Amino Acid-Based Ionic Liquids-aided CO2 Hydrogenation to Methanol.

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. By systematically varying key reaction parameters, we demonstrate 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.