Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 40, Issue 45, Pages 15521-15528Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2015.09.095
Keywords
RuCuNi/CNTs; Heterogeneous catalysis; Ammonia borane; Releasing hydrogen
Categories
Funding
- National Nature Science Foundations [21301053]
- Natural Science Fund for Creative Research Groups of Hubei Province of China [2014CFA015]
- Hubei College Students' Innovation Training Program of China [201410512024]
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Trimetallic RuCuNi nanoparticles (NPs) were successfully immobilized on carbon nanotubes (CNTs) using a simple liquid impregnation-reduction method, and the RuCuNi/CNTs catalyst was applied to the hydrolytic dehydrogenation of ammonia borane (AB) at room temperature. All the catalyst activity from different metal Ru, Cu, Ni supported on CNTs have been detailedly investigated. Well dispersed RuCuNi nanoparticles are stabilized and immobilized by CNTs. The research results show that the RuCuNi/CNTs nanomaterials exhibit a higher catalytic activity than those of monometallic Ru, Cu, Ni and bimetallic RuCu, RuNi counterparts loadings as well as RuCuNi NPs, owing to the strong trimetallic synergistic effects, uniform distribution of nanoparticles on the surface of CNTs and bifunctional effects between the RuCuNi nanoparticles and the support of CNTs. The activation energy (Ea) and the turn over frequency (TOP) of this RuCuNi/CNTs catalyst are 36.67 kJ/mol and 311.15 mol H-2 min(-1) (mol Ru)1, respectively. In addition, the catalytic stability during the recycling tests also has an outstanding performance for the hydrolysis of AB. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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