2026-04-20T05:28:40Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/47652024-07-24T11:21:03Zcom_10259_9476com_10259.4_106com_10259_2604col_10259_9477

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 . 2b5f1855-5ceb-482b-9291-4120c01bd6f7 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 license_rdf license_rdf application/rdf+xml; charset=utf-8 908 https://riubu.ubu.es/bitstream/10259/4765/8/license_rdf 0175ea4a2d4caec4bbcc37e300941108 MD5 8 THUMBNAIL Garroni-JMS_2017.pdf.jpg Garroni-JMS_2017.pdf.jpg IM Thumbnail image/jpeg 5075 https://riubu.ubu.es/bitstream/10259/4765/7/Garroni-JMS_2017.pdf.jpg 3ae2b00cc927bf3a1518e4010a20d853 MD5 7 ORIGINAL Garroni-JMS_2017.pdf Garroni-JMS_2017.pdf application/pdf 821215 https://riubu.ubu.es/bitstream/10259/4765/1/Garroni-JMS_2017.pdf 9f2bca9f044ac86a7017b92c6aacee86 MD5 1 LICENSE license.txt license.txt text/plain; charset=utf-8 998 https://riubu.ubu.es/bitstream/10259/4765/5/license.txt aa90105e1c90a1b4fe810649aa967b7d MD5 5 TEXT Garroni-JMS_2017.pdf.txt Garroni-JMS_2017.pdf.txt Extracted text text/plain 35116 https://riubu.ubu.es/bitstream/10259/4765/6/Garroni-JMS_2017.pdf.txt c72116c311594827b0bec15a35c0cfb3 MD5 6 10259/4765 oai:riubu.ubu.es:10259/4765 2024-07-24 13:21:03.807 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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