Knowledge Management System Of Institute of process engineering,CAS
| Superior selective adsorption of trace CO2 induced by chemical interaction and created ultra-micropores of ionic liquid composites | |
| Zheng, Shuang1,2; Zeng, Shaojuan1; Li, Guilin1; Yao, Xiaoqian1; Li, Zhengchen3,4; Zhang, Xiangping1,2,4 | |
| 2023 | |
| Source Publication | CHEMICAL ENGINEERING JOURNAL
 |
| ISSN | 1385-8947 |
| Volume | 451Pages:12 |
| Abstract | Effective capture of trace CO2 in atmosphere or confined spaces to ensure human beings safety draw a lot of attention, however, how to simultaneously improve CO2 capacity and selectivity still faces great challenge. Herein, combining porous molecular sieves (SBA-15 and MCM-41) and the anion-functionalized ionic liquid (IL) tetraethylammonium glycinate ([N-2222][Gly]), a series of hierarchically porous IL composites with different IL loadings were designed and prepared. Compared with pristine supports, the incorporation of [N-2222][Gly] simultaneously improves CO2 capacity and CO2/N-2 selectivity by orders of magnitude, especially for confined spaces (< 5000 ppm) and air (415 ppm). When the IL loading was 60 wt%, novel micropores were created, especially ultra-micropores (< 0.65 nm), which are not present in bare supports and other [N-2222][Gly]@SBA-15 (15, 30 and 45 wt%). Among them, 60 wt%[N-2222][Gly]@SBA-15 showed the highest CO2 uptake of 1.45 and 1.88 mmolCO(2)/g-adsorbent at 0.0005 and 0.005 bar under 313 K along with recyclability, which are much superior to the state-of-the-art reported values. Moreover, superb ideal CO2/N-2 selectivity of 11,545 at 0.005 bar and 288 K was achieved, which was 288 times that of SBA-15. Meanwhile, mixed gas breakthrough experiments demonstrated that 60 wt% [N-2222][Gly]@SBA-15 shows outstanding CO2 separation performance under simulative confined spaces and ambient air. The ultra-high CO2 separation performance was attributed to the synergy of chemical interaction between the IL anion and CO2 as well as newly created micro-and ultra-micropores effect. This work provides guidelines for the design of IL composites with ultra-micropores for efficient trace CO2 removal. |
| Keyword | Ionic liquids CO2 adsorption Ultra-micropores Trace CO2 Selective capture |
| DOI | 10.1016/j.cej.2022.138736 |
| Language | 英语 |
| WOS Keyword | MESOPOROUS SILICA ; SEPARATION PERFORMANCE ; CARBON ; CAPTURE ; ADSORBENTS ; ABSORPTION ; SI-MCM-41 ; DIFFUSION ; CAPACITY ; BEHAVIOR |
| Funding Project | National Key R & D Program of China[2020YFA0710200] ; National Natural Science Foundation of China[21890764] ; National Natural Science Foundation of China[22122814] ; Major Scientific and Techno- logical Innovation Project of Shandong Province[2019JZZY010518] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2018064] ; Innovation Academy for Green Manufacture, Beijing 100190[IAGM2020C14] |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Environmental ; Engineering, Chemical |
| Funding Organization | National Key R & D Program of China ; National Natural Science Foundation of China ; Major Scientific and Techno- logical Innovation Project of Shandong Province ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Innovation Academy for Green Manufacture, Beijing 100190 |
| WOS ID | WOS:000875112000002 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/55234 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Zeng, Shaojuan; Zhang, Xiangping |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 4.Univ Chinese Acad Sci, Coll Chem Engn, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Zheng, Shuang,Zeng, Shaojuan,Li, Guilin,et al. Superior selective adsorption of trace CO2 induced by chemical interaction and created ultra-micropores of ionic liquid composites[J]. CHEMICAL ENGINEERING JOURNAL,2023,451:12. |
| APA | Zheng, Shuang,Zeng, Shaojuan,Li, Guilin,Yao, Xiaoqian,Li, Zhengchen,&Zhang, Xiangping.(2023).Superior selective adsorption of trace CO2 induced by chemical interaction and created ultra-micropores of ionic liquid composites.CHEMICAL ENGINEERING JOURNAL,451,12. |
| MLA | Zheng, Shuang,et al."Superior selective adsorption of trace CO2 induced by chemical interaction and created ultra-micropores of ionic liquid composites".CHEMICAL ENGINEERING JOURNAL 451(2023):12. |
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