2024-03-28T09:20:47Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/47652023-03-31T12:37:59Zcom_10259_4759com_10259_2604col_10259_4760
Garroni, Sebastiano
227
500
0000-0001-7686-6589
Delogu, Francesco
fc63ecfd-200d-46f6-af00-6ed6de879c01
500
Minella, Christian Bonatto .
d3945491-2140-42be-a5d1-6aebff06de9c
500
Pistidda, Claudio .
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500
Cuesta López, Santiago
133
500
0000-0002-7401-3889
2018-03-21T12:12:52Z
2018-03-21T12:12:52Z
2017-10
0022-2461
http://hdl.handle.net/10259/4765
10.1007/s10853-017-1220-5
The present work addresses the kinetics of chemical transformations activated by the mechanical processing of powder by ball milling. In particular, attention focuses on the reaction between NaNH2 and MgH2, specific case studies suitably chosen to throw light on the kinetic features emerging in connection with the exchange of anionic ligands induced by mechanical activation. Experimental findings indicate that the mechanical treatment of NaNH2–MgH2 powder mixtures induces a simple metathetic reaction with formation of NaH and Mg(NH2)2 phases. Chemical conversion data obtained by X-ray diffraction analysis have been interpreted using a kinetic model incorporating the statistical character of the mechanical processing by ball milling. The apparent rate constant measuring the reaction rate is related to the volume of powder effectively processed during individual collisions, and tentatively connected with the transfer of mechanical energy across the network formed by the points of contact between the powder particles trapped during collisions.
H2020-MSCA-IF-2015 Grant Number #707954
application/pdf
eng
Springer
Journal of Materials Science. 2017, V. 52, n. 20, p. 11891–11899
https://doi.org/10.1007/s10853-017-1220-5
info:eu-repo/grantAgreement/EC/H2020/#707954
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
Mechanically activated metathesis reaction in NaNH2–MgH2 powder mixtures
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
CC-LICENSE
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oai:riubu.ubu.es:10259/4765
2023-03-31 14:37:59.325
Repositorio Institucional de la Universidad de Burgos
bubrep@ubu.es
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