2019
DOI: 10.1002/masy.201800165
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Recovery of CO2 Using Temperature‐Responsive Amine Gel Slurry

Abstract: Temperature‐responsive change in pKa of tertiary amines that are immobilized in the cross‐linked LCST polymer chains (temperature‐responsive amine gels) is applied to the separation and recovery of CO2 gas. Adsorption and desorption behaviors of CO2 gas on the temperature‐responsive amine gels are experimentally investigated using a temperature‐controlled gas‐liquid contact reactor with the slurries of the gels. Based on the control of the swelling volume of the temperature‐responsive gels via temperature swin… Show more

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“…Alcohol is known to absorb CO 2 better than water, and the CO 2 solubility decreases in higher alcohols [19,20,21,22]. Adding 10%–30% of ethanol, 2-propanol, 2-butanol, tert -butanol, and dimethylsulfoxide to the slurry reduced the desorption temperature of CO 2 , as was intended; however, the addition caused a significant reduction in the cycle capacity for CO 2 [23]. The addition of NaCl resulted in a decrease in both CO 2 solubility and the adsorption capacity of the gel with the increase of its concentration (0.01–0.1 M) in the slurry [23].…”
Section: Introductionmentioning
confidence: 99%
“…Alcohol is known to absorb CO 2 better than water, and the CO 2 solubility decreases in higher alcohols [19,20,21,22]. Adding 10%–30% of ethanol, 2-propanol, 2-butanol, tert -butanol, and dimethylsulfoxide to the slurry reduced the desorption temperature of CO 2 , as was intended; however, the addition caused a significant reduction in the cycle capacity for CO 2 [23]. The addition of NaCl resulted in a decrease in both CO 2 solubility and the adsorption capacity of the gel with the increase of its concentration (0.01–0.1 M) in the slurry [23].…”
Section: Introductionmentioning
confidence: 99%