Hydrogen storage properties of 2Mg-Fe mixtures processed by hot extrusion: Influence of the extrusion ratio

G. F. De Lima; S. Garroni; M. D. Baró; S. Suriñach; C. S. Kiminami; W. J. Botta; A. M. Jorge

doi:https://doi.org/10.1016/j.ijhydene.2012.07.121

Hydrogen storage properties of 2Mg-Fe mixtures processed by hot extrusion: Influence of the extrusion ratio

G. F. De Lima, S. Garroni, M. D. Baró, S. Suriñach, C. S. Kiminami, W. J. Botta, A. M. Jorge

Research output: Contribution to journal › Article › Research › peer-review

5 Citations (Scopus)

Abstract

Hot extrusion processing was employed to produce 2Mg-Fe bulk mixtures for hydrogen storage. 2Mg-Fe powder mixtures were prepared by high-energy ball milling. These mixtures were cold pressed into cylindrical pre-forms, which were then processed by hot extrusion (at 300 °C) to produce bulks. In this work, we analyzed the influence of the extrusion ratio (3/1, 5/1 and 7/1) on the sorption properties of the bulks. The nanometric grain size remained unaltered after all hot extrusion conditions. More porous bulks were produced at an extrusion ratio of 3/1. In the first cycle of hydrogenation, the sample processed at 3/1 absorbed more hydrogen (4 wt% of H) than the precursor powders (3 wt% of H). The results showed that the desorption temperature of bulks were very similar to that of 2Mg-Fe powders, which is good considering the lower surface area of bulks, and that samples with Fe in excess presented lower desorption temperatures. © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	15196-15203
Journal	International Journal of Hydrogen Energy
Volume	37
DOIs	https://doi.org/10.1016/j.ijhydene.2012.07.121
Publication status	Published - 1 Oct 2012

Keywords

Hot extrusion
Hydrogen storage
Hydrogen-absorbing materials
Mg hydrides

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@article{1dcbbfad2a0f42b5ae0fe1e0db14c20e,

title = "Hydrogen storage properties of 2Mg-Fe mixtures processed by hot extrusion: Influence of the extrusion ratio",

abstract = "Hot extrusion processing was employed to produce 2Mg-Fe bulk mixtures for hydrogen storage. 2Mg-Fe powder mixtures were prepared by high-energy ball milling. These mixtures were cold pressed into cylindrical pre-forms, which were then processed by hot extrusion (at 300 °C) to produce bulks. In this work, we analyzed the influence of the extrusion ratio (3/1, 5/1 and 7/1) on the sorption properties of the bulks. The nanometric grain size remained unaltered after all hot extrusion conditions. More porous bulks were produced at an extrusion ratio of 3/1. In the first cycle of hydrogenation, the sample processed at 3/1 absorbed more hydrogen (4 wt% of H) than the precursor powders (3 wt% of H). The results showed that the desorption temperature of bulks were very similar to that of 2Mg-Fe powders, which is good considering the lower surface area of bulks, and that samples with Fe in excess presented lower desorption temperatures. {\textcopyright} 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",

keywords = "Hot extrusion, Hydrogen storage, Hydrogen-absorbing materials, Mg hydrides",

author = "{De Lima}, {G. F.} and S. Garroni and Bar{\'o}, {M. D.} and S. Suri{\~n}ach and Kiminami, {C. S.} and Botta, {W. J.} and Jorge, {A. M.}",

year = "2012",

month = oct,

day = "1",

doi = "https://doi.org/10.1016/j.ijhydene.2012.07.121",

language = "English",

volume = "37",

pages = "15196--15203",

journal = "International Journal of Hydrogen Energy",

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publisher = "Elsevier Limited",

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Hydrogen storage properties of 2Mg-Fe mixtures processed by hot extrusion: Influence of the extrusion ratio. / De Lima, G. F.; Garroni, S.; Baró, M. D.; Suriñach, S.; Kiminami, C. S.; Botta, W. J.; Jorge, A. M.

In: International Journal of Hydrogen Energy, Vol. 37, 01.10.2012, p. 15196-15203.

Research output: Contribution to journal › Article › Research › peer-review

TY - JOUR

T1 - Hydrogen storage properties of 2Mg-Fe mixtures processed by hot extrusion: Influence of the extrusion ratio

AU - De Lima, G. F.

AU - Garroni, S.

AU - Baró, M. D.

AU - Suriñach, S.

AU - Kiminami, C. S.

AU - Botta, W. J.

AU - Jorge, A. M.

PY - 2012/10/1

Y1 - 2012/10/1

N2 - Hot extrusion processing was employed to produce 2Mg-Fe bulk mixtures for hydrogen storage. 2Mg-Fe powder mixtures were prepared by high-energy ball milling. These mixtures were cold pressed into cylindrical pre-forms, which were then processed by hot extrusion (at 300 °C) to produce bulks. In this work, we analyzed the influence of the extrusion ratio (3/1, 5/1 and 7/1) on the sorption properties of the bulks. The nanometric grain size remained unaltered after all hot extrusion conditions. More porous bulks were produced at an extrusion ratio of 3/1. In the first cycle of hydrogenation, the sample processed at 3/1 absorbed more hydrogen (4 wt% of H) than the precursor powders (3 wt% of H). The results showed that the desorption temperature of bulks were very similar to that of 2Mg-Fe powders, which is good considering the lower surface area of bulks, and that samples with Fe in excess presented lower desorption temperatures. © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

AB - Hot extrusion processing was employed to produce 2Mg-Fe bulk mixtures for hydrogen storage. 2Mg-Fe powder mixtures were prepared by high-energy ball milling. These mixtures were cold pressed into cylindrical pre-forms, which were then processed by hot extrusion (at 300 °C) to produce bulks. In this work, we analyzed the influence of the extrusion ratio (3/1, 5/1 and 7/1) on the sorption properties of the bulks. The nanometric grain size remained unaltered after all hot extrusion conditions. More porous bulks were produced at an extrusion ratio of 3/1. In the first cycle of hydrogenation, the sample processed at 3/1 absorbed more hydrogen (4 wt% of H) than the precursor powders (3 wt% of H). The results showed that the desorption temperature of bulks were very similar to that of 2Mg-Fe powders, which is good considering the lower surface area of bulks, and that samples with Fe in excess presented lower desorption temperatures. © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

KW - Hot extrusion

KW - Hydrogen storage

KW - Hydrogen-absorbing materials

KW - Mg hydrides

U2 - https://doi.org/10.1016/j.ijhydene.2012.07.121

DO - https://doi.org/10.1016/j.ijhydene.2012.07.121

M3 - Article

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EP - 15203

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

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