English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/137304
logo share SHARE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Constant rate thermal analysis of a dehydrogenation reaction

AuthorsPerejón, Antonio ; Pérez-Maqueda, Luis A. ; Sánchez-Jiménez, P.E. ; Criado Luque, J.M. ; Murafa, Nataliya; Subrt, Jan
KeywordsHydrogen absorbing materials
Metal hydrides
Thermal analysis
Issue Date2016
PublisherRoyal Society of Chemistry (UK)
CitationRSC Asvances, 6, 81454-81460 (2016)
AbstractThe Constant Rate Thermal Analysis (CRTA) procedure has been employed for the first time to study the kinetics of MgH2 dehydrogenation by thermogravimetry under high vacuum. CRTA implies controlling the temperature in such a way that the decomposition rate is maintained constant all over the process, employing the mass change as the experimental signal proportional to the reaction rate. The CRTA curves present a higher resolution power to discriminate the kinetic model obeyed by the reaction in comparison with conventional heating rate curves. The combined kinetic analysis has been applied to obtain the kinetic parameters, which show that MgH2 decomposition under high vacuum obeys first-order kinetics (F1). It has been proposed that the dehydrogenation of MgH2 under high vacuum takes place by instantaneous nucleation in the border line of the bidimensional crystallites followed by the growth of the nuclei.
Publisher version (URL)http://dx.doi.org/10.1039/C6RA10157G
Appears in Collections:(ICMS) Artículos
Files in This Item:
File Description SizeFormat 
Paper_CRTA_dehydrogenation.pdf702,03 kBAdobe PDFThumbnail
Show full item record
Review this work

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.