Ionic Liquids-Functionalized Zeolitic Imidazolate Framework for Carbon Dioxide Adsorption

oleh: Xuyan Song, Jialin Yu, Min Wei, Ran Li, Xi Pan, Guoping Yang, Haolin Tang

Format: Article
Diterbitkan: MDPI AG 2019-07-01

Deskripsi

Ionic-liquid-functionalized zeolitic imidazolate frameworks (ZIF) were synthesized using the co-ligands of 2-methylimidazole and amine-functionalized ionic liquid during the formation process of frameworks. The resulting ionic-liquid-modified ZIF had a specific surface area of 1707 m<sup>2</sup>&#183;g<sup>&#8722;1</sup> with an average pore size of about 1.53 nm. Benefiting from the large surface area and the high solubility of carbon dioxide in ionic-liquid moieties, the synthesized materials exhibited a carbon dioxide adsorption capacity of about 24.9 cm<sup>3</sup>&#183;g<sup>&#8722;1</sup>, whereas it was 16.3 cm<sup>3</sup>&#183;g<sup>&#8722;1</sup> for pristine ZIF at 25 &#176;C under 800 mmHg. The results demonstrate that the modification of porous materials with ionic liquids could be an effective way to fabricate solid sorbents for carbon dioxide adsorption.