Journal of Catalysis, Vol.370, 357-363, 2019
Heterogeneous iron containing carbon catalyst (Fe-N/C) for epoxidation with molecular oxygen
Pyrolized transition metal and nitrogen containing carbon materials (M-N/C) have shown promising activities as electrocatalysts for oxygen reduction reactions (ORR) in fuel cell cathodes. Similar materials have recently gained interest as heterogeneous catalysts. We report that ORR-active heterogeneous M-N/C materials can catalyze the chemical epoxidation of olefins with molecular oxygen and two equivalents of aldehyde at room temperature and ambient pressure. The observed yield and selectivity is higher than that for homogeneous analogues and the catalysts achieve TOF > 2700 h(-1) and TON > 16,000. The ability to recycle the catalyst several times is also demonstrated. (C) 2019 Elsevier Inc. All rights reserved.