The physicochemical properties of the synthesized catalysts were studied by various characterization techniques such as differential thermal analysis/thermogravimetric analysis (Perkin Elmer Pyris 1), N2 adsorptionedesorption (Micromeritics, ASAP 2020), X-ray diffraction (Bruker D8 X-ray diffractometer equipped with a Cu anode), temperature programmed desorption of CO2 (TPDRO1100 MS, CE Instruments) and energy dispersive X-rays (JSM-7610F).