XAFS analyses of molten metal fluorides

Haruaki Matsuura, Sou Watanabe, Hiroshi Akatsuka, Yoshihiro Okamoto, Ashok K. Adya

Research output: Contribution to journalArticle

  • 13 Citations

Abstract

X-ray absorption fine structure studies of molten metal fluorides containing the materials related to nuclear engineering are intensively summarized. By using XAFS spectra data of divalent and trivalent cation metal fluorides in molten state which have been collected by authors’ group for a few years, local structure have been extracted and discussed systematically in conjunction with other spectroscopic studies and numerical calculations. In molten divalent fluorides, tetrahedral coordination of fluorides around a cation is predominant. In the case of pure molten trivalent fluorides, structure with more than 6-coordination has been suggested in some cases, but octahedral coordination structure is much stabilized at heavier rare earth metal fluorides. By mixing with alkali metal fluorides, it is a general trend that inter-ionic distances keep constant, but coordination number of fluorides decreases. In experimental chapter, all the details of sample preparation, furnace installation, X-ray optics setups and data analyses procedures are explained. Finally, future expectations of XAFS technique are also suggested.
Original languageEnglish
Pages (from-to)53-60
Number of pages8
JournalJournal of Fluorine Chemistry
Volume130
Issue number1
DOIs
StatePublished - Jan 2009

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metal fluorides
Fluorides
Metals
fluoride
fluorides
cations
metal
Molten materials
cation
Kanamycin
geometrical optics
coordination number
alkali metals
installing
furnaces
rare earth elements
fine structure
engineering
trends
preparation

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Matsuura, H., Watanabe, S., Akatsuka, H., Okamoto, Y., & Adya, A. K. (2009). XAFS analyses of molten metal fluorides. Journal of Fluorine Chemistry, 130(1), 53-60. DOI: 10.1016/j.jfluchem.2008.07.012

Matsuura, Haruaki; Watanabe, Sou; Akatsuka, Hiroshi; Okamoto, Yoshihiro; Adya, Ashok K. / XAFS analyses of molten metal fluorides.

In: Journal of Fluorine Chemistry, Vol. 130, No. 1, 01.2009, p. 53-60.

Research output: Contribution to journalArticle

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Matsuura, H, Watanabe, S, Akatsuka, H, Okamoto, Y & Adya, AK 2009, 'XAFS analyses of molten metal fluorides' Journal of Fluorine Chemistry, vol 130, no. 1, pp. 53-60. DOI: 10.1016/j.jfluchem.2008.07.012

XAFS analyses of molten metal fluorides. / Matsuura, Haruaki; Watanabe, Sou; Akatsuka, Hiroshi; Okamoto, Yoshihiro; Adya, Ashok K.

In: Journal of Fluorine Chemistry, Vol. 130, No. 1, 01.2009, p. 53-60.

Research output: Contribution to journalArticle

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AB - X-ray absorption fine structure studies of molten metal fluorides containing the materials related to nuclear engineering are intensively summarized. By using XAFS spectra data of divalent and trivalent cation metal fluorides in molten state which have been collected by authors’ group for a few years, local structure have been extracted and discussed systematically in conjunction with other spectroscopic studies and numerical calculations. In molten divalent fluorides, tetrahedral coordination of fluorides around a cation is predominant. In the case of pure molten trivalent fluorides, structure with more than 6-coordination has been suggested in some cases, but octahedral coordination structure is much stabilized at heavier rare earth metal fluorides. By mixing with alkali metal fluorides, it is a general trend that inter-ionic distances keep constant, but coordination number of fluorides decreases. In experimental chapter, all the details of sample preparation, furnace installation, X-ray optics setups and data analyses procedures are explained. Finally, future expectations of XAFS technique are also suggested.

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Matsuura H, Watanabe S, Akatsuka H, Okamoto Y, Adya AK. XAFS analyses of molten metal fluorides. Journal of Fluorine Chemistry. 2009 Jan;130(1):53-60. Available from, DOI: 10.1016/j.jfluchem.2008.07.012