Ru-N-C Hybrid Nanocomposite for Ammonia Dehydrogenation: Influence of N-doping on Catalytic Activity
AbstractFor application to ammonia dehydrogenation, novel Ru-based heterogeneous catalysts, Ru-N-C and Ru-C, were synthesized via simple pyrolysis of a mixture of RuCl3·6H2O and carbon black with or without dicyandiamide as a nitrogen-containing precursor at 550 °C. Characterization of the prepared Ru-N-C and Ru-C catalysts via scanning transmission electron microscopy, in conjunction with energy dispersive X-ray spectroscopy, indicated the formation of hollow nanocomposites in which the average sizes of the Ru nanoparticles were 1.3 nm and 5.1 nm, respectively. Compared to Ru-C, the Ru-N-C nanocomposites not only proved to be highly active for ammonia dehydrogenation, giving rise to a NH3 conversion of >99% at 550 °C, but also exhibited high durability. X-ray photoelectron spectroscopy revealed that the Ru active sites in Ru-N-C were electronically perturbed by the incorporated nitrogen atoms, which increased the Ru electron density and ultimately enhanced the catalyst activity. View Full-Text
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Hien, N.T.B.; Kim, H.Y.; Jeon, M.; Lee, J.H.; Ridwan, M.; Tamarany, R.; Yoon, C.W. Ru-N-C Hybrid Nanocomposite for Ammonia Dehydrogenation: Influence of N-doping on Catalytic Activity. Materials 2015, 8, 3442-3455.
Hien NTB, Kim HY, Jeon M, Lee JH, Ridwan M, Tamarany R, Yoon CW. Ru-N-C Hybrid Nanocomposite for Ammonia Dehydrogenation: Influence of N-doping on Catalytic Activity. Materials. 2015; 8(6):3442-3455.Chicago/Turabian Style
Hien, Nguyen T.B.; Kim, Hyo Y.; Jeon, Mina; Lee, Jin H.; Ridwan, Muhammad; Tamarany, Rizcky; Yoon, Chang W. 2015. "Ru-N-C Hybrid Nanocomposite for Ammonia Dehydrogenation: Influence of N-doping on Catalytic Activity." Materials 8, no. 6: 3442-3455.