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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >A new strongly paramagnetic cerium-containing microporous MOF for CO2 fixation under ambient conditions
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A new strongly paramagnetic cerium-containing microporous MOF for CO2 fixation under ambient conditions

机译：在环境条件下的CO 2固定的一种新的含有含挥发铈的微孔MOF

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摘要

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, N-2 adsorption/desorption, UHR-TEM, FESEM, FTIR, C-13 MAS NMR and TGA. Here, we have carried out magnetic analysis, which revealed that the Ce(III) in this MOF exhibited F-2(5/2) 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.
机译：金属有机框架（MOF）轴承多羧酸盐接头是设计稳健的异构催化剂的需求。在溶剂热条件下合成了一种新的微孔Ce（III）基础金属有机骨架（CE2NDC3），其显示出强的顺磁性和1.64mmol g（-1）（7.23重量％）的CE2NDC3的CE2ND3在CO 2固定中显示出高催化活性，用于在环境温度和压力下合成环状碳酸盐，最大收率为92％。这种稀土化金属基MOF精力以合的是单晶X射线衍射，PXRD，N-2吸附/解吸，UHR-TEM，FESEM，FTIR，C-13Mas NMR和TGA。在这里，我们进行了磁性分析，这揭示了该MOF中的CE（III）在地面呈现F-2（5/2）磁性。 CE2NDC3催化剂在CO 2固定反应中显示出高的回收效率，以及在几轮重用后保持MOF结构。据推测，在协调聚合物网络中存在酸性Ce（III）金属离子和微孔孔负责高催化活性。

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    Das Sabuj Kanti; Chatterjee Sauvik; Bhunia Subhajit; Mondal Abhishake; Mitra Partha; Kumari Vandana; Pradhan Anirban; Bhaumik Asim;

  • 作者单位

    Indian Assoc Cultivat Sci Dept Mat Sci 2A &

    2B Raja SC Mullick Rd Kolkata 700032 India;

    Indian Assoc Cultivat Sci Dept Mat Sci 2A &

    2B Raja SC Mullick Rd Kolkata 700032 India;

    Indian Assoc Cultivat Sci Res Unit 2A &

    2B Raja SC Mullick Rd Kolkata 700032 India;

    Ctr Rech Paul Pascal CNRS UPR 8641 Res Team Mol Mat &

    Magnetism 115 Ave Dr A Schweitzer F-33600 Pessac France;

    Indian Assoc Cultivat Sci Dept Inorgan Chem 2A &

    2B Raja SC Mullick Rd Kolkata 700032 India;

    Indian Assoc Cultivat Sci Dept Mat Sci 2A &

    2B Raja SC Mullick Rd Kolkata 700032 India;

    Indian Assoc Cultivat Sci Res Unit 2A &

    2B Raja SC Mullick Rd Kolkata 700032 India;

    Indian Assoc Cultivat Sci Dept Mat Sci 2A &

    2B Raja SC Mullick Rd Kolkata 700032 India;

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  • 正文语种 eng
  • 中图分类 化学;无机化学;
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