Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 42, Issue 38, Pages 24142-24149Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2017.08.051
Keywords
Ammonia borane; Ruthenium; Alumina nanofibers; Hydrogen generation
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Funding
- Sichuan Youth Science and Technology Foundation [2016JQ0052]
- Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education [LZJ1603]
- Open Foundation of Key Laboratory of Sichuan Province Higher Education System [SWWT2015-2]
- National Natural Science Foundation of China [21207109]
- Scientific Research Fund of Sichuan Provincial Education Department of Sichuan Province [16TD0007]
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Effective catalysts for hydrogen generation from ammonia borane (AB) hydrolysis should be developed for the versatile applications of hydrogen. In this study, ruthenium nano particles (NPs) supported on alumina nanofibers (Ru/Al2O3-NFs) were synthesized by reducing the Ru(III) ions impregnated on Al2O3-NFs during AB hydrolysis. Results showed that the Ru NPs with an average size of 2.9 nm were uniformly dispersed on the Al2O3-NFs support. The as-synthesized Ru/Al2O3-NFs exhibited a high turnover frequency of 327 mol H-2 (mol Ru min)(-1) and an activation energy of 36.1 kJ mol(-1) for AB hydrolysis at 25 degrees C. Kinetic studies showed that the AB hydrolysis catalyzed by Ru/Al2O3-NFs was a first-order reaction with regard to the Ru concentration and a zero-order reaction with respect to the AB concentration. The present work reveals that Ru/Al2O3-NFs show promise as a catalyst in developing a highly efficient hydrogen storage system for fuel cell applications. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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