Nanostructured catalysts derived from nanoparticles of iron and titanium oxides supported on the matrices of hydrotalcite-like anionic clays (LDHs) have been obtained and tested as new catalysts in the process of oxidative decomposition of chlorobenzene. A simple synthesis method based on the LDHs “memory effect” has been used to tune the synthesis procedure of Fe - Ti oxides - anionic clay nanostructures. XRD analysis is used to describe the structural characteristics of the studied samples. TEM analysis shows that on the typical LDH particles (average size equal to 110 nm) smaller nanoparticles (average size equal to 20 nm) are supported. XPS analysis gives information about the nature of the supporting nanoparticles pointing out the presence of mainly Fe₂O₃ and TiO₂ on the surface of the tested catalysts. A complete oxidation is reached around 340 °C and chlorine was the only chlorinated organic product.

Acknowledgments:  This research work was supported by the PNCDI II contracts NATOEPA 71-020 / 2007 and the LaCaFiA Capacitati 134 / 2007.

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