Ultra-high flux catalytic membrane reactors based on coagulation-flocculation mechanism for selective catalytic

催化作用 选择性 化学工程 Zeta电位 化学 凝结 絮凝作用 焊剂(冶金) 材料科学 纳米技术 有机化学 纳米颗粒 心理学 生物化学 精神科 工程类
作者
Mingwei Yuan,Jie Liu,Yahui Zhu,Bingzhen Zhang,Weiming Xiao,Shuhua Wang,Shunli Shi,Chao Chen
出处
期刊:Journal of Membrane Science [Elsevier BV]
卷期号:690: 122244-122244 被引量:2
标识
DOI:10.1016/j.memsci.2023.122244
摘要

Catalytic membrane reactors (CMRs), combination of catalytic industry and membrane technology, facilitates manufacture efficiency in massive practical and industrial applications. However, the balance of membrane flux and catalytic performance represents enormous challenges. Herin, we propose the coagulation-flocculation strategy for piloting the Zeta potential on CMR with the flow-reaction channel by modulating the filler within the mixed matrix membrane. Comprehensive characterizations demonstrate that the modulation of zeta potential in the CMR triggers the regulation of channel environment (interconnected macro-pore network structure) with the formation of more catalytic sites. Both the experimental outcomes and reaction mechanism explicitly validate the facilitating role of channel environment in boosting the enrichment of reactants and selectivity for reactants, thereby substantially stimulating the reactants activation for the subsequent catalytic procedure more feasibly. The CMR presents superior performance in the catalytic discoloration of contaminations (the flux record-value of 8664 L m−2 h−1, catalytic efficiency: 98.5 %, and robust stability: 15 cycles in Methylene Blue (MB) tests, and brilliant selectivity for various reactants with charge selectivity and size selectivity). This controllable adjustment of the membrane structure based on the coagulation-flocculation mechanism shines tactic for design high-flux, high-efficiency CMR for industrial preparation.
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