Ion Exchange Properties of α-Zirconium Phosphate Modified by a Process of Intercalation/De-Intercalation with Monoamines

  • G. Alberti
  • U. Costantino
  • F. Marmottini
  • R. Vivani
  • C. Valentini

Abstract

Colloidal dispersions of delaminated zirconium phosphate, obtained as a result of intercalation of some amines, have been sonicated and then put under a spray-drying or freeze-drying treatment. Highly dispersed and hydrated powders of zirconium phosphate have been obtained. The water content of these new phases ranges from 1.2 to 3.5 mol/mol of Zr, as the relative humidity rises from 5 to 90%, correspondingly the interlayer distance changes from 8.0 to 10.5 A. The ion exchange properties of polyhydrated zirconium phosphates towards Na+, K+, Cs+ and Ba2+ cations have been investigated and compared with those of α-Zr(HPO4)2.H2O. Owing to the large interlayer distance, these polyhydrated phases exhibit good ion exchange and intercalation properties expecially towards large cationic or neutral species.

Keywords

Methylene Blue Colloidal Dispersion Interlayer Distance Zirconium Phosphate Phosphate Powder 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Elsevier Science Publisher Ltd 1990

Authors and Affiliations

  • G. Alberti
    • 1
  • U. Costantino
    • 1
  • F. Marmottini
    • 1
  • R. Vivani
    • 1
  • C. Valentini
    • 2
  1. 1.Department of ChemistryUniversity of PerugiaPerugiaItaly
  2. 2.ENIRICERCHE S.p.A.Monterotondo (Rome)Italy

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