Synthesis and high-throughput testing of multilayered supported ionic liquid catalysts for the conversion of CO2 and epoxides into cyclic carbonates

Paola Agrigento, Syed M. Al-Amsyar, Benjamin Sorée, Masoumeh Taherimehr, Michelangelo Gruttadauria, Carmela Aprile, Paolo P. Pescarmona

Résultats de recherche: Contribution à un journal/une revueArticleRevue par des pairs

Résumé

Multilayered covalently supported ionic liquid phase (mlc-SILP) materials were synthesised by grafting different bis-vinylimidazolium salts on thiol-functionalised silica. These materials, which contain a cross-linked oligomeric network of imidazolium units, were characterised and tested as catalysts for the reaction of carbon dioxide with various epoxides to produce cyclic carbonates. The materials prepared by supporting a bis-imidazolium iodide salt with xylene or octane as a linker between the imidazolium units were identified as the most active catalysts and displayed high turnover numbers and improved productivity compared to known supported ionic liquid catalysts. The most promising mlc-SILP catalysts were further studied to tune the reaction conditions towards optimum catalytic performance and to investigate their versatility with different substrates and their reusability. The rapid and parallel screening of the catalysts was efficiently carried out by means of high-throughput (HT) experimentation. This journal is

langue originaleAnglais
Pages (de - à)1598-1607
Nombre de pages10
journalCatalysis Science and Technology
Volume4
Numéro de publication6
Les DOIs
Etat de la publicationPublié - 2014

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