Experimental investigation on the corrosion inhibition of carbon steel by 5-(chloromethyl)-8-quinolinol hydrochloride in hydrochloric acid solution

被引：104

作者：

El Faydy, M. ^{[1
]}

Galai, M. ^{[2
]}

El Assyry, A. ^{[3
]}

Tazouti, A. ^{[2
]}

Touir, R. ^{[2
,4
]}

Lakhrissi, B. ^{[1
]}

Touhami, M. Ebn ^{[2
]}

Zarrouk, A. ^{[5
]}

机构：

[1] Univ Ibn Tofail, Dept Chim, Fac Sci, Lab Agroressources & Genie Proc, BP 133, Kenitra, Morocco

[2] Univ Ibn Tofail, Lab Ingn Mat & Environm Modelisat & Applicat, Fac Sci, BP 133, Kenitra 14000, Morocco

[3] Univ Ibn Tofail, Dept Phys, Fac Sci, Lab Optoelect & Physicochim Mat, BP 133, Kenitra, Morocco

[4] CRMEF, Ave Allal Al Fassi,Madinat Al Irfane BP, Rabat 6210, Morocco

[5] First Mohammed Univ, Fac Sci, LCAE URAC 18, POB 717, Oujda 60000, Morocco

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2016年 / 219卷

关键词：

XC38; Steel; Quinolinol dervivative; Corrosion inhibition; Weight loss; Electrochemical techniques; DFT; MOLECULAR-ORBITAL THEORY; EXTENDED BASIS-SETS; 1 M HCL; MILD-STEEL; ORGANOMETALLIC COMPOUNDS; DERIVATIVES; ADSORPTION; BEHAVIOR; ELEMENTS; SURFACE;

D O I：

10.1016/j.molliq.2016.03.056

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

5-(chloromethyl)-8-quinolinol hydrochloride (CI-QH) was synthesized and characterized. Thus, its inhibition effect on XC38 steel corrosion in 1 M HCl medium was investigated using weight loss and electrochemical measurements. Polarization measurements indicated that, the studied compound acts as a mixed type inhibitor, the inhibition efficiency depends on its concentration and reaches 97% at 10(-3) M. Electrochemical impedance spectroscopy showed that the CI-QH acts by the formation of a protective film at the metallic surface. The adsorption of the studied compound followed the Langmuir isotherm. So, scanning electronic microscopy (SEM) confirms the performance of CI-QH against corrosion. In addition, quantum chemical calculations using OFT at the B3LYP/6-31G* level of theory was further used to calculate and discussed some electronic properties of the studied molecule. The theoretical and experimental results are in good agreement. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：396 / 404

页数：9

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