Kinetics of copper and cadmium cementation by zinc powder.

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorOliveira, Víctor de Andrade Alvarenga-
Autor(es): dc.creatorPenna, José Márcio Soares-
Autor(es): dc.creatorMagalhães, Lucas Sanches-
Autor(es): dc.creatorLeão, Versiane Albis-
Autor(es): dc.creatorSantos, Claudio Gouvea dos-
Data de aceite: dc.date.accessioned2025-08-21T15:24:06Z-
Data de disponibilização: dc.date.available2025-08-21T15:24:06Z-
Data de envio: dc.date.issued2020-09-08-
Data de envio: dc.date.issued2020-09-08-
Data de envio: dc.date.issued2019-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/12709-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.4322/2176-1523.20191661-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1013365-
Descrição: dc.descriptionThe cementation of copper and cadmium by zinc powder was investigated in order to assess the influence of different parameters in the process. The results showed that the process follows a first order reaction with two stages in both systems. In the system Cu/Zn, the second stage is faster than the first while in the system Cd/Zn the second stage is slower than the first. In the system Cu/Zn, the variation on the surface area of copper cement followed a power law and a straight line was obtained by plotting –ln([Cu2+]/[Cu2+] 0 ) against t3/2, the activation energy was calculated as 16.3kJ. In the system Zn/Cd the surface area available for reaction decreased as a result of the cement agglomeration. On the experiments carried out with ions Cu2+ and Cd2+ in solution, purer copper cement was obtained when the experiments were carried out in the presence of less than stoichiometric amount of zinc powder and longer reaction times.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsaberto-
Direitos: dc.rightsThis is an open access paper, published under the Creative Commons CC BY-NC-ND license (Attribution-NonCommercial-NoDerivs) - https://creativecommons.org/licenses/ by-nc-nd/4.0/. Fonte: o próprio artigo.-
Título: dc.titleKinetics of copper and cadmium cementation by zinc powder.-
Aparece nas coleções:Repositório Institucional - UFOP

Não existem arquivos associados a este item.