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Annulation of phenols with methylbutenol over MOFs: The role of catalyst structure and acid strength in producing 2,2-dimethylbenzopyran derivatives

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    0446841 - ÚFCH JH 2016 RIV NL eng J - Článek v odborném periodiku
    Shamzhy, Mariya - Opanasenko, Maksym - Garcia, H. - Čejka, Jiří
    Annulation of phenols with methylbutenol over MOFs: The role of catalyst structure and acid strength in producing 2,2-dimethylbenzopyran derivatives.
    Microporous and Mesoporous Materials. Roč. 202, JAN 2015 (2015), s. 297-302. ISSN 1387-1811. E-ISSN 1873-3093
    Grant CEP: GA ČR GA14-07101S
    Institucionální podpora: RVO:61388955
    Klíčová slova: metal-organic frameworks * acidity * annulation
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 3.349, rok: 2015

    The catalytic behavior of metal-organic frameworks of different structures (Fe(BTC), MIL-100(Fe), MIL-100(Cr) and Cu-3(BTC)(2)) was investigated in annulation reaction between 2-methyl-3-buten-2-ol and phenols differing in size (phenol, 2-naphthol). MIL-100(Fe) possessing intermediate Lewis acidity, perfect crystalline structure, and the highest S-BET surface area showed the highest activity (TOF = 0.7 and 1.4h(-1) for phenol and 2-naphthol, respectively) and selectivities to target benzopyran (45% and 65% at 16% of phenol and 2-naphthol conversion, respectively). The increasing strength of Lewis acid centers for MIL-100(Cr) was found to result in the dramatically decreased activity of the catalyst, while negligible conversion of phenols was found over Fe(BTC), characterized by a less ordered framework. (C) 2014 Elsevier Inc. All rights reserved.
    Trvalý link: http://hdl.handle.net/11104/0248804

     
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