Catalytic and Physical Properties Study on NiO and Pr[sub 2]O[sub 3]-NiO Based Catalyst for CO[sub 2]∕H[sub 2] Methanation

The catalytic behaviour of undoped NiO and doped Pr2O3‐NiO catalysts toward CO2/H2 methanation reaction has been performed. The result showed 100% conversion of CO2 to CH4 in the presence of H2 for doped 60Ni‐40Pr at 300 °C, while for undoped NiO, there was only 40% of CO2/H2 methanation at the same temperature. The result corresponds to the presence of higher specific surface area of 60Ni‐40Pr compared to undoped NiO catalyst. The XRD analysis showed that this catalyst has some degree of amorphous properties and the existence of individual phases of cubic NiO and cubic Pr2O3, which serves more active site for CO2/H2 methanation. In addition, complimentary results obtained from SEM showed the present of homogeneous smaller particle size, which support the good performance of 60Ni‐40Pr catalyst towards CO2/H2 methanation.