文献类型：期刊文献

英文题名：Precise molecular sieving using metal-doped ultramicroporous carbon membranes for H2 separation

作者：Zhao, Guanran[1];Wang, Kaixin[1];Fang, Chuning[1];Wang, Yixing[2];Wang, Darui[3];Song, Zhen[1,2];Lei, Linfeng[1,2];Xu, Zhi[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Suzhou Lab, Suzhou, Peoples R China;[3]Sinopec Shanghai Res Inst Petrochem Technol Co Ltd, Shanghai, Peoples R China

年份：2024

卷号：70

期号：6

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20241115721779);WOS:【SCI-EXPANDED(收录号:WOS:001180827200001)】；

基金：This study was supported by the National Key Research & Development Program of China (2021YFB3801301 and 2022YFB3805503), the National Natural Science Foundation of China (22208096), and Shanghai Pujiang Program (21PJ1401900).

语种：英文

外文关键词：carbon molecular sieve membranes; hollow fiber membranes; hydrogen separation and purification; membrane materials; membrane separations

摘要：Blue hydrogen produced from fossil fuels is recognized as a promising large-scale technology for realizing the hydrogen economy. Membrane-based separation is emerging as a viable alternative to traditional hydrogen purification technologies. Here, we present a facile strategy for fabricating carbon molecular sieve (CMS) hollow fiber membranes containing uniformly dispersed palladium (Pd) nanoparticles. The Pd nanoparticles, anchored in the carbon strands of CMS membranes, induced the carbon matrix toward a more ordered structure arrangement through a synergistic effect of entropy-driven size exclusion and acceleration of graphitization. As a result, the doped Pd nanoparticles facilitated the formation of ultramicropores <3.3 angstrom in the CMS membranes, which enabled a precise molecular sieving ability between H-2 and CO2 with H-2/CO2 selectivity up to 247. Furthermore, the membrane presented good mixed gas separation performances and was stable for over 250 h under simulated harsh industrial conditions.