Effect of the ZrO2–Al2O3 solid solution on the performance of Ni/ZrO2–Al2O3 catalysts for CO2 methanation

The appropriate addition of Al 2 O 3 to form a ZrO 2 -Al 2 O 3 solid solution will weaken the Ni-ZrO 2 interaction and increase the concentration of basic sites and oxygen vacancies in the catalyst, resulting in better activation of CO 2 .