Jung, Min Gie Seo, Ji Eun Ha, Heon Phil Lee, Hwajun Lee, Jung-Hyun Kwon, Dong Wook 2025-01-13T09:30:04Z 2025-01-13T09:30:04Z 2025-01-09 2025-02 1385-8947 https://pubs.kist.re.kr/handle/201004/151545 Spinel-type oxides based on transition metals are a specific class of catalysts that have recently been highly regarded as active sites for enhancing N2O direct decomposition. The catalytic performance of CoxCey binary spinel catalysts was compared to that of single Co and Ce oxide catalysts. The Co2Ce1 binary spinel catalyst exhibited superior N2O decomposition performance, achieving over 95 % N2O conversion at GHSV of 60,000 h？1 and 300 °C. Physicochemical analysis revealed that the Co2Ce1 catalyst possessed the smallest particle size and the largest surface area, with Co occupying octahedral sites of Co spinel. Additionally, Ce weakened the Co？O bond and introduced abundant surface oxygen vacancies, basicity, and facilitated Co2+ and Ce3+ interactions on the catalyst surface. Furthermore, the number of Lewis acid sites emerged as a critical factor in N2O decomposition. The Co2Ce1 catalyst demonstrated promising potential for efficient N2O decomposition at lower temperatures. English Elsevier BV Unveiling the tailorable catalytic surface properties of ceria-promoted cobalt binary spinel catalysts for efficient N2O direct decomposition Article 10.1016/j.cej.2025.159305 1 Chemical Engineering Journal, v.505 Chemical Engineering Journal 505 N scie scopus 001410191000001 Engineering, Environmental Engineering, Chemical Engineering Article REDOX PROPERTIES OXIDE REDUCTION PERFORMANCE ADSORPTION OXIDATION METHANE NOX CE CO Cerium Spinel Reducibility N 2 O decomposition Cobalt