Corrosion mitigation potential of N-(2-(2-pentadecyl-2,5-dihydro-1H-imidazol-1-yl)ethyl)palmitamide palmitate on Q235 steel in sulfuric acid: experimental and theoretical analysis
Kashif Rahmani Ansari, Ambrish Singh, Ismat H. Ali, Yuanhua Lin, Aeshah H. Alamri, Hala M. Abo-Dief
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引用次数: 0
Abstract
This work investigates the use of N-(2-(2-pentadecyl-2,5-dihydro-1H-imidazol-1-yl)ethyl)palmitamide palmitate (PIP) in 1 M H2SO4 solution as an anti-corrosive agent for Q235 steel. By using a range of methods including electrochemical tests, weight loss, scanning electron microscopy, atomic force microscopy, contact angler, and X-ray photoelectron spectroscopy were used for the analysis of PIP inhibition potential. The extract molecules formed an adherent and homogenous protective film on the MS surface. When the PIP concentration increased, a stronger inhibition effect against corrosive attack was obtained. The highest obtained inhibition efficiency is 97.65% at 100 mg/L PIP alone and 98.04% at 25 mg/L (PIP) + 0.5 mM potassium iodide. Polarization measurements showed the mixed type inhibitive nature of the PIP with cathodic dominancy. The various kinetic and thermodynamic parameters of metal dissolution and PIP adsorption processes were evaluated from the weight loss methods in order to elaborate the adsorption mechanism. Adsorption of inhibitor obeyed Langmuir adsorption isotherm. Furthermore, an active relationship involving PIP and the Q235 steel surface was highlighted by computational studies, such as density functional theory and molecular dynamics simulation that are demonstrating outstanding mitigation properties.
Chemical PapersChemical Engineering-General Chemical Engineering
CiteScore
3.30
自引率
4.50%
发文量
590
期刊介绍:
Chemical Papers is a peer-reviewed, international journal devoted to basic and applied chemical research. It has a broad scope covering the chemical sciences, but favors interdisciplinary research and studies that bring chemistry together with other disciplines.