Cationic mixed pillared layer clays: Infrared and Mossbauer characteristics of the pillaring agents and pillared structures in Fe,Al and Cr,Al pillared montmorillonites

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22 Citations (Scopus)

Abstract

Pillared layer clays containing Fe,Al or Cr,Al mixed pillars were synthesized and characterized with mid and far FT-IR and 57Fe Mossbauer spectroscopies. Spectra of the pillaring ions and the pillared materials indicated that co-hydrolysis and co-pillaring occurred. Isomorphous substitution of either tetrahedral or octahedral Al in the Al13-Keggin ion did not take place. The layers of montmorillonite were propped apart by a mixture of [AlO4Al12(OH)24(H2O)12I7+ Keggin ions and hydrous iron oxide or hydrous chromium oxide, alternately.

Original languageEnglish
Pages (from-to)547-550
Number of pages4
JournalJournal of Molecular Structure
Volume410-411
DOIs
Publication statusPublished - Jan 1 1997

Keywords

  • Co-hydrolysis
  • Co-pillaring
  • Fe,Al or Cr,Al mixed pillars
  • Mid and far FT-IR and Fe Mossbauer spectroscopies
  • Pillared layer clay

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy
  • Organic Chemistry
  • Inorganic Chemistry

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