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.
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Shiro Kubuki is on leave from Ube National College of Technology, Japan.
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Komlósi, A., Kuzmann, E., Homonnay, Z. et al. Effect of FeCl3 and acetone on the structure of Na–montmorillonite studied by Mössbauer and XRD measurements. Hyperfine Interact 166, 643–649 (2005). https://doi.org/10.1007/s10751-006-9335-0
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DOI: https://doi.org/10.1007/s10751-006-9335-0