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| NH3 absorption performance and reversible absorption mechanisms of protic ionic liquids with six-membered N-heterocyclic cations | |
| Li, Pengfei1,2; Shang, Dawei1; Tu, Wenhui1; Zeng, Shaojuan1; Nie, Yi1,3; Bai, Lu1; Dong, Haifeng1; Zhang, Xiangping1,2,3 | |
| 2020-10-01 | |
| Source Publication | SEPARATION AND PURIFICATION TECHNOLOGY
 |
| ISSN | 1383-5866 |
| Volume | 248Pages:10 |
| Abstract | Ammonia (NH3) is one of the main reasons for the formation of aerosols. NH3 pollution mainly comes from a large amount of emissions in industrial production. Ionic liquids (ILs), as a green solvent, can efficiently separate and recover NH3 from industrial NH3-containing tail gas. In this work, novel protic ionic liquids (PILs) with hydrogen bond donating ability were designed and synthesized by incorporating six-membered N-heterocyclic compounds including pyridinium and piperidinium as cations. Three pyridinium-based PILs with single protic H showed higher NH3 capacity with the maximum of 3.078 mol NH3/mol IL at 313.1 K and 0.10 MPa than the piperidinium-based PILs with double interaction sites. However, there was obvious reduction in NH3 capacity for pyridinium-based PILs during absorption and absorption-desorption cycles. The reason is that the acidic protic H of cations of pyridinium-based PILs is easily stripped in supersaturated alkaline environment due to the smaller pKa of pyridine derivatives than that of NH3, forming the NH4+ and volatile neutral pyridine derivatives. This work will provide useful guidance to the design of novel ILs used for efficient and reversible absorption of NH3. |
| Keyword | Protic ionic liquids NH3 absorption N-heterocyclic cations Pyridinium Piperidinium |
| DOI | 10.1016/j.seppur.2020.117087 |
| Language | 英语 |
| WOS Keyword | DEEP EUTECTIC SOLVENTS ; HIGHLY EFFICIENT ; AMMONIA ; IMIDAZOLIUM ; BIODEGRADABILITY ; PYRROLIDINIUM ; PIPERIDINIUM ; CAPTURE |
| Funding Project | Major Program of National Natural Science Foundation of China[21890764] ; National Natural Science Foundation of China[21776277] ; National Natural Science Foundation of China[21978306] ; Beijing Municipal Natural Science Foundation[2182071] ; Natural Science Foundation of Hebei Province[B2019103011] |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| Funding Organization | Major Program of National Natural Science Foundation of China ; National Natural Science Foundation of China ; Beijing Municipal Natural Science Foundation ; Natural Science Foundation of Hebei Province |
| WOS ID | WOS:000538827600081 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/41127 |
| 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, Key Lab Green Proc & Engn, Beijing Key Lab Ion Liquids Clean Proc,State Key, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Coll Chem & Engn, Beijing 100049, Peoples R China 3.Zhengzhou Inst Emerging Ind Technol, Zhengzhou 450000, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Pengfei,Shang, Dawei,Tu, Wenhui,et al. NH3 absorption performance and reversible absorption mechanisms of protic ionic liquids with six-membered N-heterocyclic cations[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2020,248:10. |
| APA | Li, Pengfei.,Shang, Dawei.,Tu, Wenhui.,Zeng, Shaojuan.,Nie, Yi.,...&Zhang, Xiangping.(2020).NH3 absorption performance and reversible absorption mechanisms of protic ionic liquids with six-membered N-heterocyclic cations.SEPARATION AND PURIFICATION TECHNOLOGY,248,10. |
| MLA | Li, Pengfei,et al."NH3 absorption performance and reversible absorption mechanisms of protic ionic liquids with six-membered N-heterocyclic cations".SEPARATION AND PURIFICATION TECHNOLOGY 248(2020):10. |
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