催化作用
双金属片
介孔材料
X射线光电子能谱
氧化还原
分子筛
吸附
化学
产量(工程)
无机化学
化学工程
材料科学
有机化学
冶金
工程类
作者
Yinian Zhu,Luyao Jin,Yanghui Wang,Bin Hu,Jiaying Li,Bo Hu,Xuesong Liu
标识
DOI:10.1016/j.mcat.2023.113649
摘要
In this study, Cu, Fe/SBA-15 catalysts were prepared by impregnation method, and a series of characterization were carried out. XRD, physical adsorption and TEM results showed that SBA-15 molecular sieve has a highly ordered two-dimensional hexagonal mesoporous structure, and the loading of active components does not significantly destroy the ordered mesoporous structure of SBA-15. The catalyst with Cu: Fe=2:1 showed the best catalytic performance, and the oxidation yield of phenylcarbinol reached 54 % at 90 °C with DMSO as solvent and TBHP as oxidant for 3 h. Physical and chemical analysis by XPS, DR. UV–vis and H2-TPR showed that Cu-Fe synergistic effect can significantly improve the catalytic performance, the highly dispersed Cu species in bimetallic catalysts were more concentrated on the catalyst surface, which improved the redox performance and electron transfer ability of the catalysts. The above characterization results provide strong evidence to explain the difference of catalytic activity.
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