CO2 absorption with diamine functionalized deep eutectic solvents in microstructured reactors

被引:23
作者
Pasha, Mohsin [1 ]
Zhang, Hong [1 ]
Shang, Minjing [1 ]
Li, Guangxiao [1 ]
Su, Yuanhai [1 ,2 ]
机构
[1] Shanghai Jiao Tong Univ, Frontiers Sci Ctr Transformat Mol, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Key Lab Thin Film & Microfabricat, Minist Educ, Shanghai 200240, Peoples R China
基金
中国国家自然科学基金;
关键词
CO; 2; capture; MAPA functionalized DES; Viscosity; Microstructured reactor; Process intensification; MASS-TRANSFER CHARACTERISTICS; CARBON-DIOXIDE ABSORPTION; N-METHYLDIETHANOLAMINE; MICROCHANNEL REACTOR; AQUEOUS-SOLUTIONS; CHOLINE CHLORIDE; HIGHLY-EFFICIENT; IONIC LIQUIDS; CAPTURE; MONOETHANOLAMINE;
D O I
10.1016/j.psep.2021.12.043
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Deep eutectic solvents (DESs) have gained much attention to capture CO2 nowadays because of their simpler synthesis, higher sustainability and better eco-friendly properties compared to ionic liquids and conventional amine sorbents. Herein, we analyzed the CO2 absorption performance of five novel diamine functionalized DESs in microstructured reactors (MSRs) with metal foams as packing materials. Interestingly, the DES functionalized with N-methyl-1,3-propanediamaine (MAPA) showed remarkable absorption performance without significant viscosity rise. The CO2 loading and absorption efficiency of this DES could reach 0.78 mol of CO2 / mol of diamine and 98% at the gas to liquid flow rate ratios of 640 and 240, respectively. Even computational studies showed that the ethylenediamine (EDA) functionalized DES had the highest CO2 uptake ability due to the low energy barrier, but sudden rise in viscosity of the EDA functionalized DES reduced its CO2 absorption ability compared to the MAPA functionalized DES. Further experiments indicated that the MAPA functionalized DES showed low heat of absorption and remarkable regeneration ability. Overall rate constant and absorption flux of this DES were higher than most previously used amine functionalized DESs. Consequently, the unification of this remarkable DES and microreactors has great process intensification potential for CO2 absorption. (c) 2021 Published by Elsevier B.V. on behalf of Institution of Chemical Engineers.
引用
收藏
页码:106 / 119
页数:14
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