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首页> 外文期刊>Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics >Mixed-Metal Strategy on Metal-Organic Frameworks (MOFs) for Functionalities Expansion: Co Substitution Induces Aerobic Oxidation of Cyclohexene over Inactive Ni-MOF-74
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Mixed-Metal Strategy on Metal-Organic Frameworks (MOFs) for Functionalities Expansion: Co Substitution Induces Aerobic Oxidation of Cyclohexene over Inactive Ni-MOF-74

机译：用于扩展功能的金属有机框架（MOF）的混合金属策略：Co取代在惰性Ni-MOF-74上诱导环己烯的有氧氧化

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Different amounts of Co-substituted Ni-MOF-74 have been prepared via a post-synthetic metal exchange. Inductively coupled plasma mass spectrometry, powder X-ray diffraction (XRD), N-2 adsorption/desorption, and extended X-ray absorption fine structure (EXAFS) analyses indicated the successful metathesis between Co and Ni in Ni-MOF-74 to form the solid-solution-like mixed-metal Co/NiMOF-74. It was found that introduction of active Co into the Ni-MOF-74 framework enabled the inert Ni-MOF-74 to show activity for cyclohexene oxidation. Since Co was favorably substituted at positions more accessible to the substrate, the mixed-metal Co! Ni-MOF-74 showed superior catalytic performance, compared with pure Co-MOF-74 containing a similar amount of Co. This study provides a facile method to develop solid-solution-like MOFs for heterogeneous catalysis and highlights the great potential of this mixed-metal strategy in the development of MOFs with specific endowed functionalities.
机译：通过后合成金属交换制备了不同量的共取代的Ni-MOF-74。电感耦合等离子体质谱法，粉末X射线衍射（XRD），N-2吸附/解吸以及扩展的X射线吸收精细结构（EXAFS）分析表明，Ni-MOF-74中Co和Ni成功地复分解形成固溶体状的混合金属Co / NiMOF-74。发现将活性Co引入Ni-MOF-74构架使得惰性Ni-MOF-74显示出对环己烯氧化的活性。由于Co在更易于接近基材的位置被有利地取代，因此混合金属Co！与纯Co-MOF-74含类似量的Co相比，Ni-MOF-74表现出优异的催化性能。这项研究提供了一种简便的方法来开发类似固溶体的MOF进行多相催化，并强调了这种混合催化剂的巨大潜力具有特定赋予功能的MOF开发中的金属策略。

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