The valence state analysis of Ti in FeTiO3 by soft X-ray spectroscopy

Sei Fukushima; Takashi Kimura; Kenji Nishida; Vlaicu A. Mihai; Hideki Yoshikawa; Masahiro Kimura; Tatsuo Fujii; Hirofumi Oohashi; Yoshiaki Ito; Michiru Yamashita

doi:10.1007/s00604-006-0532-y

The valence state analysis of Ti in FeTiO₃ by soft X-ray spectroscopy

Sei Fukushima, Takashi Kimura, Kenji Nishida, Vlaicu A. Mihai, Hideki Yoshikawa, Masahiro Kimura, Tatsuo Fujii, Hirofumi Oohashi, Yoshiaki Ito, Michiru Yamashita

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The measurement of soft X-ray spectra, Ti Kα_1,2, Lα_1,2 and O Kα, of Ti in several titanium oxide compounds was carried out by FE-WD-EPMA (wavelength dispersive - electron probe micro-analyzer with field emission type electron gun) and HRXRF (high-resolution X-ray fluorescence spectroscopy). From the results of measurements, it was found that the valence state of Ti in FeTiO₃ (ilmenite) was at least partially Ti^III, might be the mixed state of Ti^IV and Ti^III. And, Ti in MgTiO₃ (ilmenite system) was confirmed as Ti^IV. From the discussion, it can be presumed that the effective charge of the oxygen should be not-uniform and should be different subtlety by the cationic difference, Fe or Mg, even if it had equal crystal structure of the ilmenite system, and that this subtlety difference gave any effects on the valence state of Ti.

Original language	English
Pages (from-to)	141-145
Number of pages	5
Journal	Microchimica Acta
Volume	155
Issue number	1-2
DOIs	https://doi.org/10.1007/s00604-006-0532-y
Publication status	Published - Sept 1 2006

Keywords

High-resolution X-ray fluorescence spectroscopy
Ilmenite
Valence state analysis
Valence state of Ti
WD-EPMA with field emission type electron gun

ASJC Scopus subject areas

Analytical Chemistry

Access to Document

10.1007/s00604-006-0532-y

Cite this

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title = "The valence state analysis of Ti in FeTiO3 by soft X-ray spectroscopy",

abstract = "The measurement of soft X-ray spectra, Ti Kα1,2, Lα1,2 and O Kα, of Ti in several titanium oxide compounds was carried out by FE-WD-EPMA (wavelength dispersive - electron probe micro-analyzer with field emission type electron gun) and HRXRF (high-resolution X-ray fluorescence spectroscopy). From the results of measurements, it was found that the valence state of Ti in FeTiO3 (ilmenite) was at least partially TiIII, might be the mixed state of TiIV and TiIII. And, Ti in MgTiO3 (ilmenite system) was confirmed as TiIV. From the discussion, it can be presumed that the effective charge of the oxygen should be not-uniform and should be different subtlety by the cationic difference, Fe or Mg, even if it had equal crystal structure of the ilmenite system, and that this subtlety difference gave any effects on the valence state of Ti.",

keywords = "High-resolution X-ray fluorescence spectroscopy, Ilmenite, Valence state analysis, Valence state of Ti, WD-EPMA with field emission type electron gun",

author = "Sei Fukushima and Takashi Kimura and Kenji Nishida and Mihai, {Vlaicu A.} and Hideki Yoshikawa and Masahiro Kimura and Tatsuo Fujii and Hirofumi Oohashi and Yoshiaki Ito and Michiru Yamashita",

year = "2006",

month = sep,

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doi = "10.1007/s00604-006-0532-y",

language = "English",

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T1 - The valence state analysis of Ti in FeTiO3 by soft X-ray spectroscopy

AU - Fukushima, Sei

AU - Kimura, Takashi

AU - Nishida, Kenji

AU - Mihai, Vlaicu A.

AU - Yoshikawa, Hideki

AU - Kimura, Masahiro

AU - Fujii, Tatsuo

AU - Oohashi, Hirofumi

AU - Ito, Yoshiaki

AU - Yamashita, Michiru

PY - 2006/9/1

Y1 - 2006/9/1

N2 - The measurement of soft X-ray spectra, Ti Kα1,2, Lα1,2 and O Kα, of Ti in several titanium oxide compounds was carried out by FE-WD-EPMA (wavelength dispersive - electron probe micro-analyzer with field emission type electron gun) and HRXRF (high-resolution X-ray fluorescence spectroscopy). From the results of measurements, it was found that the valence state of Ti in FeTiO3 (ilmenite) was at least partially TiIII, might be the mixed state of TiIV and TiIII. And, Ti in MgTiO3 (ilmenite system) was confirmed as TiIV. From the discussion, it can be presumed that the effective charge of the oxygen should be not-uniform and should be different subtlety by the cationic difference, Fe or Mg, even if it had equal crystal structure of the ilmenite system, and that this subtlety difference gave any effects on the valence state of Ti.

AB - The measurement of soft X-ray spectra, Ti Kα1,2, Lα1,2 and O Kα, of Ti in several titanium oxide compounds was carried out by FE-WD-EPMA (wavelength dispersive - electron probe micro-analyzer with field emission type electron gun) and HRXRF (high-resolution X-ray fluorescence spectroscopy). From the results of measurements, it was found that the valence state of Ti in FeTiO3 (ilmenite) was at least partially TiIII, might be the mixed state of TiIV and TiIII. And, Ti in MgTiO3 (ilmenite system) was confirmed as TiIV. From the discussion, it can be presumed that the effective charge of the oxygen should be not-uniform and should be different subtlety by the cationic difference, Fe or Mg, even if it had equal crystal structure of the ilmenite system, and that this subtlety difference gave any effects on the valence state of Ti.

KW - High-resolution X-ray fluorescence spectroscopy

KW - Ilmenite

KW - Valence state analysis

KW - Valence state of Ti

KW - WD-EPMA with field emission type electron gun

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