Development and Characterization of Polyethylenimine-Infiltrated Mesoporous Silica Foam Pellets for CO₂ Capture.

ABSTRACT: Polyethylenimine (PEI) has been shown to be promising for direct air capture (DAC) of carbon dioxide and has potential for commercial scale-up globally. Laboratory scale processes include multiple steps, such as mixing, solvent extraction, vacuum application, sonication, and various flushes and activation steps. It is critical to properly control these operating parameters to achieve higher capture capacity as a result of the optimized material configuration. This study adopts previously published pelletization processes for PEI-infiltrated mesoporous foam silica (mesoporous silica foam) to uncover the adsorption mechanisms and optimize the associated fabrication steps, such as sonication, to achieve higher sorbent productivity. A high capture capacity was achieved at 46 °C for 75 wt % PEI

SUBMITTER: Komma RB 

PROVIDER: S-EPMC11292850 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature