Effect of CeO2 morphologies on CO2 conversion to CO via revers water gas shift reaction

Amin Hassani Moghaddam, Robert Mucsi, András Sápi

University of Szeged

Carbon dioxide is an abundant carbon feedstock, and there exists a sustainable interest in methods for its utilization. Catalytic reaction is an efficient and economic technology to eliminate CO2.The CeO2 with different shapes including hollow sphere, nanorods, two types of mesoporous were prepared with different methodologies (hydrothermal, solgel, and impregnation) and applied to support Cu particles. The obtained samples were tested for the reverse water-gas shift (RWGS) reaction. Under the reaction conditions, V(H2): V (CO2) = 4:1. In order to reveal the key factors affecting the catalytic performance, the physicochemical properties of the catalysts were analyzed by XRD, BET, SEM, TEM, and H2-TPR techniques. the Cu/CeO2-hollow sphere sample exhibited the best catalytic performance among the as-prepared catalyst. It is owing to CeO2-hollow sphere catalyst have largest surface area, pore size, and pore volume which are vital for CO2 catalytic reaction.



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