(44d) CO2 Dissociation over Ni with Doped Ceria Catalysts

The dissociation of CO_2­ to CO is a critical step of the chemical looping process that utilizes two major greenhouse gases, CO₂ and methane, with the solar energy. This study focuses on using temperature programmed reduction with various hydrogen/methane mixes followed by a pulse CO₂ dissociation reaction to characterize and evaluate the synthesized catalysts. The pulse reaction activity and stability of catalysts are summarized and compared. There are different Ni loadings of Ni-CeZrO₂ used for the study of activity, capacity, and stability for CO₂ dissociation. Characterization of the catalysts includes surface area, oxygen vacancy, and catalyst composition measurements.