{"title":"Microporous Metal-Containing Hydrogen-Bonded Organic Frameworks with Benchmark C2H2 Storage Density for Efficient C2H2/C2H4 and C2H2/CO2 Separations.","authors":"Jiali Fu,Qingxue Hui,Yu-Hao Gu,Qi Ding,Haoning Xu,Biao Yang,Chengyu Huangfu,Qingqing Wang,Xin-Li Liu,Xin-Yi Wang,Youting Wu,Xingbang Hu,Shuai Yuan,Zhaoqiang Zhang","doi":"10.1002/anie.202514417","DOIUrl":null,"url":null,"abstract":"Separation of C2H2 from industrially important gas pairs using energy-efficient adsorptive techniques with multifunctional porous materials remains a significant yet challenging issue. Here, we report the highly efficient separation of C2H2/CO2 and C2H2/C2H4 mixtures with isostructural metal-containing hydrogen-bonded organic frameworks (M-HOFs), which feature micropore channels decorated with high-density and uncoordinated carboxyl groups. Single-crystal X-ray diffraction analysis reveals that each free carboxyl group is capable of trapping one C2H2 molecule through hydrogen bonding. This endows the M-HOFs with excellent C2H2 capture capability, achieving a benchmark storage density of 396.0 mg cm-3, while simultaneously demonstrating remarkable selectivity over C2H4 (420-97) and CO2 (188-53). Breakthrough experiments confirm that binary gas mixtures can be efficiently separated by M-HOFs, where an impressive C2H4 productivity (137.4 mol kg-1) is realized in the separation of C2H2/C2H4 (1/99), and an outstanding separation factor (17) is achieved for C2H2/CO2 (50/50) splitting. Coupled with their superior chemical stability, these M-HOFs display tremendous potential for practical applications.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"91 1","pages":"e202514417"},"PeriodicalIF":16.9000,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Angewandte Chemie International Edition","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1002/anie.202514417","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Separation of C2H2 from industrially important gas pairs using energy-efficient adsorptive techniques with multifunctional porous materials remains a significant yet challenging issue. Here, we report the highly efficient separation of C2H2/CO2 and C2H2/C2H4 mixtures with isostructural metal-containing hydrogen-bonded organic frameworks (M-HOFs), which feature micropore channels decorated with high-density and uncoordinated carboxyl groups. Single-crystal X-ray diffraction analysis reveals that each free carboxyl group is capable of trapping one C2H2 molecule through hydrogen bonding. This endows the M-HOFs with excellent C2H2 capture capability, achieving a benchmark storage density of 396.0 mg cm-3, while simultaneously demonstrating remarkable selectivity over C2H4 (420-97) and CO2 (188-53). Breakthrough experiments confirm that binary gas mixtures can be efficiently separated by M-HOFs, where an impressive C2H4 productivity (137.4 mol kg-1) is realized in the separation of C2H2/C2H4 (1/99), and an outstanding separation factor (17) is achieved for C2H2/CO2 (50/50) splitting. Coupled with their superior chemical stability, these M-HOFs display tremendous potential for practical applications.
期刊介绍:
Angewandte Chemie, a journal of the German Chemical Society (GDCh), maintains a leading position among scholarly journals in general chemistry with an impressive Impact Factor of 16.6 (2022 Journal Citation Reports, Clarivate, 2023). Published weekly in a reader-friendly format, it features new articles almost every day. Established in 1887, Angewandte Chemie is a prominent chemistry journal, offering a dynamic blend of Review-type articles, Highlights, Communications, and Research Articles on a weekly basis, making it unique in the field.