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Issue 7, 2015
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Modelling and evaluation of hydrogen desorption kinetics controlled by surface reaction and bulk diffusion for magnesium hydride

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Abstract

The ‘shrinking core’ model has been applied for the evaluation of hydrogen desorption kinetics during decomposition of magnesium hydride. According to our estimation, the full desorption time is expected to have a quadratic dependence on the size of powder particles, if the bulk diffusion of hydrogen atoms in magnesium is a rate controlling step. However, for the actual diffusion rate for hydrogen in magnesium bulk the diffusion cannot significantly influence the overall desorption kinetics for micro- and nano-powders.

Graphical abstract: Modelling and evaluation of hydrogen desorption kinetics controlled by surface reaction and bulk diffusion for magnesium hydride

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Publication details

The article was received on 04 Aug 2014, accepted on 26 Nov 2014 and first published on 18 Dec 2014


Article type: Paper
DOI: 10.1039/C4RA08089K
Author version available: Download Author version (PDF)
Citation: RSC Adv., 2015,5, 5363-5371
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    Modelling and evaluation of hydrogen desorption kinetics controlled by surface reaction and bulk diffusion for magnesium hydride

    I. V. Drozdov, R. Vaßen and D. Stöver, RSC Adv., 2015, 5, 5363
    DOI: 10.1039/C4RA08089K

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