Photothermal Steering of the CH4─CO2 Coupling Pathwayand Coke-Suppression Mechanism by Niδ+─Ov─AlInterfacial Sites
Photothermal Steering of the CH4─CO2 Coupling Pathwayand Coke-Suppression Mechanism by Niδ+─Ov─AlInterfacial Sites
研究概述
通过碱刻蚀在NiMgAl催化剂上构筑Niδ+–氧空位–Al界面位点，改善Ni分散并促进光生电荷分离和活性氧生成，使CH4/CO2更易形成CHxO*中间体。600 ℃光热干重整中，相比对照转化速率提高，积碳速率由0.57降至0.12 g/h。
谱图与表征信息
FIGURE 3 Fine electronic and local structure of Niδ+ sites in the catalysts: (a) Normalized Ni K-edge XANES spectra, (b) fourier-transformed Ni K-edge EXAFS spectra, and (c–f) WB-EXAFS contour plots of (c) NiMgAl-A, (d) NiMgAl, (e) Ni foil, and (f) NiO reference.