Efficient Hydrogen Production from Ethylene Glycol Steam Reforming Catalyzed by Na-Promoted Pt/γ-Mo 2 N

作者：Xuan Liang, Zirui Gao, Xingjie Peng, Maolin Wang, Maolin Wang, Xu Yao, Jie Zhang, Shuheng Tian, Chengyu Li, Xuetao Qin, Rongli Mi, Zhaohua Wang, Wu Zhou, Meng Wang, Meng Wang, Ding Ma · 发表于：Journal of the American Chemical Society · 年份：2025 · DOI：10.1021/jacs.5c04401 · 被引用次数：7 · 研究领域：Catalysts for Methane Reforming、Catalysis and Hydrodesulfurization Studies、Catalytic Processes in Materials Science

Ethylene glycol (EG) derived from biomass and plastic wastes can serve as a sustainable H 2 resource through steam reforming (HOCH 2 CH 2 OH + 2H 2 O ⇄ 5H 2 + 2CO 2 ). However, achieving high activity in H 2 production with good selectivity toward CO 2 under mild conditions poses a challenge. A thoughtful understanding of the active sites that accelerate the cleavage of the C–C bond rather than the C–O bond and the activation of the water molecule is still lacking. In this study, we developed a PtNa/γ-Mo 2 N catalyst that efficiently enables hydrogen production from ethylene glycol steam reforming (EGSR) reactions. This catalyst achieved outstanding H 2 productivity, reaching 6000 mol H2 ·mol Pt –1 ·h –1 at 250 °C under 10 bar with high CO 2 selectivity (89%) and low CO selectivity (1%) in carbon-containing products. Comprehensive characterizations revealed the crucial role of the interface between highly dispersed Pt species and Mo 2 N in activating ethylene glycol and water. Additionally, sodium (Na) was found to block acidic sites, preventing the formation of side products from C–O bond cleavage, and to modulate Pt sites, enhancing the reforming process by accelerating the water gas shift reaction.