Collect. Czech. Chem. Commun. 2005, 70, 259-268

Intercalation of Tartrazine Into ZnAl and MgAl Layered Double Hydroxides

Ludvík Beneš*, Klára Melánová, Vítězslav Zima and Jan Svoboda

Joint Laboratory of Solid State Chemistry of the Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic and University of Pardubice, Studentská 84, 532 10 Pardubice, Czech Republic


The intercalates of Tartrazine Acid Yellow were prepared by heating [Zn0.67Al0.33(OH)2]- (CO3)0.165·0.5H2O or [Mg0.70Al0.30(OH)2](CO3)0.15·0.5H2O with a solution of an acid form of Tartrazine in an open reaction vessel or by stirring the powdered calcined hydrotalcites with a Tartrazine solution at room temperature. The intercalates were characterized by chemical and thermal analysis, X-ray powder diffraction and UV-VIS spectroscopy. The intercalates prepared by stirring the calcined host powders have worse crystallinity than those prepared by ion exchange. A possible arrangement of the Tartrazine anions in the intercalates was suggested on the basis of their chemical compositions and interlayer distances, taking into account van der Waals dimensions of the guest anions and assuming that the structure of the host layers is not changed during the intercalation process.

Keywords: Hydrotalcite-like compounds; Hydrotalcites; Intercalations; Intercalates; Dyes; X-ray powder diffraction; Zinc; Aluminium; Magnesium; ZnAl-CO3; MgAl-CO3; Solid-state chemistry.

References: 18 live references.