Corrosion inhibition and adsorption behaviour of some bis-pyrimidine derivatives on mild steel in acidic medium

被引:118
作者
Anusuya, Nagarajan [1 ]
Saranya, Jagadeesan [2 ]
Sounthari, Palanisamy [3 ]
Zarrouk, Abdelkader [4 ]
Chitra, Subramanian [3 ]
机构
[1] RVS Tech Campus, Dept Chem, Coimbatore, Tamil Nadu, India
[2] CMR Inst Technol, Dept H&S Chem, Hyderabad, Andhra Pradesh, India
[3] PSGR Krishnammal Coll Women, Dept Chem, Coimbatore, Tamil Nadu, India
[4] First Mohammed Univ, Fac Sci, LC2AME URAC 18, POB 717, Oujda 60000, Morocco
关键词
Mild steel; Adsorption isotherm; Corrosion; Langmuir; Density functional theory; Protonation; 1 M HCL; SULFURIC-ACID; HYDROCHLORIC-ACID; CARBON-STEEL; SCHIFF-BASE; ABSOLUTE ELECTRONEGATIVITY; PYRIDAZINE DERIVATIVES; AQUEOUS EXTRACT; WEIGHT-LOSS; POLARIZATION;
D O I
10.1016/j.molliq.2016.11.015
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
The inhibition ability of mild steel in 1 M H2SO4 by bis-pyrimidine derivatives was investigated using chemical and electrochemical techniques. Results obtained indicate that bis-derivatives inhibited the corrosion of mild steel in the acid medium. The inhibition efficiency increases with increase in concentration of bis-derivatives but decrease with rise in temperature. Adsorption of bis-derivatives on the steel surface in 1 M H2SO4 follows the Langmuir adsorption model. Kinetic and thermodynamic parameters such as activation energy, enthalpy, entropy and free energy of activation and adsorption were calculated. Gibbs free energy indicated that the adsorption process is spontaneous. Scanning electron microscopy and atomic force microscopy were used to study morphology of the steel surface. Results obtained from quantum chemical studies show excellent correlations between quantum chemical parameters and experimental inhibition efficiencies using density functional theory (DFT). (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:406 / 417
页数:12
相关论文
共 54 条
[1]  
Abbas A.F., 2012, J MAT ENV SCI, V3, P1071
[2]  
Adardour K, 2010, J Mater Environ Sci, V1, P129
[3]   Thermodynamic, electrochemical and quantum chemical investigation of some Schiff bases as corrosion inhibitors for mild steel in hydrochloric acid solutions [J].
Ahamad, Ishtiaque ;
Prasad, Rajendra ;
Quraishi, M. A. .
CORROSION SCIENCE, 2010, 52 (03) :933-942
[4]   Inhibition of Mild Steel Corrosion in Sulfuric Acid Solution by New Schiff Base [J].
Al-Amiery, Ahmed A. ;
Kadhum, Abdul Amir H. ;
Kadihum, Abdulhadi ;
Mohamad, Abu Bakar ;
How, Chong K. ;
Junaedi, Sutiana .
MATERIALS, 2014, 7 (02) :787-804
[5]   New Mechanism Synthesis of 1,4-Benzothiazine and its Inhibition Performance on Mild Steel in Hydrochloric Acid [J].
Aloui, S. ;
Forsal, I. ;
Sfaira, M. ;
Ebn Touhami, M. ;
Taleb, M. ;
Filali Baba, M. ;
Daoudi, M. .
PORTUGALIAE ELECTROCHIMICA ACTA, 2009, 27 (05) :599-613
[7]   Monitoring corrosion and corrosion control of iron in HCl by non-ionic surfactants of the TRITON-X series - Part I. Tafel polarisation, ICP-AES and EFM studies [J].
Amin, Mohammed A. ;
Khaled, K. F. .
CORROSION SCIENCE, 2010, 52 (05) :1762-1770
[8]  
[Anonymous], 2007, CORROSION ENG HDB
[9]  
[Anonymous], 2010, FUNDAMENTALS CORROSI
[10]  
Ansari KR, 2013, INT J ELECTROCHEM SC, V8, P12860