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정해원,웬푸후이,왕명연,김상윤,신은우,Haewon Jung,Huy Nguyen-Phu,Mingyan Wang,Sang Yoon Kim,Eun Woo Shin 한국화학공학회 2023 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.61 No.3
In this study, we investigated the effect of the Ce<sub>x</sub>Zr<sub>1-x</sub>O<sub>2</sub> (CZ) addition onto Ni/Al<sub>2</sub>O<sub>3</sub> catalysts on the catalytic performance in methane steam reforming. In the reaction results, the CZ-added Ni/Al<sub>2</sub>O<sub>3</sub> catalyst showed higher CH<sub>4</sub> conversion and H<sub>2</sub> yield under the same reaction conditions than Ni/Al<sub>2</sub>O<sub>3</sub>. From the characterization data, the two catalysts had similar support porosity and Ni dispersion, confirming that the two properties could not determine the catalytic performance. However, the oxygen vacancy over the CZ-added Ni/Al<sub>2</sub>O<sub>3</sub> catalyst induced an efficient steam activation at low reaction temperatures, resulting in an increase in the catalytic activity and H<sub>2</sub> yield.