催化作用
甲烷
化学
二氧化碳重整
化学工程
工作(物理)
蒸汽重整
动能
渲染(计算机图形)
物理化学
多孔性
无机化学
碳纤维
合成气
沮丧的刘易斯对
路易斯酸
多相催化
催化重整
热力学
计算化学
作者
Wenjie Guo,Wenbin Li,Jiyun Ren,Sai Zhang
标识
DOI:10.1002/anie.202521548
摘要
Abstract Achieving high CO 2 conversion with minimal reductant input is essential for enabling a sustainable carbon cycle. Dry reforming of methane (DRM) represents a key pathway toward this goal, yet it is typically limited by CH 4 reducibility (moles of CO 2 consumed per mole of CH 4 ) of 1 mol CO2 mol CH4 −1 , and temperatures >700 °C. These limitations arise from an inherent trade‐off between catalytic activity and CH 4 reducibility, imposed by thermodynamic and kinetic constraints. Herein, we report a catalyst comprising spatially isolated Rh atoms (Rh 1 ) and frustrated Lewis pairs (FLPs) on porous CeO 2 nanorods, which decouples the DRM process into two elemental steps: CO 2 reduction and CH 4 partial oxidation. This spatial separation enables simultaneous high activity and exceptional CH 4 reducibility by facilitating *O migration form FLPs (for CO 2 reduction and *O storage) to Rh 1 (for CH 4 partial oxidation). The optimized catalyst exhibits a CO production rate of 83.4 mol g Rh −1 h −1 at 450 °C, surpassing state‐of‐the‐art catalysts, while achieving a CH 4 reducibility of 2.54 mol CO2 mol CH4 −1 , significantly exceeding the conventional DRM limit. Furthermore, the catalyst demonstrates outstanding stability over 350 h. This work offers a robust strategy for overcoming classical trade‐off in DRM, rendering it a promising candidate for industrial application.
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