Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.9/2632
Título: Kinetic modeling of self-hydrolysis of aqueous NaBH4 solutions by model-based isoconversional method 
Autor: Retnamma, Rajasree
Novais, Augusto Q.
Rangel, C. M.
Yu, Lin
Matthews, Michael A.
Palavras-chave: Hydrogen production
Isoconversional method
Kinetics
Self-hydrolysis
Sodium borohydride
Data: 2014
Editora: Elsevier
Citação: Retnamma, R.; Novais, A.Q.; Rangel, C.M.; Yu, L.; Matthews, M.A. - Kinetic modeling of self-hydrolysis of aqueous NaBH4 solutions by model-based isoconversional method. In: International Journal of Hydrogen Energy, 2014, Vol. 39, p. 6567-6576
Resumo: The present work reports the kinetic modeling of self-hydrolysis of non-buffered, nonstabilized NaBH4 solutions by model-based isoconversional method. The overall kinetics is described by a ‘reaction-order’ model in a practical operating window of 10-20 wt% NaBH4 solutions at 25-80 ºC and 0-50% conversions. The apparent activation energy and preexponential factor are interrelated through a kinetic compensation effect (KCE). The apparent reaction order remains constant at a given temperature irrespective of extent of conversion and decreases with increase in temperature. It decreases from first-order to 0.26 with increase in temperature from 25 to 80 ºC. 
URI: http://hdl.handle.net/10400.9/2632
ISSN: 0360-3199
Versão do Editor: http://dx.doi.org/10.1016/j.ijhydene.2014.02.035
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