Using the electrochemical impedance spectroscopy to characterize carbon steel in biodiesel medium

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dc.contributor.authorAkita, A. H. [UNESP]
dc.contributor.authorFugivara, Cecilio Sadao [UNESP]
dc.contributor.authorAoki, I. V.
dc.contributor.authorBenedetti, Assis Vicente [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-27T11:27:19Z
dc.date.available2014-05-27T11:27:19Z
dc.date.issued2012-12-01
dc.description.abstractElectrochemical impedance spectroscopy measurements using two carbon steel electrodes in soybean biodiesel medium, produced by methylic route, were performed in an electrochemical cell that allows positioning the two electrodes face-to-face. To retain the biodiesel between the electrodes and prevent its leakage a porous membrane soaked in biodiesel was used. The amplitude of the AC potential and the area of the electrodes were varied. The linearity between disturbance and response signals was observed for tests when the amplitude of the AC potential was lower than 1500 mV (rms). The electrical resistance of biodiesel dominates the global response and carbon steel presents low corrosion, which is observed only at low frequency, and was confirmed by chemical tests performed in the membrane. In conclusion the electrical resistance of biodiesel can be estimated using electrochemical impedance spectroscopy with two electrodes set up. ©The Electrochemical Society.en
dc.description.affiliationDepartamento de Físico-Química Instituto de Química UNESP - Univ. Estadual Paulista, Caixa Postal 355, 14800-060, Araraquara, SP
dc.description.affiliationDepartamento de Engenharia Química Escola Politécnica USP - Univ. de São Paulo, Caixa Postal 61548, 05424-970, São Paulo, SP
dc.description.affiliationUnespDepartamento de Físico-Química Instituto de Química UNESP - Univ. Estadual Paulista, Caixa Postal 355, 14800-060, Araraquara, SP
dc.format.extent71-77
dc.identifierhttp://dx.doi.org/10.1149/1.4704942
dc.identifier.citationECS Transactions, v. 43, n. 1, p. 71-77, 2012.
dc.identifier.doi10.1149/1.4704942
dc.identifier.issn1938-5862
dc.identifier.issn1938-6737
dc.identifier.lattes2797127887030838
dc.identifier.scopus2-s2.0-84879449648
dc.identifier.urihttp://hdl.handle.net/11449/73845
dc.language.isoeng
dc.relation.ispartofECS Transactions
dc.relation.ispartofsjr0,225
dc.relation.ispartofsjr0,225
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectCarbon steel electrodes
dc.subjectChemical tests
dc.subjectElectrical resistances
dc.subjectElectrochemical impedance spectroscopy measurements
dc.subjectGlobal response
dc.subjectPorous membranes
dc.subjectResponse signal
dc.subjectSoybean biodiesels
dc.subjectCarbon steel
dc.subjectCorrosion
dc.subjectElectric resistance
dc.subjectElectrochemical impedance spectroscopy
dc.subjectElectrodes
dc.subjectSpectroscopy
dc.subjectBiodiesel
dc.titleUsing the electrochemical impedance spectroscopy to characterize carbon steel in biodiesel mediumen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://www.electrochem.org/dl/support/assets/crtf.pdf
unesp.author.lattes2797127887030838[2]
unesp.author.lattes1769008264876945[4]
unesp.author.orcid0000-0002-0243-6639[4]
unesp.author.orcid0000-0002-2288-2601[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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