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Aluminium based binary catalytic system for the solvent free conversion of CO₂ to carbonates with high activity and selectivity
- Ma, Ran, Sun, Haojie, Cui, Yuanzhi
- RSC advances 2018 v.8 no.20 pp. 11145-11149
- acidity, aluminum, carbon dioxide, carbon dioxide fixation, carbonates, catalysts, catalytic activity, epoxides, hydrogen bonding, kojic acid, ligands, solvents
- An easily prepared and low-cost aluminium based metal complex catalyst was prepared using kojic acid (Hkoj) as a ligand, and this developed oxo-coordinated Al(koj)₃ complex showed high activity and selectivity for the CO₂ fixation reaction with epoxides under mild conditions without any organic solvents. Various cyclic carbonates were obtained in excellent yields (up to 99%). This stable catalytically active Al(koj)₃ has strong Lewis acidity for the activation of epoxides, and meanwhile the hydroxy group in Al(koj)₃ may play a role in boosting the catalytic activity through possible hydrogen bonding interactions with the epoxide.