Covalent organic framework membrane reactor for boosting catalytic performance

Liping Zheng, Zhengqing Zhang, Zhuozhi Lai, Shijie Yin, Weipeng Xian, Qing-Wei Meng, Zhifeng Dai (), Yubing Xiong, Xiangju Meng, Shengqian Ma, Feng-Shou Xiao and Qi Sun ()
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Liping Zheng: Zhejiang Sci-Tech University
Zhengqing Zhang: Tiangong University
Zhuozhi Lai: Zhejiang University
Shijie Yin: Zhejiang Sci-Tech University
Weipeng Xian: Zhejiang University
Qing-Wei Meng: Zhejiang University
Zhifeng Dai: Zhejiang Sci-Tech University
Yubing Xiong: Zhejiang Sci-Tech University
Xiangju Meng: Zhejiang University
Shengqian Ma: University of North Texas
Feng-Shou Xiao: Zhejiang University
Qi Sun: Zhejiang University

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract 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.

Date: 2024
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DOI: 10.1038/s41467-024-51250-8

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