In more detail, the Sabatier principle states that an ideal catalyst binds to the reactant at an intermediate strength which is neither too weak nor too strong. Based on empirical observations, it was found that if the bonds between the reactants and the catalyst are too weak or too strong, the reactants or the products cannot adsorb or desorb, respectively, from the catalytic surface, which inhibits the progress of the reaction 2 . Accordingly, a balance between the desorption and adsorption energy is required for efficient and ideal catalysts.