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NH3 absorption performance and reversible absorption mechanisms of protic ionic liquids with six-membered N-heterocyclic cations

文献类型：期刊论文

作者Li, Pengfei2,3; Shang, Dawei3; Tu, Wenhui3; Zeng, Shaojuan3; Nie, Yi1,3; Bai, Lu3; Dong, Haifeng3; Zhang, Xiangping1,2,3
刊名SEPARATION AND PURIFICATION TECHNOLOGY
出版日期2020-10-01
卷号248页码:10
ISSN号1383-5866
关键词Protic ionic liquids NH3 absorption N-heterocyclic cations Pyridinium Piperidinium
DOI10.1016/j.seppur.2020.117087
英文摘要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.
WOS关键词DEEP EUTECTIC SOLVENTS ; HIGHLY EFFICIENT ; AMMONIA ; IMIDAZOLIUM ; BIODEGRADABILITY ; PYRROLIDINIUM ; PIPERIDINIUM ; CAPTURE
资助项目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研究方向Engineering
语种英语
出版者ELSEVIER
WOS记录号WOS:000538827600081
资助机构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
源URL[http://ir.ipe.ac.cn/handle/122111/41126]  
专题中国科学院过程工程研究所
通讯作者Zeng, Shaojuan; Zhang, Xiangping
作者单位1.Zhengzhou Inst Emerging Ind Technol, Zhengzhou 450000, Peoples R China
2.Univ Chinese Acad Sci, Coll Chem & Engn, Beijing 100049, Peoples R China
3.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
推荐引用方式
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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来源：过程工程研究所

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