微型反应器
催化作用
膜
陶瓷
化学工程
沸石咪唑盐骨架
陶瓷膜
材料科学
热解
膜反应器
传质
化学
纳米技术
金属有机骨架
色谱法
有机化学
复合材料
吸附
生物化学
工程类
作者
Zhihao Guo,Yan Du,Jiuxuan Zhang,Zhenchen Tang,Hong Jiang,Rizhi Chen
标识
DOI:10.1016/j.ces.2024.119710
摘要
Multi-channel ceramic catalytic membrane microreactors are highly efficient reactors, combining reaction and separation in a single unit. However, the synthesis of multi-channel ceramic catalytic membranes with well-distributed active components keeps a great challenge. Here, we report a flow-induced layer-by-layer assembly of zeolitic imidazolate framework-67 (ZIF-67) followed by pyrolysis that generates highly active and well-distributed Co@N-doped carbon (Co@CN) catalytic materials inside the ceramic membrane (CM) pores, which creates abundant microreactors with enhanced mass transfer efficiency. The pyrolysis temperature, concentration of Co2+, and number of solution cycles are determined as pivotal factors on the microstructures and catalytic performance of the catalytic membranes. The catalytic membrane, [email protected], exhibits outstanding performance in the reduction of p-nitrophenol to p-aminophenol, achieving full conversion within 25 min and maintaining stability over 5 h of continuous operation. The developed multi-channel ceramic catalytic membrane microreactors can be readily scaled up, and have great application potentials in heterogeneous catalysis.
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