In this article, we report a series of hexanuclear rare-earth MOFs based on Ce (III) and 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin, namely Ce-PCN-224, with a new zln topology through linker induce strategy. Ce-PCN-224 exhibits permanent porosity, high water and thermal stabilities, and the ability to adsorb dye molecules in the aqueous environment. Moreover, after post-metallation with Fe, Co, and Ni, Ce-PCN-224(Fe) and Ce-PCN-224(Co) were proved to be efficient heterogeneous catalysts for the cycloaddition of CO₂ with epoxides, attributed to the combination of multiple Lewis acidic sites.

中文翻译：

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通过接头诱导CO ₂捕获和转化策略构建六核Ce(III)金属-卟啉框架

在本文中，我们报告了一系列基于 Ce (III) 和 5,10,15,20-四（4-羧基苯基）卟啉的六核稀土 MOF，即 Ce-PCN-224，通过新的zln拓扑结构链接器诱导策略。Ce-PCN-224 具有永久孔隙率、高水稳定性和热稳定性，以及在水性环境中吸附染料分子的能力。此外，在用 Fe、Co 和 Ni 后金属化后，Ce-PCN-224(Fe) 和 Ce-PCN-224(Co) 被证明是 CO ₂与环氧化物环加成的有效多相催化剂，归因于多个路易斯酸性位点的组合。