Annulation of Phenols: Catalytic Behavior of Conventional and 2 D Zeolites

Authors

  • Dr. Maksym V. Opanasenko,

    1. Department of synthesis and catalysis J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of Czech Republic v.v.i Dolejškova 3, 182 23 Prague 8 (Czech Republic), Fax: (+420) 28658 2307
    2. Department of porous materials L.V. Pisarzhevskiy Institute of Physical Chemistry, National Academy of Sciences of Ukraine pr. Nauky 31, 03028 Kiev (Ukraine)
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  • Dr. Mariya V. Shamzhy,

    1. Department of synthesis and catalysis J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of Czech Republic v.v.i Dolejškova 3, 182 23 Prague 8 (Czech Republic), Fax: (+420) 28658 2307
    2. Department of porous materials L.V. Pisarzhevskiy Institute of Physical Chemistry, National Academy of Sciences of Ukraine pr. Nauky 31, 03028 Kiev (Ukraine)
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  • Dr. Changbum Jo,

    1. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 305-701 (Korea)
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  • Prof. Ryong Ryoo,

    1. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 305-701 (Korea)
    2. Department of Chemistry, KAIST, Daejeon 305-701 (Korea)
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  • Prof. Jiří Čejka

    Corresponding author
    1. Department of synthesis and catalysis J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of Czech Republic v.v.i Dolejškova 3, 182 23 Prague 8 (Czech Republic), Fax: (+420) 28658 2307
    • Department of synthesis and catalysis J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of Czech Republic v.v.i Dolejškova 3, 182 23 Prague 8 (Czech Republic), Fax: (+420) 28658 2307===

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Abstract

Catalytic behavior of MFI zeolites differing in thickness of nanosheets and ordering was studied in annulation of phenols, and compared with 3 D zeolites BEA and MFI containing large or medium pores as well as with micro/mesoporous zeolite USY. The highest conversions of phenols studied were achieved over ordered hexagonally mesostructured zeolite with 1.7 nm wall size, followed by materials possessing 2.1 and 2.7 nm of nanosheets thickness. This corresponds to decreasing surface area of materials studied. The preferences of materials with zeolitic layers and high surface areas over bulky zeolites BEA and especially MFI in annulation of phenols is more prominent for substrates with larger kinetic diameters [phenol (0.66 nm)<1-naphthol (0.80 nm)<2-naphthol (0.89 nm)]. USY zeolite exhibited higher conversions (32, 6, 25 % for phenol, 1- and 2-naphthol, respectively, after 300 min time on stream) than BEA (23, 6, 8 %) and MFI (13, 0, 0 %) not overcoming hexagonally mesostructured MFI (45, 36, 55 %).

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