双金属片
催化作用
热解
材料科学
合金
金属有机骨架
化学工程
X射线光电子能谱
金属
多相催化
拉曼光谱
无机化学
化学
有机化学
冶金
吸附
工程类
物理
光学
作者
Xinhui Sun,Yanjie Chen,Mengmeng Ji,Weiya Zhang,Zhuo Sun,W. K. Chu,Xin Wang
标识
DOI:10.1016/j.apsusc.2023.157353
摘要
Developing efficient bimetallic Ni/Zn metal organic frameworks (MOFs) derived Ni3ZnC0.7 alloy catalyst for cyclization reactions is highly anticipated. Bimetallic Ni/Zn-PTA MOFs with flower-like microspheres morphology was synthesized by using a facile hydrothermal method and used as a precursor for preparation of the catalyst. Then, a ZnO supported Ni-Ni3ZnC0.7 incorporated carbon catalyst (Ni-Ni3ZnC0.7/ZnO-C) was obtained by deriving from the Ni/Zn-PTA MOFs through one-step pyrolysis. The developed Ni-Ni3ZnC0.7/ZnO-C catalyst was used as a recoverable heterogeneous catalyst for synthesis of 2-arylbenzimidazoles by cyclization reaction of phenylmethanamines and 2-nitroanilines in good yields. Various characterizations (e.g. SEM/EDX, XRD, TEM, FT-IR, XPS and Raman) revealed that the catalyst exhibited good performance for cyclization reaction, which are ascribed to particular hierarchical structure, as well as synergistic effect between Ni and Ni3ZnC0.7. As a result, the Ni-Ni3ZnC0.7/ZnO-C catalyst showed excellent stability and activity for the condensation cyclization reaction. This bimetallic MOFs-derived Ni-Ni3ZnC0.7 catalyst opens up a potential way for fabricating other Carbon supported alloy catalysts in heterogeneous catalysis reactions.
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