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Effects of mechanical processing on the kinetics of H2 absorption in Mg2Ni alloys

Mulas, Gabriele Raimondo Celestino and Delogu, Francesco and Cocco, Giorgio (2009) Effects of mechanical processing on the kinetics of H2 absorption in Mg2Ni alloys. Journal of Alloys and Compounds, Vol. 473 (1-2), p. 180-184. ISSN 0925-8388. Article.

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DOI: 10.1016/j.jallcom.2008.06.026

Abstract

This work is aimed at quantifying mechanochemical effects in reactive solid–gas systems. It deals in particular with the kinetics of H2 absorption processes on a Mg2Ni composite under thermal and mechanical activation. In a first series of experiments, powders were exposed to H2 under static conditions for selected time intervals and successively subjected to mechanical treatment. In a second series, the latter was instead started in coincidence with the exposure of powders to H2. The effects of mechanical processing on the H2 absorption processes have been quantified via the accurate description of the absorption kinetics with suitable model curves. A tentative rationalization of experimental observations is proposed.

Item Type:Article
ID Code:1856
Status:Published
Refereed:Yes
Uncontrolled Keywords:Hydrogen storage materials, mechanochemical synthesis, kinetics
Subjects:Area 03 - Scienze chimiche > CHIM/02 Chimica fisica
Divisions:001 Università di Sassari > 01 Dipartimenti > Chimica
Publisher:Elsevier
ISSN:0925-8388
Copyright Holders:© 2008 Elsevier B.V.
Deposited On:18 Aug 2009 10:06

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