2-Amino-1-(4-aminophenyl)-1H-pyrrolo(2,3-b)quinoxaline-3-carbonitrile as an efficient inhibitor for the corrosion of C38 steel in hydrochloric acid solution

被引：1

作者：

Lebrini, M. ^{[1
]}

Benkayba, W. ^{[2
]}

Jama, C. ^{[3
]}

Bentiss, F. ^{[4
]}

Roos, C. ^{[1
]}

机构：

[1] Dept Sci Interfacultaire, Lab Mat & Mol Milieux Agressif, EA 7526, Campus Univ Schoelcher BP 7209, F-97275 Schoelcher, Martinique, France

[2] Univ Mohammed V Rabat, Fac Sci Agdal, LECA, Rabat, Morocco

[3] Univ Lille, CNRS, INRA, ENSCL,UMR 8207,UMET, F-59000 Lille, France

[4] Chouaib Doukkali Univ, Fac Sci, Lab Catalysis & Corros Mat, POB 20, M-24000 El Jadida, Morocco

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2020年 / 15卷 / 03期

关键词：

AHPQC molecule; Molar hydrochloric acid; Inhibition; XPS; Electrochemical techniques; MILD-STEEL; CARBON-STEEL; DERIVATIVES; DISSOLUTION; COPPER; XPS;

D O I：

10.20964/2020.03.46

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The inhibiting properties of 2-Amino-1-(4-aminophenyl)-1H-pyrrolo(2,3-b)quinoxaline-3-carbonitrile (AHPQC) were examined of C38 steel corrosion in molar hydrochloric acid using electrochemical techniques. Impedance data displayed the AHPQC inhibits C38 steel corrosion becoming the adsorbate at metal/electrolyte interfaces. Polarization study indicated that AHPQC is an anodic-cathodic inhibitor. The inhibition efficiencies of AHPQC calculated by both methods reaches 91%. The Langmuir adsorption isotherm was observed for the AHPQC adsorption and its adsorption is realized by physical adsorption; due to the protonated forms of the AHPQC molecule in acid medium. XPS technique was used to discuss the mechanism for the adsorption process of the AHPQC molecule.

引用

页码：2326 / 2334

页数：9

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