Covalent organic framework membrane reactor for boosting catalytic performance

Membrane reactors are known for their efficiency and superior operability compared to traditional batch processes, but their limited diversity poses challenges in meeting various reaction requirements. Herein, we leverage the molecular tunability of covalent organic frameworks (COFs) to broaden thei...

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Published in:Nature communications Vol. 15; no. 1; pp. 6837 - 10
Main Authors: Zheng, Liping, Zhang, Zhengqing, Lai, Zhuozhi, Yin, Shijie, Xian, Weipeng, Meng, Qing-Wei, Dai, Zhifeng, Xiong, Yubing, Meng, Xiangju, Ma, Shengqian, Xiao, Feng-Shou, Sun, Qi
Format: Journal Article
Language:English
Published: London Nature Publishing Group UK 09.08.2024
Nature Publishing Group
Nature Portfolio
Subjects:
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639/301/299
639/301/923/1028
639/638/298/923/1028
Alternative energy sources
Batch processes
Batch processing
Catalysts
Catalytic converters
Covalence
Humanities and Social Sciences
Membrane reactors
Membranes
multidisciplinary
Performance enhancement
Reactors
Room temperature
Science
Science (multidisciplinary)
Temperature requirements
ISSN:2041-1723, 2041-1723
Online Access:Get full text
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Summary:Membrane reactors are known for their efficiency and superior operability compared to traditional batch processes, but their limited diversity poses challenges in meeting various reaction requirements. Herein, we leverage the molecular tunability of covalent organic frameworks (COFs) to broaden their applicability in membrane reactors. Our COF membrane demonstrates an exceptional ability to achieve complete conversion in just 0.63 s at room temperature—a benchmark in efficiency for Knoevenagel condensation. This performance significantly surpasses that of the corresponding homogeneous catalyst and COF powder by factors of 176 and 375 in turnover frequency, respectively. The enhanced concentration of reactants and the rapid removal of generated water within the membrane greatly accelerate the reaction, reducing the apparent activation energy. Consequently, this membrane reactor enables reactions that are unattainable using both COF powders and homogeneous catalysts. Considering the versatility, our findings highlight the substantial promise of COF-based membrane reactors in organic transformations. Membrane reactors are efficient alternatives to traditional bath process, yet their limited diversity challenges their applicability to various reaction requirements. Here, the authors report covalent organic framework membrane reactors applied to the Knoevenagel condensation with enhanced performance as compared to homogeneous catalysts.
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ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-024-51250-8