A multifactor study of catalyzed hydrolysis of solid NaBH4 on cobalt nanoparticles: Thermodynamics and kinetics
| Autor: | Aline Auroux, Anthony Garron, Philippe Miele, Jérôme Andrieux, Dariusz Swierczynski, Christelle Goutaudier, Bernard Bonnetot, Laetitia Laversenne, Simona Bennici |
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| Přispěvatelé: | Laboratoire des Multimatériaux et Interfaces (LMI), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC) |
| Rok vydání: | 2009 |
| Předmět: |
Kinetics
Inorganic chemistry Solid sodium borohydride Energy Engineering and Power Technology Nanoparticle chemistry.chemical_element 02 engineering and technology Activation energy 010402 general chemistry 7. Clean energy 01 natural sciences Catalysis Hydrogen storage Hydrolysis Hydrogen production Hydrolysis reaction Renewable Energy Sustainability and the Environment Chemistry Cobalt [CHIM.CATA]Chemical Sciences/Catalysis 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Fuel Technology Thermodynamics 0210 nano-technology |
| Zdroj: | International Journal of Hydrogen Energy International Journal of Hydrogen Energy, Elsevier, 2009, 34, pp.938-951. ⟨10.1016/j.ijhydene.2008.09.102⟩ |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2008.09.102 |
| Popis: | International audience; In the present work, hydrogen generation through hydrolysis of a NaBH4(s)/catalyst(s) solid mixture was realized for the first time as a solid/liquid compact hydrogen storage system using Co nanoparticles as a model catalyst. The performance of the system was analysed from both the thermodynamic and kinetic points of view and compared with the classical catalyzed hydrolysis of a NaBH4 solution. The kinetic analysis of the NaBH4(s)/catalyst(s)/H2O(l) system shows that the reaction is first order with respect to the catalyst concentration, and the activation energy equal to 35 kJ molNaBH4−1. Additionally, calorimetric measurements of the heat evolved during the hydrolysis of NaBH4 solutions evidence the global process energy (−217 kJ molNaBH4−1). Characterization of the cobalt nanoparticles before and after the hydrolysis associated with the calorimetric measurements suggests the “in situ” formation of a catalytically active CoxB phase through “reduction” of an outer protective oxide layer that is regenerated at the end of reaction. |
| Databáze: | OpenAIRE |
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