Potential anticorrosive effect of hexamethylenediamine Penta(methylphosphonic) acid on c-steel in hydrochloric acid Solution: An experimental study with DFTB and molecular dynamics simulations

被引:5
|
作者
Bouammali, H. [1 ]
Loukili, E. H. [2 ]
Elmsellem, H. [1 ,3 ,4 ]
Jerdioui, S. [1 ]
Bekkouch, K. [1 ]
Aouniti, A. [1 ]
Salghi, R. [3 ,4 ,5 ]
Jama, C. [6 ]
Bentiss, F. [6 ,7 ]
Hammouti, B. [2 ,8 ]
机构
[1] Univ Mohamed I, Fac Sci, Dept Chem, Lab Appl Chem & Environm LCAE, Oujda, Morocco
[2] Euromediterranean Univ Fes, POB 15, Fes 30070, Morocco
[3] Higher Inst Nursing Profess & Hlth Tech ISPITSO, Oujda 63303, Morocco
[4] Sci Fac, Lab Appl Chem & Environm LCAE, Oujda, Morocco
[5] Univ Ibn Zohr, Lab Appl Chem & Environm, ENSA, Agadir 80000, Morocco
[6] Univ Lille, UMET Unite Mat & Transformat, CNRS, INRAE,UMR 8207,Cent Lille, F-59000 Lille, France
[7] Univ Chouaib Doukkali, Fac Sci, Lab Catalyse Corros Mat LCCM, BP 20, M-24000 El Jadida, Morocco
[8] Lab Ind Engn Energy & Environm LI3E SUPMTI Rabat, Rabat, Morocco
来源
MOROCCAN JOURNAL OF CHEMISTRY | 2024年 / 12卷 / 02期
关键词
Organic phosphonic acid; Carbon steel; Hydrochloric acid; Corrosion Inhibition; Adsorption; 0.5 M H2SO4; MILD-STEEL; CARBON-STEEL; CORROSION INHIBITION; PHOSPHONIC ACID; POLYPHOSPHATE; TEMPERATURE; PROTECTION; ALUMINUM; CHLORIDE;
D O I
10.48317/IMIST.PRSM/morjchem-v12i2.47169
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The inhibition ability of Hexamethylenediamine penta(methylphosphonic) acid (HTMP) against carbon steel corrosion in 1 M HCl at 30 degrees C was evaluated by weight loss, electrochemical (potentiodynamic and electrochemical impedance spectroscopy, EIS) methods. The experimental results showed that HTMP was a good inhibitor for the steel corrosion in 1 M HCl medium and its inhibition efficiency increased with the inhibitor concentration. Data, obtained from ac impedance measurements, were analyzed to model the corrosion inhibition process through appropriate equivalent circuit models. Adsorption of HTMP on the carbon steel surface followed the Langmuir adsorption isotherm. Surface analysis by (SEM) supported the formation of a protective inhibitor film on the carbon steel surface. Furthermore, the theoretical study was carried out using the density functional theory (DFT) method. DFTB calculations revealed that inhibitor molecules formed covalent bonds with iron atoms, which was confirmed by the Projected Density of States (PDOS) of adsorbed systems.
引用
收藏
页码:830 / 853
页数:24
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