Changes in the Crystal Lattice Parameters of Montmorillonite during Its Modification by Cobalt and Aluminum Cations

Resumo

The effect the modification (pillarization) of montmorillonite clays from different locations has on the crystallographic lattice parameters of montmorillonite is determined. It is revealed through ultrahigh resolution transmission electron microscopy and analyzing microdiffraction patterns that pillarization raises the distance between montmorillonite structural units to 2.2 nm, while the intracrystal distance between the atoms grows by 0.4 nm. The catalytic activity of specimens in the oxidation reaction between organic dyes and hydrogen peroxide is enhanced 2–3 times.