Amino Acid-Based Ionic Liquids-Aided CO2 Hydrogenation to Methanol
Ayeshe Moazezbarabadi1, Anja Kammer1, Elisabetta Alberico1,2
1Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany.
Abstract:
This study explored the use of amino acid-based ionic liquids to facilitate the conversion of carbon dioxide (CO2) into methanol through catalytic hydrogenation. Combining tetrabutylammonium L-argininate (TBA⋅Arg) with the ruthenium Ru-MACHO-BH complex allowed achieving significant yields of methanol under optimized conditions, with a turnover number (TON) up to 700. By systematically varying key reaction parameters, we demonstrated that the TBA⋅Arg ionic liquid promotes the efficient hydrogenation pathway leading to methanol formation, thus offering a sustainable approach to CO2 valorization. These findings underscore the potential of amino acid-based ionic liquids in catalyzing the transformation of CO2 into valuable chemicals, contributing to carbon mitigation efforts.
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