Collect. Czech. Chem. Commun. 1998, 63, 741-748

Influence of pH on Phosphate Intercalation in Zinc-Aluminum Layered Double Hydroxide

Mohamed Badreddinea, Ahmed Legrourib, Allal Barrouga, André De Royc and Jean-Pierre Bessec

a Laboratoire de Chimie-Physique, Faculté des Sciences Semlalia, Université Cadi Ayyad, B.P. S15, Marrakech 40001, Morocco
b School of Science and Engineering, Al Akhawayn University, B.P. 104, Ifrane 53000, Morocco
c Laboratoire des Matériaux Inorganiques, UPRES-A 6002, Université Blaise Pascal (Clermont-Ferrand II), 63177 Aubière-Cedex, France


The exchange of chloride ion by phosphate ions in [Zn-Al-Cl] layered double hydroxide was investigated using X-ray diffraction and infrared spectroscopy. The effects of the pH of the solution containing the phosphate ions on the ion exchange was studied. The best sample in terms of crystallinity, was obtained at pH 8. This sample was further characterized by scanning electron microscopy and microanalysis.

Keywords: Layered double hydroxides; Ion exchange; Hydrotalcite phase; Phosphates.