Adsorption and Quantum Chemical Studies on the Inhibition Potential of Mannich Base for the Corrosion of Brass in Acid Medium

被引：9
|
作者：
Zulfareen, N. [1 ]
Kannan, K. [1 ]
Venugopal, T. [1 ]
Gnanavel, S. [1 ]
机构：
[1] Govt Coll Engn, Dept Chem, Salem 636011, India
来源：
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING | 2017年 / 42卷 / 01期
关键词：
Mannich base; Brass; Acid corrosion; EIS; CV; DFT; DENSITY-FUNCTIONAL THEORY; MILD-STEEL CORROSION; SPECTROSCOPIC FT-IR; BENZOTRIAZOLE DERIVATIVES; COPPER CORROSION; HOMO-LUMO; RAMAN; NBO; UV;
D O I：
10.1007/s13369-016-2088-4
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
N-(morpholinomethyl) nicotinamide (MMN) a Mannich base was synthesized and characterized by FTIR, NMR, and NMR. The high corrosion inhibition efficiency of N-(morpholinomethyl) nicotinamide (MMN) on brass in 1 M HCl solution was reported using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy, and cyclic voltammetry methods. The corrosion mechanism of MMN was explained by some parameters like free energy, entropy, and enthalpy. The maximum inhibition efficiency of MMN was found to be 93.16 % at . Polarization measurement reveals that MMN acts as a mixed-type inhibitor. Thermodynamic parameter implies that MMN obeys Langmuir adsorption isotherm. The high corrosion inhibition efficiency was proved by quantum chemical indices using density functional theory and surface morphology using SEM.
引用
收藏
页码：125 / 138
页数：14
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