化工学报2015，Vol.66Issue(Z1)：25-31,7.DOI:10.11949/j.issn.0438-1157.20141835
三元低共熔离子液体中CO2的吸收
Absorption of CO2 in a novel ternary deep eutectic solvent
摘要
Abstract
A series of novel ternary deep eutectic solvents (TDESs) were synthesized fromN,N-dimethyl acetamide (DMA), choline chloride (CC) and ethylene glycol or glycerol with different mole ratios (nDMA:nCC:nethylene glycol=1:1:3, 1:1:4,nDMA:nCC:nglycerol=1:1:3, 1:1:4). Solubilities of CO2 in TDESs were determined in the temperature rangeT=293.15—323.15 K with 10℃ intervals under pressure ranging from 0 to 600.0 kPa using the isochoric saturation method. The solubility of CO2 in the liquids increased linearly with increasing pressure and decreased with increasing temperature. Henry's constants were calculated, while TDES obtained from DMA, CC and ethylene glycol with mole ratio 1:1:3 showing the lowest value of 2.174 MPa·kg·mol?1 at 293.15 K. Thermodynamics of CO2 absorption were also calculated, including enthalpy, entropy, Gibbs free energy. The negative enthalpy demonstrated that the process was exothermic.关键词
溶解度/CO2/三元低共熔离子液体/亨利常数/热动力学性质Key words
solubility/CO2/ternary deep eutectic solvent/Henry's constant/thermodynamics分类
化学化工引用本文复制引用
李桂花,单海芳,艾宁,邓东顺..三元低共熔离子液体中CO2的吸收[J].化工学报,2015,66(Z1):25-31,7.基金项目
国家自然科学基金项目(21006095) （21006095）
浙江省自然科学基金项目(4100069).supported by the National Natural Science Foundation of China (21006095) and the Natural Science Foundation of Zhejiang Province (4100069). （4100069）
