Theoretical study of medium-sized azacycloalkane and dialkyl amine adsorption on the Fe(111) surface / Shinichi Satoh in Industrial & engineering chemistry research, Vol. 50 N° 12 (Juin 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7313-7318 Titre : Theoretical study of medium-sized azacycloalkane and dialkyl amine adsorption on the Fe(111) surface Type de document : texte imprimé Auteurs : Shinichi Satoh, Auteur ; Hiroshi Fujimoto, Auteur Année de publication : 2011 Article en page(s) : pp. 7313-7318 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Adsorption Résumé : To understand the difference in inhibition efficiency against corrosion of iron surfaces between medium-sized azacycloalkanes and dialkyl amines containing the same number of carbon atoms, the adsorption of azacycloundecane and of dipentyl amine onto a model Fe(111) surface has been studied using the molecular orbital and density functional theoretical methods. B3LYP calculations show that azacycloundecane gives a stronger interaction with the surface from an energy point of view. The difference between the two amines in the strength of interaction originates predominantly from the changes in structure of the carbon chains that take place during the adsorption process. The calculations suggest that a large C-N-C bond angle does not lead to efficient secondary-amine inhibitors that prevent the corrosion of iron surfaces. This conclusion is supported by a paired interaction orbital analysis. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24239045 [article] Theoretical study of medium-sized azacycloalkane and dialkyl amine adsorption on the Fe(111) surface [texte imprimé] / Shinichi Satoh, Auteur ; Hiroshi Fujimoto, Auteur . - 2011 . - pp. 7313-7318. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7313-7318 Mots-clés : Adsorption Résumé : To understand the difference in inhibition efficiency against corrosion of iron surfaces between medium-sized azacycloalkanes and dialkyl amines containing the same number of carbon atoms, the adsorption of azacycloundecane and of dipentyl amine onto a model Fe(111) surface has been studied using the molecular orbital and density functional theoretical methods. B3LYP calculations show that azacycloundecane gives a stronger interaction with the surface from an energy point of view. The difference between the two amines in the strength of interaction originates predominantly from the changes in structure of the carbon chains that take place during the adsorption process. The calculations suggest that a large C-N-C bond angle does not lead to efficient secondary-amine inhibitors that prevent the corrosion of iron surfaces. This conclusion is supported by a paired interaction orbital analysis. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24239045

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