Effect of FeCl3 and acetone on the structure of Na-montmorillonite studied by Mössbauer and XRD measurements

Andrea Komlósi, Erno Kuzmann, Zoltán Homonnay, Noémi M. Nagy, Shiro Kubuki, József Kónya

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6 Citations (Scopus)

Abstract

57Fe Mössbauer spectroscopy, X-ray diffraction, X-ray fluorescence spectroscopy and infrared spectroscopy were used to study the effect of FeCl3 and acetone on the structure of a Na-bentonite. XRD indicated the incorporation of Fe3+ ions into the interlayer space since the basal lattice spacing of montmorillonite increased to 1.6 from 1.24 nm after treatment with FeCl3 dissolved in acetone. Interlayer Na + ions could be exchanged to Fe3+. Magnetically split Mössbauer subspectra with internal magnetic fields 41 and 46 T at 74 K, were associated with two main Fe3+ microenvironments within the interlayer regions. The resultant Fe-montmorillonite was successfully applied as a catalyst in the preparation of 1,1-diacetates from aromatic aldehydes and acetic acid anhydride.

Original languageEnglish
Pages (from-to)643-649
Number of pages7
JournalHyperfine Interactions
Volume166
Issue number1-4
DOIs
Publication statusPublished - Nov 1 2005

Keywords

  • Bentonite
  • Montmorillonite
  • Mössbauer spectroscopy
  • XRD

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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