Physical properties characterizations and NH3 capture performance investigation of novel phenol-based deep eutectic solvents

被引：0
|
作者：
Cheng N. [1 ]
Zeng L. [1 ]
Deng Y. [1 ]
Peng H. [1 ,2 ]
Huang K. [1 ,2 ]
机构：
[1] School of Resources, Environmental and Chemical Engineering, Nanchang University, Nanchang
[2] Key Laboratory of Poyang Lake Environment and Resource Utilization of Ministry of Education, Nanchang
来源：
Huagong Xuebao/CIESC Journal | 2020年 / 71卷 / 11期
关键词：
Absorption; Ammonia; Solubility; Solvents; Thermodynamics;
D O I：
10.11949/0438-1157.20200796
中图分类号：
学科分类号：
摘要：
NH3 pollution has always been a key concern in chemical industry, environmental protection and other fields. The capture and recovery of NH3 in industrial exhaust gas is of great significance. A novel class of phenol-based deep eutectic solvents (DESs) were constructed by using 1-ethyl-3-methylimidazolium chloride ([Emim]Cl) as the hydrogen bond acceptor, while phenol (Phe), resorcinol (Res) and phloroglucinol (Phl) as the hydrogen bond donors. The densities and viscosities of phenol-based DESs at different temperatures were determined in detail, and the density and viscosity data were correlated by empirical equations. In addition, the NH3 absorption-desorption performance and absorption selectivity of phenol-based DESs were systematically investigated. It is found that the capacities of phenol-based DESs for NH3 absorption are quite high, and the absorbed NH3 can be released by heating and evacuating, with the capacities for NH3 absorption remaining almost unchanged after several cycles. However, the capacities of phenol-based DESs for CO2 absorption are quite low, indicating the excellent performance of phenol-based DESs for NH3/CO2 selective absorption. Finally, the interaction mechanism of NH3 absorption in phenol-based DESs was studied in depth with the help of spectral characterizations and quantum chemistry calculations. © 2020, Chemical Industry Press Co., Ltd. All right reserved.
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页码：5043 / 5051
页数：8
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