Multilayered Supported Ionic Liquids as Catalysts for Chemical Fixation of Carbon Dioxide: A High-Throughput Study in Supercritical Conditions

Authors

  • Prof. Carmela Aprile,

    1. Centre for Surface Chemistry and Catalysis, K.U. Leuven, Kasteelpark Arenberg 23, 3001 Heverlee (Belgium), Fax: (+32) 16321998
    2. Département de Chimie, Unité de Chimie des Nanomatériaux (UCNANO), Facultés Universitaires Notre-Dame de la Paix, Rue de Bruxelles 61, 5000 Namur (Belgium)
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  • Dr. Francesco Giacalone,

    1. Dipartimento STEMBIO, sez. Chimica Organica ‘‘E. Paternò'', Università di Palermo, Viale delle Scienze, Pad. 17, 90128, Palermo (Italy), Fax: (+39) 091 596825
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  • Paola Agrigento,

    1. Centre for Surface Chemistry and Catalysis, K.U. Leuven, Kasteelpark Arenberg 23, 3001 Heverlee (Belgium), Fax: (+32) 16321998
    2. Dipartimento STEMBIO, sez. Chimica Organica ‘‘E. Paternò'', Università di Palermo, Viale delle Scienze, Pad. 17, 90128, Palermo (Italy), Fax: (+39) 091 596825
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  • Dr. Leonarda F. Liotta,

    1. ISMN-CNR, Via Ugo la Malfa 153, 90146 Palermo (Italy)
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  • Prof. Johan A. Martens,

    1. Centre for Surface Chemistry and Catalysis, K.U. Leuven, Kasteelpark Arenberg 23, 3001 Heverlee (Belgium), Fax: (+32) 16321998
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  • Prof. Paolo P. Pescarmona,

    Corresponding author
    1. Centre for Surface Chemistry and Catalysis, K.U. Leuven, Kasteelpark Arenberg 23, 3001 Heverlee (Belgium), Fax: (+32) 16321998
    • Centre for Surface Chemistry and Catalysis, K.U. Leuven, Kasteelpark Arenberg 23, 3001 Heverlee (Belgium), Fax: (+32) 16321998
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  • Prof. Michelangelo Gruttadauria

    Corresponding author
    1. Dipartimento STEMBIO, sez. Chimica Organica ‘‘E. Paternò'', Università di Palermo, Viale delle Scienze, Pad. 17, 90128, Palermo (Italy), Fax: (+39) 091 596825
    • Dipartimento STEMBIO, sez. Chimica Organica ‘‘E. Paternò'', Università di Palermo, Viale delle Scienze, Pad. 17, 90128, Palermo (Italy), Fax: (+39) 091 596825
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Abstract

Multilayered, covalently supported ionic liquid phase (mlc-SILP) materials were synthesized by using a new approach based on the grafting of bis-vinylimidazolium salts on different types of silica or polymeric supports. The obtained materials were characterized and tested as catalysts in the reaction of supercritical carbon dioxide with various epoxides to produce cyclic carbonates. The material prepared by supporting a bromide bis-imidazolium salt on the ordered mesoporous silica SBA-15 was identified as the most active catalyst for the synthesis of cyclic carbonates and displayed improved productivity compared with known supported ionic liquid catalysts. The catalyst retained its high activity upon reuse in consecutive catalytic runs. This is the first report of the application of mlc-SILP materials as catalysts in a reaction for the fixation of carbon dioxide. Rapid, parallel screening and comparison of the catalysts was performed by means of high-throughput experimentation.

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