Sorption of Cu(II) from Ammoniacal Solutions into α-Zirconium(IV) bismonohydrogenphosphate (α-ZrP) Intercalated with Butylamine

Abstract

Studies on the sorption of tetraamminecopper(II) complex from ammoniacal solutions of various compositions into α-ZrP modified with butylamine were performed in the temperature range of 40 to 80°C. The experimental results were discussed in terms of first-order reaction kinetics. The activation energy of sorption of Cu(II) into modified α-ZrP was found to be equal to 46.1 ± 3 kJ/mol. The effects of the concentrations of ammonia and ammonium sulfate were also examined. Pure and modified α-ZrP loaded with tetraamminecopper(II) were characterized by means of elemental analysis, X-ray diffractometry, FTIR, and Raman spectroscopy. Copper was recovered quantitatively from pure and modified α-ZrP at room temperature using 0.5 M HCl solution.

Keywords:

• Copper(II)
• ammine complexes
• sorption
• α-zirconium(IV) monohydrogenphosphate(V)
• intercalation
• butylamine

ACKNOWLEDGMENTS

Professor Mieczysław Mączka at the Institute of Low Temperature and Structure Research, Polish Academy of Sciences, is kindly acknowledged for the helpful comments and registration of the Raman spectra.