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

doi:10.1016/j.seppur.2020.117087

	NH3 absorption performance and reversible absorption mechanisms of protic ionic liquids with six-membered N-heterocyclic cations
	Li, Pengfei 1,3; Shang, Dawei 1; Tu, Wenhui 1; Zeng, Shaojuan 1; Nie, Yi 1,2; Bai, Lu 1; Dong, Haifeng 1; Zhang, Xiangping 1,2,3
刊名	SEPARATION AND PURIFICATION TECHNOLOGY
	2020-10-01
卷号	248 页码:10
关键词	Protic ionic liquids NH3 absorption N-heterocyclic cations Pyridinium Piperidinium
ISSN号	1383-5866
DOI	10.1016/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.
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关键词	DEEP EUTECTIC SOLVENTS ; HIGHLY EFFICIENT ; AMMONIA ; IMIDAZOLIUM ; BIODEGRADABILITY ; PYRROLIDINIUM ; PIPERIDINIUM ; CAPTURE
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
内容类型	期刊论文
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.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.Zhengzhou Inst Emerging Ind Technol, Zhengzhou 450000, Peoples R China 3.Univ Chinese Acad Sci, Coll Chem & Engn, Beijing 100049, 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.