Conversion of CO2 from Air into Methanol Using a Polyamine and a Homogeneous Ruthenium Catalyst

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• 作者：Jotheeswari Kothandaraman ; Alain Goeppert ; Miklos Czaun ; George A. Olah ; G. K. Surya Prakash
• 刊名：Journal of the American Chemical Society
• 出版年：2016
• 出版时间：January 27, 2016
• 年：2016
• 卷：138
• 期：3
• 页码：778-781
• 全文大小：296K
• ISSN：1520-5126

文摘

A highly efficient homogeneous catalyst system for the production of CH₃OH from CO₂ using pentaethylenehexamine and Ru-Macho-BH (1) at 125–165 °C in an ethereal solvent has been developed (initial turnover frequency = 70 h^–1 at 145 °C). Ease of separation of CH₃OH is demonstrated by simple distillation from the reaction mixture. The robustness of the catalytic system was shown by recycling the catalyst over five runs without significant loss of activity (turnover number > 2000). Various sources of CO₂ can be used for this reaction including air, despite its low CO₂ concentration (400 ppm). For the first time, we have demonstrated that CO₂ captured from air can be directly converted to CH₃OH in 79% yield using a homogeneous catalytic system.