Lattice-Confined single cobalt atom in ZrO2 for propane non-oxidative dehydrogenation

作者：Bohan Feng, Yicong Bao, Yuechang Wei, Dong Li, Jing Xiong, Zhen Zhao, Yunpeng Liu, Weiyu Song, Chunming Xu, Jian Liu · 发表于：Chemical Engineering Science · 年份：2025 · DOI：10.1016/j.ces.2025.121349 · 被引用次数：9 · 研究领域：Catalysis and Oxidation Reactions、Catalytic Processes in Materials Science、Oxidative Organic Chemistry Reactions

The single atom sites have been identified as the optimal structure for structure-insensitive alkane dehydrogenation reaction. However, single atoms with high surface energy suffer from sintering deactivation due to high-temperature conditions. Herein, we report the single cobalt (Co) atoms confined by the ZrO 2 lattice for the propane non-oxidative dehydrogenation (PDH) reaction. Compared with surface Co species, the lattice-confined effect of ZrO 2 basement prevents the structural transformation of single Co atoms and enriches the active site of Co-O-Zr. The Co single-atom catalyst shows remarkable activity (1.58 mmol g -1 h −1 ) and achieves significantly more substantial regeneration stability than the catalysts with surface CoO x species. The research on lattice-confined Co-ZrO 2 catalysts provides a novel cognition for the lattice-confined effect and gives opportunities for the application of thermodynamically stable single-atom catalysts in the future.