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Synthesis of Dicationic Ionic Liquids and their Application in the Preparation of Hierarchical Zeolite Beta

Authors

  • Rajkumar Kore,

    1. Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar-140001, Punjab (India), Fax: (+91) 1881-223395
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  • Dr. Biswarup Satpati,

    1. Surface Physics Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700 064 (India)
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  • Dr. Rajendra Srivastava

    Corresponding author
    1. Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar-140001, Punjab (India), Fax: (+91) 1881-223395
    • Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar-140001, Punjab (India), Fax: (+91) 1881-223395
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Abstract

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Piperidine- and imidazole-based dicatoinic ionic liquids have been developed for the synthesis of zeolite Beta. Hierarchical Beta has a larger surface area and pore volume than conventional Beta. Beta derived from a dicationic ionic liquid exhibited remarkably higher catalytic activity than the conventional Beta. Experimental evidence and DFT calculations suggest that only a suitable conformation of such dicationic ionic liquids is able to form zeolite Beta (see scheme).

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