The Promotion Effect of Rare Earth Oxides on the Hydrogenation of Carbon Monoxide over Rh–Al2O3Catalyst

The addition of Dy2O3, Nd2O3, Yb2O3, La2O3, or Gd2O3 to the Rh–Al2O3 catalyst enhanced the activity of the hydrogenation of CO to methane. There was the linear relationship between the carbon skeleton propagation of the hydrocarbons formed and the basicity of the rare earth oxides.