期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 262, 期 -, 页码 98-105出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2017.11.024
关键词
ZIF-8; Nanoparticles; CO2 adsorption; Solvent assisted ligand exchange
类别
资金
- Syngaschem BV
The organic linkers of Zeolitic Imidazole Framework-8 (ZIF-8) nanoparticles influence its adsorption of CO2 gases. Solvent Assisted Ligand Exchange (SALE) was successfully used to exchange similar to 13% of the 2-methylimidazolate linkers of ZIF-8 nanoparticles with 2-mercaptobenzimidazole, 2-aminobenzimidazole or 2-phenylimidazole. With 2-nitroimidiazole similar to 67% exchange was achieved, since no bulky benzyl groups were present During SALE treatment the SOD (sodalite zeolitic framework type) topology of ZIF-8 was maintained, but after the higher exchange percentage of 2-nitroimidazole an frl topology was observed. Up to a two-fold increase in CO2 adsorption was recorded after SALE of ZIF-8 with imidazole derivatives containing NO2 and SH electron withdrawing functional groups. In the case of 2-aininobensimiciazole only a moderate increase in CO2 adsorption was observed.
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