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Oxidative Dehydrogenation of Ethylbenzene into Styrene by Fe-Graphitic Catalysts
Seok-Jin Kim1, Gao-Feng Han1, Sun-Min Jung1
1School of Energy and Chemical Engineering/Center for Dimension-Controllable Organic Frameworks , Ulsan National Institute of Science and Technology (UNIST) , 50 UNIST , Ulsan 44919 , Republic of Korea.
Abstract:
Carbon-based catalysts have attracted much attention for the dehydrogenation (DH) of organic molecules, due to their rich active sites, high conversion efficiency, and selectivity. However, because of their poor stability at high operation temperature and relatively high cost, their practical applications have been limited. Here, we report a simple ball-milling-induced mechanochemical reaction which can introduce iron (Fe) and different functional groups (mostly stable aromatic C═O after heat-treatment) along the edges of graphitic nanoplatelets. The resulting Fe-graphitic nanoplatelets (Fe-XGnPs, X = H, C, N, or V) provide active sites for the oxidative dehydrogenation (ODH) of ethylbenzene into styrene. Among them, Fe-NGnPs (X = N) displayed the highest performance for styrene production at low temperature (∼11.13 mmol g-1 h-1, 450 °C) with high selectivity and durability.
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