文献类型：期刊文献

英文题名：Ultrathin Hydrophobic Inorganic Membranes via Femtosecond Laser Engraving for Efficient and Stable Extraction in a Microseparator

作者：Nie, Mengxia[1];Ye, Guanghua[1];Song, Nan[1];Shi, Shudong[1];Qian, Gang[1];Duan, Xuezhi[1];Zhou, Xinggui[1];Yang, Zhirong[1];Zhang, Jing[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2022

卷号：61

期号：31

起止页码：11534

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20223412595600);WOS:【SCI-EXPANDED(收录号:WOS:000834234800001)】；

基金：? ACKNOWLEDGMENTS This work was financially supported by the National Natural Science Foundation of China (21991103, 21991104, 22008074, and 22008072) , the Natural Science Foundation of Shanghai (20ZR1415700) , and the China Postdoctoral Science Foundation (2020M671025, 2019TQ0093) . The authors thank Prof. Ya Cheng and Engineer Wei Chen from East China Normal University for the helpful discussion of femtosecond laser engraving.

语种：英文

外文关键词：Extraction - Femtosecond lasers - Gravitation - Hydrophobicity - Ketones - Membranes - Pore size

摘要：Miniaturization of separators is essential owing to the enhanced surface area and reduced diffusion distance. It is difficult to realize membrane-based countercurrent extraction in the microscale as surface forces dominate over gravity forces and a considerable pressure drop perturbs pressure control. Here, we report a new route for continuous and high-yield extraction in microchannel membrane contactors using inorganic membranes with collective effects of femtosecond laser engraving and hydrophobic self-assembly, resulting in similar extraction efficiencies as organic membranes but with a much wider operating range and better durability, owing to their uniform pore size at 10 mu m, hydrophobic feature, and model-guided pressure control. Compared to conventional devices, the lower flow capacity of the microseparator could be offset by reduction in "height equivalent to a theoretical plate ", resulting in potential orders of magnitude reduction in device volume. The microseparator was then integrated with a microreactor for continuous synthesis and separation of a highly explosive chemical, methyl ethyl ketone peroxide, from which high extraction efficiencies were obtained with the final product meeting industrial standard. This work provides an attractive alternative, inorganic membranes, to organic membranes in microscale separation with improved stability and a wider operating range.