In-situ Mössbauer spectroscopy with MIMOS II

2011 ◽  
Vol 207 (1-3) ◽  
pp. 97-105 ◽  
Author(s):  
Iris Fleischer ◽  
◽  
Göstar Klingelhöfer ◽  
Richard V. Morris ◽  
Christian Schröder ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Mossbauer Spectroscopy ◽  
Mößbauer Spectroscopy ◽  
Mimos Ii

Corrosion Product Identification by Micro-Raman and Mossbauer Spectroscopy

1998 ◽  
Vol 4 (S2) ◽  
pp. 506-507
Author(s):  
F. Adar ◽  
B. Lenain ◽  
D. C. Cook ◽  
S. J. Oh
Keyword(s):  
Mössbauer Spectroscopy ◽  
Mossbauer Spectroscopy ◽  
Spot Size ◽  
Corrosion Products ◽  
Raman Spectrometry ◽  
Mößbauer Spectroscopy ◽  
Metallographic Cross Section ◽  
Steel Coupon ◽  
In Situ Scattering

Micro-Raman spectrometry and Mossbauer spectroscopy have been used to identify the corrosion products on a steel coupon exposed in an industrial environment for 16 years. The Raman analysis was performed on a polished metallographic cross-section in order to map the oxides across the thickness of the coating. The spectra were recorded using a LabRam Micro-Raman spectrograph incorporating a 17 mW HeNe laser (attenuated to 1 mW to prevent oxide transformation), focused to 1 μm spot size, and 1800 g/mm grating. The confocal line-scan imaging enabled 100 spectra to be recorded in one scan at 0.5 um intervals across the thickness of the coating. The Mossbauer analysis was performed using in-situ scattering Mossbauer spectroscopy on the attached corrosion coating and transmission Mossbauer spectroscopy at 300K and 77K on the removed coating, to measure the fraction of each oxide present. Micro-Raman spectrometry showed that the corrosion products had formed in distinct layers as shown in Figure 1.

scholarly journals Mössbauer and mass spectrometry support for iron(ii) catalysts in enantioselective C–H activation

2019 ◽  
Vol 48 (16) ◽  
pp. 5135-5139 ◽  
Author(s):  
Joachim Loup ◽  
Tobias Parchomyk ◽  
Stefan Lülf ◽  
Serhiy Demeshko ◽  
Franc Meyer ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Mössbauer Spectroscopy ◽  
Electrospray Ionization ◽  
Electrospray Ionization Mass Spectrometry ◽  
Mossbauer Spectroscopy ◽  
Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Mößbauer Spectroscopy

A combination of electrospray-ionization mass spectrometry and Mössbauer spectroscopy was used to investigate the species generated in situ in highly enantioselective Fe/NHC-catalyzed C–H alkylations.

Study of Au/SnO x –Al2O3 catalysts used in CO oxidation by in situ Mössbauer spectroscopy

ISIAME 2008 ◽  
2009 ◽  
pp. 515-523
Author(s):  
Ferenc Somodi ◽  
Irina Borbáth ◽  
József L. Margitfalvi ◽  
Sándor Stichleutner ◽  
Károly Lázár
Keyword(s):  
Mössbauer Spectroscopy ◽  
Co Oxidation ◽  
Mossbauer Spectroscopy ◽  
Mößbauer Spectroscopy
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