Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Santiago Alberto Pighin"'
Autor:
F.J. Castro, H. E. Troiani, Xavier A. Ojeda, Santiago Alberto Pighin, Guillermina Urretavizcaya, M. Sergio Moreno
Publikováno v:
International Journal of Hydrogen Energy. 46:4126-4136
A study to determine the optimal content of Nb(V) ethoxide required to efficiently catalyze the H2 sorption kinetics in the Mg/MgH2 system is reported. The materials were synthesized by hand mixing different amounts of additive (from 0.10 to 1 mol%)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2af0cd0740bfbc83fbb9efd2f147e6c1
https://doi.org/10.1016/j.ijhydene.2020.10.169
https://doi.org/10.1016/j.ijhydene.2020.10.169
Autor:
Juan J. Cortez, H. E. Troiani, Santiago Alberto Pighin, F.J. Castro, Guillermina Urretavizcaya
Publikováno v:
International Journal of Hydrogen Energy. 44:11961-11969
The hydrogen absorption and desorption properties of a MgH2 – 1 mol.% Nb(V) ethoxide mixture are reported. The material was prepared by hand mixing the additive with previously ball-milled MgH2. Nb ethoxide reacts with MgH2 during heating, releasin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1108c3bcc588567ab46d0044aec4b4d
https://doi.org/10.1016/j.ijhydene.2019.03.096
https://doi.org/10.1016/j.ijhydene.2019.03.096
Autor:
Guillermina Urretavizcaya, Michel Nakhl, S. Al Bacha, Jean Louis Bobet, M. Zakhour, F.J. Castro, Santiago Alberto Pighin
Publikováno v:
International Journal of Hydrogen Energy
International Journal of Hydrogen Energy, Elsevier, 2020, 45, pp.20883-20893. ⟨10.1016/j.ijhydene.2020.05.214⟩
International Journal of Hydrogen Energy, Elsevier, 2020, 45, pp.20883-20893. ⟨10.1016/j.ijhydene.2020.05.214⟩
Ball milling strategy is of prime importance on the hydrolysis performance of Mg alloy waste. The effect of milling device (e.g. Fritsch Pulverisette 6 (P6) and Australian Uni-Ball-II (UB)), milling atmosphere (H2 and Ar), milling time, nature of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c3646e51f466dcf4057da46a728d5db
https://hal.archives-ouvertes.fr/hal-03491985
https://hal.archives-ouvertes.fr/hal-03491985
Publikováno v:
Journal of Alloys and Compounds
Journal of Alloys and Compounds, Elsevier, 2020, 827, pp.154000. ⟨10.1016/j.jallcom.2020.154000⟩
Journal of Alloys and Compounds, Elsevier, 2020, 827, pp.154000. ⟨10.1016/j.jallcom.2020.154000⟩
International audience; The synthesis, characterization and hydrolysis properties of nanostructured MgH2 and Mg in a 0.6 M MgCl2 aqueous solution are reported. The microstructural properties of commercial MgH2 are modified by mechanical milling witho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68fae2fbf21ece1135f6a4907984fa04
http://hdl.handle.net/20.500.12278/15784
http://hdl.handle.net/20.500.12278/15784
Autor:
F.J. Castro, Guillermina Urretavizcaya, S. Al Bacha, Santiago Alberto Pighin, J.-L. Bobet, M. Zakhour, Michel Nakhl
Publikováno v:
Journal of Power Sources
Journal of Power Sources, Elsevier, 2020, 479, 228711 (10 p.). ⟨10.1016/j.jpowsour.2020.228711⟩
Journal of Power Sources, Elsevier, 2020, 479, 228711 (10 p.). ⟨10.1016/j.jpowsour.2020.228711⟩
International audience; Hydrolysis is an effective method for generating hydrogen from Mg alloy waste provided from the sacrificial anode industry. Mg alloy was ball milled under H2 to enhance its hydrolysis reactivity. The effect of ball milling tim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4af199d525e201d1c79588c495f0f474
https://hal.archives-ouvertes.fr/hal-02946027
https://hal.archives-ouvertes.fr/hal-02946027
Publikováno v:
International Journal of Hydrogen Energy. 43:7430-7439
This paper presents a comparative study of H2 absorption and desorption in MgH2 milled with NbF5 or NbH0.9. The addition of NbF5 or NbH0.9 greatly improves hydriding and dehydriding kinetics. After 80 h of milling the mixture of MgH2 with 7 mol.% of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90c48f6f60023a8b2951396f535b5406
https://doi.org/10.1016/j.ijhydene.2018.02.151
https://doi.org/10.1016/j.ijhydene.2018.02.151
Publikováno v:
Journal of Alloys and Compounds. 708:108-114
Mg(HxF1−x)2 solid solutions have been synthesized by mechanical milling MgF2 and MgH2 under H2 atmosphere. Complete solubility has been observed at 475 °C. The solid solution presents a rutile-type structure with the anion site randomly occupied b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59eed94be950b2a7bbf09a77e3dfcf75
https://doi.org/10.1016/j.jallcom.2017.02.297
https://doi.org/10.1016/j.jallcom.2017.02.297
Publikováno v:
International Journal of Hydrogen Energy. 40:4585-4596
A mixture of MgH2 and (7 mol%) NbF5 has been mechanically milled under Ar atmosphere. The evolution of the materials has been studied by in situ pressure monitoring, XRD, DSC, TG, TPD, SEM, and isothermal hydrogen absorption and desorption in a volum
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9eab84263acb1cd0e9021356674144b0
https://doi.org/10.1016/j.ijhydene.2015.01.153
https://doi.org/10.1016/j.ijhydene.2015.01.153
Publikováno v:
Physical Review E. 86
We analyze the finite temperature phase diagram of ultrathin magnetic films by introducing a mean field theory, valid in the low anisotropy regime, i.e., close to de Spin Reorientation Transition. The theoretical results are compared with Monte Carlo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6dba69432f1b6d8b1645b20cce7a0cb0
https://doi.org/10.1103/physreve.86.051119
https://doi.org/10.1103/physreve.86.051119
We present the complete zero temperature phase diagram of a model for ultrathin films with perpendicular anisotropy. The whole parameter space of relevant coupling constants is studied in first order anisotropy approximation. Because the ground state
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01abb1a8d7e2e48a39f92b0998e456e0
http://arxiv.org/abs/1008.1353
http://arxiv.org/abs/1008.1353