Vapor-enhanced CO2 adsorption mechanism of composite PEI@ZIF-8 modified by polyethyleneimine for CO2/N2 separation

Adsorption mechanism on metal organic frameworks of Cu-BTC, Fe-BTC and ZIF-8 for CO2 capture investigated by X-ray absorption fine structure

“…For Cu-BTC and ZIF-8, the largest adsorption amounts reported so far were 14 mmol/g (8.8 cm 3 /g) at 303 K/4 MPa [25] and 178.2 cm 3 /g at 298 K/5 MPa [26]. Comparable to our testing conditions, the adsorption amount at room temperature and ambient atmosphere measured by previous groups were 65−115 [27][28][29][30][31] and 9−16 cm 3 /g [32][33][34] for Cu-BTC and ZIF-8, respectively. Here, our current experimental data in Table 1 are well consistent with these reports.…”

Fabrication of Pd@ZIF-8 catalysts with different Pd spatial distributions and their catalytic properties

“…ZIF-8 is one of the most studied prototypical ZIF compounds due to its exceptional chemical and thermal stability [25,26]. ZIF-8 has an aperture size of 0.34 nm and can act as a microporous molecular sieve, which contributes to the ability to perform size-selective catalysis [19,20,[27][28][29][30][31][32][33]. The as-prepared Pd@ZIF-8 catalysts were extensively characterized by XRD, FESEM, HRTEM, N 2 sorption and ICP, and the relationship between the Pd spatial distribution and catalytic performance was evaluated in the hydrogenation of alkenes with different molecular sizes.…”

Polyethylenimine Applications in Carbon Dioxide Capture and Separation: From Theoretical Study to Experimental Work

“…In addition to different silica materials, CNTs, TNTs, and membranes, many researchers loaded PEI onto or directly synthesized it into other various materials, such as mesoporous alumina, bentonite, clay, activated carbon, fly ash, layered silicate, mesoporous carbon, mesoporous sponge‐like TUD‐1, MOFs, nanofibrillated cellulose, porous chitosan beads, resin, glass fiber, polypropylene fiber, polyamide imide hollow fiber, ZSM‐5 zeolite, and ZIF‐8 . The CO 2 capture performances of other materials functionalized with PEI are demonstrated in Table .…”