FeNi3/NiFe-Mixed Metal Oxide Heterostructured Nanosheets for Catalytic Nitro-Amination

FeNi3/NiFe-Mixed Metal Oxide Heterostructured Nanosheets for Catalytic Nitro-Amination
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用于催化硝基胺化的 FeNi3/NiFe 混合金属氧化物异质结构纳米片

DOI:
10.1021/acsanm.1c00978
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发表时间:
2021-07
影响因子:
5.9
通讯作者:
Qingsheng Wu
Qingsheng Wu
中科院分区:
材料科学2区
文献类型:
--
作者:
D;an Wu;Jiaqi Ran;Shuai Zhong;Ming Wen;Jian Zhou;Quanjing Zhu;Qingsheng Wu

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通过共沉淀-相变过程构建了二维异质结构的FeNi3/NiFe-混合金属氧化物多孔纳米催化剂,其中由拓扑定向转化产生的大量界面和微孔暴露出丰富的活性中心,从而提高了催化活性。同时,由于金属与金属氧化物之间的强相互作用,在部分还原条件下,均匀的FeNi3相可以稳定地固定在NiFe-MMO纳米片上。在所设计的FeNi3/NiFe-MMO纳米复合材料中,具有良好的电荷转移特性的FeNi3与NiFe-MMO载体之间的协同作用使其具有良好的硝胺化反应催化性能,特别是对对硝基苯酚的胺化反应。NiFe-MMO载体对对-硝基芳香族化合物中的−-NO2具有选择性吸附作用。反应速率常数高达0.08123 S~(-1),反应15个循环后没有明显的性能退化。本工作为催化硝胺化反应提供了一条有效途径。
The two-dimensional heterostructured FeNi3/NiFe-mixed metal oxide porous nanocatalyst has been constructed through the coprecipitation-phase-transformation process, in which a large amount of interfaces and micropores caused by the topotactic transformation can expose abundant active sites, thus promoting catalytic activity. Simultaneously, by virtue of the strong interaction between metals and metal oxides derived from thein situpartial reduction, the uniform FeNi3phases can be stably fixed on NiFe-MMO nanosheets. In such a designed FeNi3/NiFe-MMO nanocomposite, the synergistic effect between FeNi3with excellent charge-transfer characteristics and the NiFe-MMO support with a selective adsorption of the −NO2group inp-nitroaromatic compounds makes it have excellent catalytic performance of the nitro-amination reaction, especially for the amination ofp-nitrophenol. The reaction rate constantkis as high as 0.08123 s–1, and there is no obvious performance degradation after 15 cycles of the reaction. This work provides a valid pathway for catalyzing the nitro-amination reaction.
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