Group 4 oxides supported Rhodium(0) catalysts in hydrolytic dehydrogenation of ammonia borane

Date

2019-05-01

Author

Tonbul, Yalcin
Akbayrak, Serdar
Özkar, Saim

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Rh3+ ions are first impregnated on Group 4 metal oxides (TiO2, ZrO2, HfO2) in aqueous solution and, then reduced with aqueous solution of NaBH4 to form rhodium(0) nanoparticles (NPs) on the oxide surface. The analyses reveal that Rh(0) NPs are highly dispersed on the surface of TiO2, ZrO2, HfO2. Rh-0/MO2 (M: Ti, Zr, Hf) NPs have high activity and reusability in releasing H-2 from the hydrolysis of ammonia borane with an initial turnover frequency of 643, 198, and 188 min(-1), respectively, at 25.0 +/- 0.1 degrees C. The reusability of Rh-0/ZrO2 and Rh-0/HfO2 catalysts is higher than that of the Rh-0/TiO2 catalyst. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Subject Keywords

Fuel Technology, Renewable Energy, Sustainability and the Environment, Energy Engineering and Power Technology, Condensed Matter Physics

URI

https://hdl.handle.net/11511/38936

Journal

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

DOI

https://doi.org/10.1016/j.ijhydene.2018.11.162

Collections

Department of Chemistry, Article

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Citation Formats

Y. Tonbul, S. Akbayrak, and S. Özkar, “Group 4 oxides supported Rhodium(0) catalysts in hydrolytic dehydrogenation of ammonia borane,” INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, pp. 14164–14174, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38936.