Density and viscosity of aqueous blend of 1-butyl-3-methylimidazolium tetrafluoroburate ([Bmim][BF4]) + piperazine (PZ) and its performance of CO2 absorption

被引：6
|
作者：
Lu, Jian-Gang [1 ]
Ma, Hong-Lu [1 ]
Shao, Ying [1 ]
Li, Xiang [1 ]
Wang, Jiu-Yang [1 ]
Zhao, Xin [2 ]
Xu, Zheng-Wen [1 ]
机构：
[1] Nanjing Univ Informat Sci & Technol, Jiangsu Collaborat Innovat Ctr Atmospher Environm, Jiangsu Key Lab Atmospher Environm Monitoring & P, Sch Environm Sci & Engn, Nanjing 210044, Jiangsu, Peoples R China
[2] Nanjing Inst Environm Sci, Minist Ecol & Environm, State Environm Protect Key Lab Soil Environm Mana, Nanjing 210042, Jiangsu, Peoples R China
来源：
JOURNAL OF MOLECULAR LIQUIDS | 2019年 / 277卷
关键词：
Density; Viscosity; CO2; absorption; 1-butyl-3-methylimidazolium tetrafluoroburate; Piperazine; N-METHYLDIETHANOLAMINES MDEA; CO2; CAPTURE; IONIC LIQUID; CARBON-DIOXIDE; MASS-TRANSFER; ABSORPTION PERFORMANCE; COMPLEX ABSORBENTS; AMINE; SOLUBILITY; PIPERAZINE;
D O I：
10.1016/j.molliq.2018.12.068
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
An aqueous blend of 1-butyl-3-methylimidazolium tetrafluoroburate [Bmim][BF4) + piperazine (PZ) was proposed in this work. Density and viscosity of the aqueous blend were measured and correlated at (293.15-333.15) K and atmospheric pressure. Performance of CO2 absorption into the aqueous blend was evaluated. It turned out that PZ mass fraction slightly influenced on the density and viscosity, being linear with them. Temperature significantly affected the viscosity. The calculated values are in good agreement with the experimental values. The main factors affecting the CO2 loading of the aqueous blend were PZ mass fraction, gas CO2 mole fraction and temperature. The average absorption rate of the aqueous blend was the biggest in the aqueous IBmim] [BF4], PZ and [Bmim][BF4]/PZ, and much higher than that of the former two. The performance of the aqueous [Bmim][BF4]/PZ with low PZ mass fraction was better than that with high PZ mass fraction. It demonstrated that the aqueous blend of [Bmim][BF4]/PZ is a good absorbent of CO2. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：302 / 309
页数：8
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