Boosting CO < sub > 2 < /sub > chemical fixation over MOF-808 by the introduction of functional groups and defective Zr sites

Chem Commun (Camb). 2024 Feb 27. doi: 10.1039/d3cc06154j. Online ahead of print.ABSTRACTCO2 cycloaddition has emerged as a promising approach for producing value-added cyclocarbonates and mitigating greenhouse gas emissions. Although MOF-808 serves as a stable catalyst for cycloaddition, its limited activity constrains broader applications. Through the modification with a fluoride group via a ligand exchange method, F-MOF-808-1.5 exhibits exceptional performance, achieving a 98.8% conversion with 97.8% selectivity to epichlorohydrin carbonate-marking a substantial 100% improvement compared to pristine MOF-808. The defective Zr sites and the electron-withdrawing groups synergistically promote the ring opening of epoxides. Furthermore, the catalyst demonstrates high stability over multiple reaction cycles. Notably, without adding solvents and co-catalysts, F-MOF-808-1.5 outperforms most reported MOF-based catalysts.PMID:38411003 | DOI:10.1039/d3cc06154j

Source: Chemical Communications - February 27, 2024 Category: Chemistry Authors: Minghui Zhou Zhengyan Qu Jiuxuan Zhang Hong Jiang Zhenchen Tang Rizhi Chen Source Type: research