Alkali Metal-Functionalized Covalent Organic Frameworks for CO₂ Adsorption and CO₂/N₂ Separation

ACS Applied Polymer Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 16, 2025

Covalent organic frameworks (COFs) have become potential candidates for gas purification technology, especially in carbon capture and storage applications. By utilizing strategies such as pore structure design functional modification, COFs been developed to exhibit high selectivity superior adsorption capacity the effective separation of CO2 from industrial waste gases. Notably, alkali metals strong interactions with backbone COFs, which can enhance CO2/N2 performance these porous materials. This study details synthesis two-dimensional COF materials modified acidic groups (TpPa-COOH TpPa-SO3H) via mechanical grinding. Alkali Na, Li, K were introduced into through simple ion exchange reactions, thereby creating metal-modified The impact various on was investigated. Among resulting products, lithiated TpPa-COOH showed highest 2.65 mmol/g at 273 1 bar. may be due smaller atomic size Li that offers larger space. Under same conditions, K-modified TpPa-SO3H exhibited 548, surpasses most reported literature. caused by polarization triggered metals. inference further confirmed computational simulations. work provides a facile method modification achieve performance.

Язык: Английский

Enhanced H2 production via catalytic steam reforming of acetic acid as bio-oil model compound using asymmetric-structured nickel hollow fiber membrane

Journal of Membrane Science, Год журнала: 2024, Номер unknown, С. 123637 - 123637

Опубликована: Дек. 1, 2024

Язык: Английский