The reason why the activity of Ni/Al-2O-3 catalyst was promoted by addition CeO-2 was that a large amount of formate forms over Ni|CeO-2/Al-2O-3 catalyst.

• 添加 Ce O2 可通过在较低温度时形成较多的表面甲酸盐来提高 CO2 的甲烷化活性