Knowledge Management System Of Institute of process engineering,CAS
| Aprotic phosphonium-based ionic liquid as electrolyte for high CO2 electroreduction to oxalate | |
| Jiang, Chongyang1,2; Zeng, Shaojuan1; Ma, Xifei1; Feng, Jiaqi1; Li, Guilin1; Bai, Lu1; Li, Fangfang3; Ji, Xiaoyan3; Zhang, Xiangping1,2 | |
| 2022-08-27 | |
| Source Publication | AICHE JOURNAL
 |
| ISSN | 0001-1541 |
| Pages | 9 |
| Abstract | In this study, a new CO2 electroreduction electrolyte system consisting of tetrabutylphosphonium 4-(methoxycarbonyl) phenol ([P-4444][4-MF-PhO]) ionic liquid (IL) and acetonitrile (AcN) was designed to produce oxalate, and the electroreduction mechanism was studied. The results show that using the new IL-based electrolyte, the electroreduction system exhibits 93.8% Faradaic efficiency and 12.6 mA cm(-2) partial current density of oxalate at -2.6 V. The formation rate of oxalate is 234.4 mu mol cm(-2) h(-1), which is better than those reported in the literature. The mechanism study using density functional theory (DFT) calculations reveals that [P-4444][4-MF-PhO] can effectively activate CO2 molecule through ester and phenoxy double active sites. In addition, in the phosphonium-based ionic environment, the potential barriers of the key intermediates *CO2- and *C2O42- are reduced by the induced electric field, which greatly facilitates the activation and conversion of CO2 molecule to oxalate. |
| Keyword | aprotic CO2 electroreduction oxalate phosphonium-based ionic liquid |
| DOI | 10.1002/aic.17859 |
| Language | 英语 |
| WOS Keyword | ELECTROCHEMICAL REDUCTION ; CARBON-DIOXIDE ; CONVERSION ; EFFICIENCY ; CATALYSIS ; MECHANISM |
| Funding Project | National Key R&D Program of China[2020YFA0710200] ; National Natural Science Foundation of China[21838010] ; National Natural Science Foundation of China[22122814] ; Innovation Academy for Green Manufacture[IAGM2020C14] ; Instrument Developing Project of the Chinese Academy of Sciences[YJKYYQ20200062] |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China ; Innovation Academy for Green Manufacture ; Instrument Developing Project of the Chinese Academy of Sciences |
| WOS ID | WOS:000846452500001 |
| Publisher | WILEY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/54605 |
| 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, Sch Future Technol, Beijing, Peoples R China 3.Lulea Univ Technol, Div Energy Sci, Energy Engn, Lulea, Sweden |
| Recommended Citation GB/T 7714 | Jiang, Chongyang,Zeng, Shaojuan,Ma, Xifei,et al. Aprotic phosphonium-based ionic liquid as electrolyte for high CO2 electroreduction to oxalate[J]. AICHE JOURNAL,2022:9. |
| APA | Jiang, Chongyang.,Zeng, Shaojuan.,Ma, Xifei.,Feng, Jiaqi.,Li, Guilin.,...&Zhang, Xiangping.(2022).Aprotic phosphonium-based ionic liquid as electrolyte for high CO2 electroreduction to oxalate.AICHE JOURNAL,9. |
| MLA | Jiang, Chongyang,et al."Aprotic phosphonium-based ionic liquid as electrolyte for high CO2 electroreduction to oxalate".AICHE JOURNAL (2022):9. |
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