氨氧化
腈
催化作用
选择性
化学
氧化物
锰
无机化学
丙烯腈
材料科学
组合化学
有机化学
共聚物
聚合物
作者
Hai Wang,Qingzhi Luo,Liang Wang,Hui Yu,Yucai Qin,Lijuan Song,Feng‐Shou Xiao
出处
期刊:Chinese Journal of Catalysis
[China Science Publishing & Media Ltd.]
日期:2021-12-01
卷期号:42 (12): 2164-2172
被引量:11
标识
DOI:10.1016/s1872-2067(21)63803-2
摘要
The performances of heterogeneous catalysts can be effectively tuned by changing the catalyst structures. Here we report a controllable nitrile synthesis from alcohol ammoxidation, where the nitrile hydration side reaction could be efficiently prevented by changing the manganese oxide catalysts. α-Mn2O3 based catalysts are highly selective for nitrile synthesis, but MnO2-based catalysts including α, β, γ, and δ phases favour the amide production from tandem ammoxidation and hydration steps. Multiple structural, kinetic, and spectroscopic investigations reveal that water decomposition is hindered on α-Mn2O3, thus to switch off the nitrile hydration. In addition, the selectivity-control feature of manganese oxide catalysts is mainly related to their crystalline nature rather than oxide morphology, although the morphological issue is usually regarded as a crucial factor in many reactions.
科研通智能强力驱动
Strongly Powered by AbleSci AI