Modified montmorillonites as potential NO decomposition catalysts: Characterization by temperature-programmed reduction |
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| Authors: | J. Valyon, I. Pá linkó I. Kiricsi |
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| Affiliation: | (1) Central Research Institute for Chemistry of the Hungarian Academy of Sciences, P.O. Box 17, H-1525 Budapest, Hungary;(2) Department of Organic Chemistry, József Attila University, Dóm tér 8, H-6720 Szeged, Hungary;(3) Applied Chemistry Department, József Attila University, Rerrich B. tér 1, H-6720 Szeged, Hungary |
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| Abstract: | Na-montmorillonite has been modified by ion exchange of simple Fe3+ or Keggintype cations obtainedvia the partial hydrolysis of AlCl3 or the co-hydrolysis of AlCl3+FeCl2 mixture, in order to prepare catalysts for NO decomposition. Temperature-programmed reduction, the most important characterizing method in this work, revealed that isomorphous substitution of iron for aluminium was not feasible, instead, co-hydrolysis and co-pillaring occurred, resulting in Fe,Al mixed pillared clays. |
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| Keywords: | Montmorillonite ion exchange pillaring temperature-programmed reduction |
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