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Issue 45, 2017
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Hollow and microporous catalysts bearing Cr(III)–F porphyrins for room temperature CO2 fixation to cyclic carbonates

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Abstract

Hollow and microporous metal free/Cr-porphyrin networks were prepared via the Sonogashira coupling of metal-free or Cr-tetra(4-ethynylphenyl) porphyrins and 1,4-diiodobenzene on the surface of silica templates followed by silica etching. Zinc was introduced into a hollow and microporous metal free porphyrin network (H–MPN) through post-synthetic modification to form a H–MZnPN. Hollow and microporous Cr(III)–F porphyrin networks (H–MCrPNs) showed the best catalytic activities in room temperature CO2 fixation with epoxides to cyclic carbonates. In addition, the H–MCrPN could be reused at least for five runs, maintaining the original catalytic activity. The good performance of the H–MCrPN is attributed to its microporosity, the shortened diffusion pathways for substrates due to the hollow structure, and the efficient Lewis acidic activity of Cr(III)–F moieties.

Graphical abstract: Hollow and microporous catalysts bearing Cr(iii)–F porphyrins for room temperature CO2 fixation to cyclic carbonates

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Publication details

The article was received on 28 Jul 2017, accepted on 22 Oct 2017 and first published on 23 Oct 2017


Article type: Paper
DOI: 10.1039/C7TA06655D
Citation: J. Mater. Chem. A, 2017,5, 23612-23619
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    Hollow and microporous catalysts bearing Cr(III)–F porphyrins for room temperature CO2 fixation to cyclic carbonates

    M. H. Kim, T. Song, U. R. Seo, J. E. Park, K. Cho, S. M. Lee, H. J. Kim, Y. Ko, Y. K. Chung and S. U. Son, J. Mater. Chem. A, 2017, 5, 23612
    DOI: 10.1039/C7TA06655D

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