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<identifier>oai:HAL:hal-01096655v1</identifier>
<datestamp>2018-01-11</datestamp>
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<title lang=en>Alkaloids extract from Palicourea guianensis plant as corrosion inhibitor for C38 steel in 1 M hydrochloric acid medium</title>
<creator>Lebrini, M.</creator>
<creator>Robert, Florent</creator>
<creator>Roos, C.</creator>
<contributor>Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Centre National de la Recherche Scientifique (CNRS)</contributor>
<description>International audience</description>
<source>International journal of electrochemical science</source>
<identifier>hal-01096655</identifier>
<identifier>https://hal-agroparistech.archives-ouvertes.fr/hal-01096655</identifier>
<source>https://hal-agroparistech.archives-ouvertes.fr/hal-01096655</source>
<source>International journal of electrochemical science, 2011, 6, pp.847-859</source>
<language>en</language>
<subject lang=en>Palicourea guianensis</subject>
<subject lang=en>Corrosion inhibitors</subject>
<subject lang=en>C38 steel</subject>
<subject lang=en>Acidic media</subject>
<subject lang=en>Adsorption</subject>
<subject>[SDV] Life Sciences [q-bio]</subject>
<subject>[CHIM] Chemical Sciences</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Corrosion inhibition effect of alkaloids extract from Palicourea guianensis plant (AEPG) on C38 steel in 1 M HCl medium has been investigated by potentiodynamic polarization and electrochemical impedance spectroscopy. The polarization studies showed that AEPG acts as mixed-type inhibitor. The electrochemical impedance spectroscopy showed that the charge transfer resistance increases and the double layer capacitance decreases on increasing plant extract concentration. The inhibition efficiency of the extract obtained from impedance and polarization measurements was in a good agreement and was found to increase with increasing concentration of the extract. Inhibition efficiency of 89% was achieved with 100 mg L-1 of AEPG at 25 °C. The obtained results showed that, the Palicourea guianensis extract could serve as an effective inhibitor for the corrosion of steel in acid media. The adsorption of AEPG obeys the Langmuir adsorption isotherm.</description>
<date>2011</date>
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