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Issue 40, 2017
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A new strongly paramagnetic cerium-containing microporous MOF for CO2 fixation under ambient conditions

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Abstract

Metal organic frameworks (MOFs) bearing multicarboxylate linkers are in great demand for designing robust heterogeneous catalysts. A new microporous Ce(III)-based metal organic framework (Ce2NDC3) has been synthesized under solvothermal conditions, which showed strong paramagnetism and a CO2 uptake capacity of 1.64 mmol g−1 (7.23 weight%) at 273 K. The Ce2NDC3 showed high catalytic activity in CO2 fixation for the synthesis of cyclic carbonates with a maximum yield of 92% at ambient temperature and pressure. This rare earth metal-based MOF has been well characterized by single crystal X-ray diffraction, PXRD, N2 adsorption/desorption, UHR-TEM, FESEM, FTIR, 13C MAS NMR and TGA. Here, we have carried out magnetic analysis, which revealed that the Ce(III) in this MOF exhibited 2F5/2 magnetism in the ground state. The Ce2NDC3 catalyst showed high recycling efficiency in CO2 fixation reactions, together with retention of the MOF structure after several rounds of reuse. Presumably, the presence of acidic Ce(III) metal ions and microporosity in the coordinated polymer network is responsible for the high catalytic activity.

Graphical abstract: A new strongly paramagnetic cerium-containing microporous MOF for CO2 fixation under ambient conditions

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Publication details

The article was received on 05 Jun 2017, accepted on 18 Sep 2017 and first published on 19 Sep 2017


Article type: Paper
DOI: 10.1039/C7DT02040F
Citation: Dalton Trans., 2017,46, 13783-13792
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    A new strongly paramagnetic cerium-containing microporous MOF for CO2 fixation under ambient conditions

    S. K. Das, S. Chatterjee, S. Bhunia, A. Mondal, P. Mitra, V. Kumari, A. Pradhan and A. Bhaumik, Dalton Trans., 2017, 46, 13783
    DOI: 10.1039/C7DT02040F

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