Mercaptopyrimidines as inhibitors of carbon dioxide corrosion of iron

Autor:	V. D. Akamsin, Yu. P. Khodyrev, L. Tiwari, R. M. Galiakberov, V. S. Reznik, Yu. Ya. Efremov
Rok vydání:	2008
Předmět:	Reaction mechanism Materials science Hydrochloride General Chemical Engineering Inorganic chemistry General Chemistry Electrochemistry Cathode Corrosion Anode law.invention Metal chemistry.chemical_compound Adsorption chemistry law visual_art visual_art.visual_art_medium General Materials Science
Zdroj:	Corrosion Science. 50:392-403
ISSN:	0010-938X
DOI:	10.1016/j.corsci.2007.06.021
Popis:	The inhibition activity of 2-mercaptopyrimidine ( I ), 2-mercapto-4-methylpyrimidine hydrochloride ( II ), 2-mercapto-4,6-dimethylpyrimidine ( III ) and its hydrochloride ( IV ) upon carbon dioxide corrosion of iron has been studied in a wide range of concentrations at 40–90 °C using electrochemical and mass-spectrometry methods. High activity has been found for all compounds ( P = 80–99%) at very low concentrations (0.02–5 mg/l). Adsorption of inhibitor by metal not only blocks its surface but changes the reaction mechanism as well. Charge transfer is the limiting stage of both cathode and anode reactions. The title compounds can be considered as inhibitors of what is a mixed type with prevailing effect on the anode reaction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9f9b1ceb19510f590cd1242d06cce91e https://doi.org/10.1016/j.corsci.2007.06.021 Zobrazit plný text záznamu Full Text from ScienceDirect