Thermogravimetric investigation: Solid-state ion-exchange procedure of Cu2+, Co2+, Ni2+ and Fe2+ ions into montmorillonite

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Abstract

Ion-exchange of transition metal ions into montmorillonite was investigated using two different ion-exchange procedures. Performing ion-exchange from aqueous solution of the respective metal ion leads to material possessing measurable Brønsted acidity, while the solid-state exchange materials show predominantly Lewis acidity. Measurements by means of a derivatograph allowed us to construct a feasible reaction mechanism for solid-state ion exchange. Satisfactory correlation was found between the results calculated from the reaction steps assumed and the measurements by means of a derivatograph.

Original languageEnglish
Pages (from-to)399-406
Number of pages8
JournalJournal of thermal analysis
Volume47
Issue number2
DOIs
Publication statusPublished - Aug 1996

Keywords

  • Ion-exchange procedure
  • Montmorillonite
  • TG

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Engineering(all)

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