“…Currently, mixed oxides can be obtained by several synthesis methods such as co-precipitation (Kolthoff, 1932), solid-state (Menon and Delmon, 1999), sol-gel (Ko, 1999), freeze-dried (Vie et al, 2004), and hydrothermal (Rodemerck and Linke, 2009). Despite the recognized effectiveness of these synthesis methods, preparation itself of layered materials as precursors of mixed oxides has been also recognized as a promising method (Braterman et al, 2004).…”