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Multilayered Supported Ionic Liquids as Catalysts for Chemical Fixation of Carbon Dioxide: A High‐Throughput Study in Supercritical Conditions
Author(s) -
Aprile Carmela,
Giacalone Francesco,
Agrigento Paola,
Liotta Leonarda F.,
Martens Johan A.,
Pescarmona Paolo P.,
Gruttadauria Michelangelo
Publication year - 2011
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201100446
Subject(s) - ionic liquid , catalysis , supercritical fluid , bromide , supercritical carbon dioxide , mesoporous material , ionic bonding , carbon fixation , chemical engineering , materials science , mesoporous silica , chemistry , carbon dioxide , inorganic chemistry , organic chemistry , ion , engineering
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.