COMPARATIVE STUDIES OF SOME HETEROCYCLIC COMPOUNDS AS CORROSION INHIBITORS OF COPPER IN PHOSPHORIC ACID MEDIA

Autor:	Mohammad-Reza Arshadi, Masoume Biglar, Mohsen Lashgari
Rok vydání:	2010
Předmět:	Benzotriazole General Chemical Engineering Inorganic chemistry Triazole chemistry.chemical_element General Chemistry Copper Corrosion Metal chemistry.chemical_compound chemistry visual_art Thiophene visual_art.visual_art_medium Molecule Phosphoric acid
Zdroj:	Chemical Engineering Communications. 197:1303-1314
ISSN:	1563-5201 0098-6445
Popis:	Corrosion inhibition properties of some heterocyclic compounds (3-mercapto 1,2,4 triazole, benzotriazole, thiophene, and tetra hydro-thiophene) in Cu/H3PO4 medium were investigated theoretically and experimentally via cluster/polarized continuum and gravimetric approaches. Second-order Moller-Plesset perturbation and density functional theories were applied, and the electronic chemical potential, molecular softness, and extent of charge transfer were determined for inhibitor molecules at the metal/solution interface. Good correlations were observed for both theories between the calculated quantities and experimental data. To reveal the quality of metal-inhibitor interactions, comprehensive analyses were carried out on various active centers of the compounds. It was concluded that the interactions are mostly physical, and the molecules with less electron-inducing effect act more efficiently.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::181c51ca641dce0438012d855e5b701e https://doi.org/10.1080/00986441003622887 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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