Density and viscosity of aqueous blend of 1-butyl-3-methylimidazolium tetrafluoroburate ([Bmim][BF4]) + piperazine (PZ) and its performance of CO2 absorption

Analysis of Surface Thermodynamics for Amino Acid Ionic Liquid–1-Dimethylamino-2-propanol Aqueous Blends

“…One approach to improve the absorption performance is to use amine blends, as they give an optimal trade-off between reaction rate and energy cost. − Recently, the amino acid ionic liquids (AAILs) have emerged as promising activators, and interest in blending amines with ionic liquids has increased rapidly owing to their outstanding properties. − Addition of AAILs (e.g., 1-butyl-3-methylimidazolium- l -lysinate ([Bmim]­[Lys]), 1-butyl-3-methylimidazolium glycinate ([Bmim]­[Gly]), and tetramethylammoniumglycinate ([N 1111 ]­[Gly])) into N -methyldiethanolamine (MDEA) aqueous solution has been demonstrated to show high absorption perfomance. − A novel tertiary amine, 1-dimethylamino-2-propanol (DMA2P), has been considered to be a potential candidate in CO 2 removal processes due to its high kinetics. , The previous works have well documented the CO 2 absorption performance of the DMA2P aqueous solution concerning both the kinetics and thermodynamics. − Due to the advantages of DMA2P and AAILs, DMA2P–AAILs aqueous solution could be used as an alternative absorbent for CO 2 capture.…”

Volumetric and Viscometric Properties for Binary and Ternary Solutions of Diethylenetriamine, N,N-Diethylethanolamine, and Water

“…In practical application, piperazine (PZ) usually served as an activator for tertiary amines to increase the CO 2 absorption reactivity. 9 In order to combine the advantages of various single CO 2 absorbents, the concept of the blended amine-based CO 2 absorbent was first proposed by Chakravarty. 10 The different kinds of amines were often blended into a mixture solvent to improve the overall performance of the absorbent, 11−14 with a faster CO 2 absorption rate, lower regenerative energy consumption, and larger CO 2 absorption capacity.…”

“…Enamine (diethylenetriamine, DETA) exhibits a fast CO 2 absorption rate and high absorption capacity; however, its high viscosity, low absorption efficiency, and high price limited its commercialization. In practical application, piperazine (PZ) usually served as an activator for tertiary amines to increase the CO 2 absorption reactivity . In order to combine the advantages of various single CO 2 absorbents, the concept of the blended amine-based CO 2 absorbent was first proposed by Chakravarty .…”