Article
Engineering, Environmental
Hongwei Ren, Yize Liu, Ruoyao Zhang, Tengda Zhao, Jing Han, Zhiyang Zheng, Erhong Duan
Summary: Amino acid-based natural deep eutectic solvents (NADESs) were prepared successfully to improve the absorption efficiency of CO2 capture solvent. The study found that L-Arg/EG NADESs exhibited better absorption capacity due to their multi-reactive sites, unstable stage, more accessibility of alkyl structure, and less electronegativity.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Engineering, Chemical
Dmitriy M. Makarov, Yuliya A. Fadeeva, Vasiliy A. Golubev, Arkadiy M. Kolker, G. A. Krestov
Summary: This study proposes a two-step screening process using data-driven methods and machine learning models to design novel deep eutectic solvents (DESs) as CO2 absorbents. Through prediction and experimental validation, it was found that these DESs have strong CO2 absorption capacity and can potentially be used for CO2 capture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Hui Fu, Haina Sang, Li Su, Xinming Zhou, Zhihua Peng, Yulu Zhou, Jinhe Liu
Summary: novel DESs based on multiple sites interaction were used as promising absorbents for CO2 capture, achieving high absorption capacities due to synergistic interaction with CO2 and the important role played by ethylene glycol during the absorption process.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Yu Chen, Xiaohong Hu, Wenjun Chen, Chong Liu, Kepan Qiao, Meijing Zhu, Yanyan Lou, Tiancheng Mu
Summary: The study finds that superbase-derived ESs are highly volatile, even at room temperature. The typical EG: DBU (4:1) solvent exhibits a three-stage volatilizing mechanism. ESs and their mixture with CO2 are highly volatile.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Ruizhong Lu, Songqi Ma, Yang Zhai, Zeyu Geng, Zhi Jin, Yong Fu, Wei Wang, Yun Xu
Summary: The development of deep eutectic solvents (DESs) as absorbents for selective uptake of SO2 from CO2 has gained interest in flue-gas desulfurization. In this study, a series of DESs were designed using ACC as HBA and EG, 1,3-PDO, Gly, PEG200, and TG as HBDs. The DESs showed good thermal stability and competitive capacities of SO2 absorption. The DES ACC/PEG200 (1:1) demonstrated a remarkable absorption capacity of SO2 and high selectivity separation from CO2.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Ping Liu, Kaixing Cai, Mao Liu, Meisong Xu, Tianxiang Zhao
Summary: This study reports an effective strategy using hydroxyl-rich deep eutectic solvents (DESs) for capturing sulfur hexafluoride (SF6) and investigates the physical properties of different DESs as well as the effects of absorption conditions on SF6 capture performance.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Ziyue Zhou, Yu Cao, Kai Zong, Dongshun Deng
Summary: This study proposed a new strategy to design non-ionic deep eutectic solvents (DESs) for efficient absorption of ammonia. Several phenol-based DESs were constructed and investigated for NH3 absorption performance. Among them, Res/PhOH (1:3) demonstrated attractive NH3 absorption capacity, good reversibility, thermal stability, and NH3/CO2 selectivity.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Review
Biochemistry & Molecular Biology
Iwona Cichowska-Kopczynska, Bartosz Nowosielski, Dorota Warminska
Summary: Nowadays, researchers are striving to find a solution to the problem of global warming, with a focus on reducing carbon dioxide emissions. The use of alkanolamines for carbon dioxide capture is problematic due to its corrosive nature, volatility, and high energy demand. Deep eutectic solvents (DESs) have emerged as a potential alternative, capable of physically and chemically absorbing carbon dioxide. Different strategies, such as the addition of water or co-solvents, have been proposed to enhance CO2 absorption using DESs. This review presents an overview of DESs, their impact on CO2 absorption, and practical considerations for their use in CO2 separation.
Article
Chemistry, Physical
Dongshun Deng, Xiaoxia Deng, Xiuzhi Duan, Lei Gong
Summary: Deep eutectic solvents (DES) are considered as the second generation ionic liquids with potential applications in gas capture and separation, due to their negligible vapor pressure and abundant formation variation. In this study, DESs with low viscosity were constructed using protic guanidine isothiocyanate and acetamide. The gas solubility was enhanced with increasing molar ratio, pressure, and decreasing temperature, while the solubilities of NH3 and CO2 were correlated by Henry's law. The DESs showed efficient NH3 absorption and selective separation performance.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Chemical
Yuanyuan Cao, Yilin Li, Mingjie Sun, Yufan Xu, Li Chen
Summary: Superbase-derived deep eutectic solvents (DESs) are considered as promising solvents for carbon dioxide capture and conversion due to their biodegradability, low toxicity, and sustainability. However, contrary to previous belief, this study reveals that superbase-derived DESs actually exhibit extremely high toxicity, about 266 times that of DESs reported before. The toxicity of DESs can be tuned by adjusting the types and ratios of hydrogen bond donors and acceptors. This research provides insights into reducing the toxicity of DESs and promoting their sustainable and green application in carbon dioxide capture and conversion.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Pingping Shao, Ruoya Wang, Tianxiang Zhao, Chun Zhu
Summary: This study reports an efficient technique for capturing ammonia using protic amino-2-propanol hydrochloride-based deep eutectic solvents, which exhibit remarkable NH3 uptake and good recyclability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Chemical
Ke Li, Kai Zong, Ziyue Zhou, Dongshun Deng
Summary: This study conducted new lithium deep eutectic solvents (DESs) by pairing simple lithium salt with various hydrogen bond donors, with LiCl/EG (1:3) DES showing exceptional performance in NH3 capture. The results provide useful insights for designing metallic DESs for NH3 separation applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Ning-Ning Cheng, Zi-Liang Li, Hong-Chao Lan, Wen-Long Xu, Wen-Jing Jiang, Kuan Huang, Hai-Long Peng
Summary: Developing new NH3 separation technology is important for environmental protection in ammonia synthesis. Ethylamine chloride (EaCl) can form deep eutectic solvents (DESs) with resorcinol (Res) and phloroglucinol (Phl), which show high NH3 absorption performance and selective absorption towards N-2 and H-2.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Lu Zheng, Xinyue Zhang, Qiuke Li, Yongde Ma, Zhenping Cai, Yanning Cao, Kuan Huang, Lilong Jiang
Summary: A novel kind of non-chloride deep eutectic solvents (DESs) were constructed from dihydroxybenzoic acids (DHBAs) and ethylene glycol (EG) for NH3 separation. The DHBA + EG DESs exhibited impressive NH3 absorption capacities under reduced pressures, reaching 5.64 and 11.69 mol/kg at 0.1 and 1 bar respectively at 298.2 K. After five absorption-desorption cycles, the DHBA + EG DESs preserved excellent NH3 absorption performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Hui Fu, Xinyu Wang, Haina Sang, Jinhe Liu, Xufeng Lin, Longli Zhang
Summary: This study synthesized superbase-based deep eutectic solvents (DESs) with different active sites for CO2 capture, and found that the presence of ethylene glycol (EG) played a crucial role in enhancing CO2 absorption capacity. By analyzing experimental results, it was determined that the synergistic interaction between IL and EG contributes to the improved CO2 absorption performance observed in the DESS.
JOURNAL OF CO2 UTILIZATION
(2021)