Hollow fiber-supported designer ionic liquid sponges for post-combustion CO2 scrubbing

Epoxide-Functionalized, Poly(ethylenimine)-Confined Silica/Polymer Module Affording Sustainable CO2 Capture in Rapid Thermal Swing Adsorption

“…The lumen layer was evolved around the bore side of the PAI/SiO 2 /0.37EB-PEI and PAI/SiO 2 /PEI by a post-treatment that was slightly modified based on those reported elsewhere. ,, Neoprene was used as a precursor to form the lumen layer and first mixed with TSR-633 to cross-link the Neoprene at a weight ratio of 89/11. The mixed solution was fed to the bore side of six HFSs with an Isco syringe pump (Model No.…”

“…Additionally, the greatest CO 2 sorption ability of the SiO 2 /EB-PEI was achieved at an optimum EB/PEI molar ratio of 10:1 (denoted as 0.37EB-PEI), which was also used in this study . The texture of the lumen layer located between the water flow in the bore and the HFSs is another important factor to prevent an undesired mass transfer during the RTSA process. − In previous studies by Koros and co-workers, Neoprene latex (i.e., poly­(chloroprene)) was deposited onto the inner layer of HFSs, which formed a defect-free, impermeable lumen layer through the cross-linking of the Neoprene, and thus, it was adopted in our study to fabricate the module (Figure c) …”

“…30−32 In previous studies by Koros and co-workers, Neoprene latex (i.e., poly(chloroprene)) was deposited onto the inner layer of HFSs, which formed a defect-free, impermeable lumen layer through the cross-linking of the Neoprene, and thus, it was adopted in our study to fabricate the module (Figure 1c). 33 In addition, it should be noted that the desorption step of the previous RTSA cyclic experiments was done with a heat tape, not by a steam, which causes difficulty in achieving fast desorption kinetics. 20,27 We, however, performed multiple RTSA cyclic experiments consistently using a thermal fluid (H 2 O) to simulate the actual operation conditions.…”

Robust Immobilized Amine CO2 Sorbent Pellets Utilizing a Poly(Chloroprene) Polymer Binder and Fly Ash Additive

“…Because of the severe pellet degradation caused by PVC, we selected an alternative chlorinated polymer binder, poly(chloroprene) (PC), for pelletizing the sorbent. PC, also known as chlorinated rubber and neoprene, is commonly used in strong elastomeric bearing pads for even load transfer of steel construction beams, and was also employed by Koros's research group as a hydrophobic bore‐side H 2 O barrier in hollow‐fiber CO 2 capture sorbents . PC chiefly possesses repeating vinyl −CH 2 −(C−Cl)=CH−CH 2 − groups that could hydrogen bond to the FA and BIAS particles to form a strong pellet, similar to the −CH 2 −(CHCl)−CH 2 − groups of PVC.…”

Investigation of Surface Properties and Solubility of 1-Vinyl-3-alkyl/Esterimidazolium Halide Ionic Liquids by Density Functional Methods

“…at present, 7−17 which provide some theoretical basis for the structure analysis of ILs, the design and synthesis of novel functionalized ILs. 18,19 In addition, ILs have better solubility and surface activity; thus, they have been widely used in many scientific fields. 20−27 However, studies on the surface tension and solubility of ILs are still scarce, and the surface tensions of only a few of ILs have been reported; 28−32 Previous studies mainly have been done on the qualitative analysis of the solubility of ILs in organic or inorganic solvents, with little attention paid to the quantitative analysis of their solubility and the general law of solubility; The surface tension and solubility for most common ILs mainly concentrates on several N-alkyl-N-methylimidazolium ILs.…”