Mixed-metal pillared layer clays and their pillaring precursors

I. Pálinkó, Árpád Molnár, János B. Nagy, Jean Cristoph Bertrand, K. Lázár, J. Valyon, I. Kiricsi

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Mixed-metal pillared layer clays (Fe,Al-PILCs and Cr,Al-PILCs) of various compositions and the pillaring precursors have been prepared and characterised with a combination of chemical and instrumental methods. Chemical analysis data, IR, 57Mössbauer and 27Al NMR spectroscopic measurements on the precipitated pillaring precursors and comparison of redox behaviour [temperature-programmed reduction (TPR) results and 57Fe Mössbauer measurements on the heat-treated and the reduced samples] of the ion-exchanged and Al-pillared and mixed-metal pillared clays revealed that isomorphous substitution of A1 for Fe or Cr did not occur in either the tetrahedral or the octahedral positions. Heat treatment, however, resulted in mixed-metal pillared clays which were active in both acid-catalysed and redox transformations.

Original languageEnglish
Pages (from-to)1591-1599
Number of pages9
JournalJournal of the Chemical Society - Faraday Transactions
Volume93
Issue number8
Publication statusPublished - Apr 21 1997

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clays
Metals
metals
Chemical analysis
chemical analysis
heat treatment
Substitution reactions
Heat treatment
Nuclear magnetic resonance
Ions
substitutes
heat
nuclear magnetic resonance
acids
Acids
clay
ions
Temperature
temperature
Oxidation-Reduction

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Mixed-metal pillared layer clays and their pillaring precursors. / Pálinkó, I.; Molnár, Árpád; Nagy, János B.; Bertrand, Jean Cristoph; Lázár, K.; Valyon, J.; Kiricsi, I.

In: Journal of the Chemical Society - Faraday Transactions, Vol. 93, No. 8, 21.04.1997, p. 1591-1599.

Research output: Contribution to journalArticle

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AU - Valyon, J.

AU - Kiricsi, I.

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