Atoms and Nanoparticles of Transition Metals as Catalysts for Hydrogen Desorption from Magnesium Hydride
Joint Authors
Checchetto, R.
Miotello, A.
Bazzanella, N.
Source
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-09-29
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Engineering Sciences and Information Technology
Chemistry
Civil Engineering
Abstract EN
The hydrogen desorption kinetics of composite materials made of magnesium hydride with transition metal additives (TM: Nb, Fe, and Zr) was studied by several experimental techniques showing that (i) a few TM at.% concentrations catalyse the H2 desorption process, (ii) the H2 desorption kinetics results stabilized after a few H2 sorption cycles when TM atoms aggregate by forming nanoclusters; (iii) the catalytic process occurs also at TM concentration as low as 0.06 at.% when TM atoms clustering is negligible, and (iv) mixed Fe and Zr additives produce faster H2 desorption kinetics than single additive.
The improved H2 desorption kinetics of the composite materials can be explained by assuming that the interfaces between the MgH2 matrix and the TM nanoclusters act as heterogeneous sites for the nucleation of the Mg phase in the MgH2 matrix and promote the formation of fast diffusion channels for H migrating atoms.
American Psychological Association (APA)
Bazzanella, N.& Checchetto, R.& Miotello, A.. 2010. Atoms and Nanoparticles of Transition Metals as Catalysts for Hydrogen Desorption from Magnesium Hydride. Journal of Nanomaterials،Vol. 2011, no. 2011, pp.1-11.
https://search.emarefa.net/detail/BIM-504617
Modern Language Association (MLA)
Bazzanella, N.…[et al.]. Atoms and Nanoparticles of Transition Metals as Catalysts for Hydrogen Desorption from Magnesium Hydride. Journal of Nanomaterials No. 2011 (2011), pp.1-11.
https://search.emarefa.net/detail/BIM-504617
American Medical Association (AMA)
Bazzanella, N.& Checchetto, R.& Miotello, A.. Atoms and Nanoparticles of Transition Metals as Catalysts for Hydrogen Desorption from Magnesium Hydride. Journal of Nanomaterials. 2010. Vol. 2011, no. 2011, pp.1-11.
https://search.emarefa.net/detail/BIM-504617
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-504617