Incorporation of Fe in the interlayer of Na-bentonite via treatment with FeCl3 in acetone

Andrea Komlósi, E. Kuzmann, N. Nagy, Z. Homonnay, Shiro Kubuki, József Kǒnya

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The effect of FeCl3 in acetonic medium on the structure of Na-bentonite was studied using X-ray diffraction (XRD), 57Fe Mössbauer spectroscopy, X-ray fluorescence spectroscopy and infrared spectroscopy to describe the structure of the bentonite before and after treatment. In the samples treated with FeCl3, an increase in the basal spacing was found by XRD, while a new magnetically split component assigned to Fe3+ incorporated within the interlayer regions of montmorillonite showed up in the low-temperature Mössbauer spectra. The Mössbauer parameters observed were close to those of Fe oxyhydroxides, suggesting the presence of some kind of nanoparticles. These results show that the treatment with acetonic FeCl3 solution is an effective method for introducing Fe into montmorillonite in the form of Fe3+ accommodated in the interlayer region. The treated samples proved to be efficient Lewis catalysts in the acylation of aldehydes (benzaldehyde and 4-OH-benzaldehyde) by acetic acid anhydride.

Original languageEnglish
Pages (from-to)89-95
Number of pages7
JournalClays and Clay Minerals
Volume55
Issue number1
DOIs
Publication statusPublished - Feb 2007

Fingerprint

Bentonite
benzaldehyde
bentonite
montmorillonite
Acetone
acetone
X-ray diffraction
X-ray fluorescence spectroscopy
acylation
fluorescence spectroscopy
anhydrides
infrared spectroscopy
nanoparticles
aldehyde
X-ray fluorescence
catalysts
acetic acid
aldehydes
X-ray spectroscopy
spectroscopy

Keywords

  • Bentonite
  • Clay
  • Infrared spectroscopy
  • Interlayer
  • Iron
  • Mössbauer
  • Spectroscopy
  • XRD
  • XRF

ASJC Scopus subject areas

  • Soil Science
  • Earth and Planetary Sciences (miscellaneous)
  • Geochemistry and Petrology
  • Water Science and Technology

Cite this

Incorporation of Fe in the interlayer of Na-bentonite via treatment with FeCl3 in acetone. / Komlósi, Andrea; Kuzmann, E.; Nagy, N.; Homonnay, Z.; Kubuki, Shiro; Kǒnya, József.

In: Clays and Clay Minerals, Vol. 55, No. 1, 02.2007, p. 89-95.

Research output: Contribution to journalArticle

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