Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 39, Issue 24, Pages 12490-12498Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2014.06.081
Keywords
Hydrogen production; Ammonia decomposition; Co-Mo bimetallic catalyst; Metal amine metallate
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Funding
- Natural Science Foundation of China [21306046, 21374062]
- Shanghai Natural Science Foundation [12ZR1407300]
- China Postdoctoral Science Foundation [2012M520041, 2013T60428]
- Fundamental Research Funds for the Central Universities [WA1214020, WG1213011]
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Two kinds of Co-Mo bimetallic catalysts (i.e., CoMo-I/gamma-Al2O3 and CoMo-II/gamma-Al2O3) prepared by using different active phase precursors as well as Co and Mo monometallic catalysts were used to catalyze ammonia decomposition. The Co-Mo bimetallic catalysts show higher activity than the Co and Mo monometallic catalysts, indicating the synergistic effect between Co and Mo. More interestingly, the CoMo-I/gamma-Al2O3 catalyst using monocomponent metal amine metallate (i.e., Co(en)(3)MoO4) as the active phase precursor exhibits higher activity and stability than the CoMo-II/gamma-Al2O3 using bicomponent Co(NO3)(2) and (NH4)(6)Mo7O24 as the active phase precursor, which could be linked to the higher content of active species CO3Mo3N for the CoMo-I/gamma-Al2O3 catalyst. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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