Development of CO2 phase change absorbents by means of the cosolvent effect. Issue 10 (25th April 2018)

• Record Type: Journal Article
• Authors: Yang, Fushen; Jin, Xianhang; Fang, Jiawei; Tu, Weiwei; Yang, Ye; Cui, Chunhua; Zhang, Weidong
• Is Part Of: Green chemistry. Volume 20:Issue 10(2018)
• Page Start: 2328
• Page End: 2336
• Publication Date: 2018-04-25
• Subjects: Environmental chemistry -- Industrial applications -- Periodicals; Environmental management -- Periodicals; 660
• DOI: 10.1039/c8gc00283e
• Languages: English
• ISSNs: 1463-9262

Abstract

Abstract : Development of CO2 phase change absorbents comprising MDEA/C4–C6 alcohol/H2 O by means of the cosolvent effect. Abstract : The CO2 phase change absorbent, CPCA, as a novel alternative absorbent, has attracted great attention recently. In this work, the CPCAs composed of MDEA/C4–C6 alcohol/H2 O were developed by means of the cosolvent effect. The cosolvent effect of MDEA on the solubility of C4–C6 alcohols in H2 O was verified. The CPCAs composed of MDEA/1-butanol/H2 O were further examined including the species distributions, absorption rate, cycling capacity and regenerability. The initial absorption rates of all CPCAs were higher than that of 30% MDEA, and its maximum value was 2.5 times higher. A different behavior was shown for the CPCAs that an increase in the absorption rate was observed for a period of time when the CPCAs became turbid. The optimal CO2 cycling capacity of CPCA was 2.48 mol CO2 kg −1, which was 70% higher compared to 30 wt% MDEA.