Details

Autor(en) / Beteiligte

• Liang, Jun
• Chen, Rui-Ping
• Wang, Xiu-Yun
• Liu, Tao-Tao
• Wang, Xu-Sheng
• Huang, Yuan-Biao
• Cao, Rong

Titel

Postsynthetic ionization of an imidazole-containing metal–organic framework for the cycloaddition of carbon dioxide and epoxides† †Electronic supplementary information (ESI) available: General comments, syntheses and characterizations of the MOFs mentioned in the manuscript, details of the single crystal diffraction experiments, PXRD, TG and additional figures. CCDC 1499016. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c6sc04357g Click here for additional

Ist Teil von

• Chemical science (Cambridge), 2016-11, Vol.8 (2), p.1570-1575

Ort / Verlag

Royal Society of Chemistry

Erscheinungsjahr

2016

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• A bifunctional imidazolium functionalized Zr-based metal–organic framework, (I – )Meim-UiO-66, was successfully prepared, which can serve as an efficient heterogeneous catalyst towards the capture and coupling of CO 2 with epoxides. A bifunctional imidazolium functionalized zirconium metal–organic framework (Zr-MOF), (I – )Meim-UiO-66 ( 2 ), was successfully prepared from the imidazole-containing Zr-MOF Im-UiO-66 ( 1 ) by a post-synthetic modification (PSM) method. It was found that the crystal size and pore features of the imidazole-containing 1 could be tuned at the nanoscale. The bifunctional MOF 2 , containing Brønsted acid sites and iodide ions, was shown to be an efficient and recyclable heterogeneous catalyst for the cycloaddition of carbon dioxide (CO 2 ) with epoxides, without the use of any co-catalyst, at ambient pressure. The solvent-free synthesis of the cyclic carbonate from CO 2 and an epoxide was monitored by in situ Fourier transform infrared spectroscopy (FT-IR) and an acid/base synergistic catalysis mechanism was proposed. We hope that our strategy provides an effective approach for the introduction of functional N -heterocyclic groups into MOFs for potential applications.