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XANES investigation of co-precipitated Fe and Cr fluorides catalytically active in heterogeneous dehydrochlorination

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Abstract

In this X-ray absorption near-edge structure (XANES) study we focused our interest on co-precipitated Fe and Cr fluorides. Compounds with a low Cr content are catalytically active in the dehydrochlorination of 1,1,1-trichloroethane. XANES reveals for these samples an incorporation of a modified CrF3-x(OH)x pyrochlore structure into the β-FeF3 host lattice and an electron-deficient Cr 3d orbital, which may act as a Lewis acid site in the catalytic process.

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Authors and Affiliations

  1. Humboldt-Universität zu Berlin, Institut für Chemie, Hessische Strasse 1-2, D-10115, Berlin, Germany

    O. Böse, B. Adamczyk, K. Fiedler & E. Kemnitz

  2. Bundesanstalt für Materialforschung und -prüfung, Labor VIII.23, D-12200, Berlin, Germany

    O. Böse

Authors
  1. O. Böse
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  2. B. Adamczyk
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  3. K. Fiedler
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  4. E. Kemnitz
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Böse, O., Adamczyk, B., Fiedler, K. et al. XANES investigation of co-precipitated Fe and Cr fluorides catalytically active in heterogeneous dehydrochlorination. Catalysis Letters 54, 211–216 (1998). https://doi.org/10.1023/A:1019081401017

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  • DOI: https://doi.org/10.1023/A:1019081401017

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