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Synthesis,inhibition effects and thermodynamic studies of novel substituted quinolines on the corrosion of mild steel in 1 M HCl solution
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نویسنده
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rbaa m. ,galai m. ,el faydy m. ,el kacimi y. ,ebn touhami m. ,zarrouk a. ,lakhrissi b.
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منبع
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journal of materials and environmental science - 2017 - دوره : 8 - شماره : 10 - صفحه:3529 -3549
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چکیده
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Two newly substituted quinoline derivatives,namely 5-((2-(4-dimethylamino)-phenyl-1h-benzo[d]imidazol-1-yl)-methyl)-quinolin-8-ol (q-n(ch3)2) and 5-((2-(4-nitrophenyl)-1h-benzo[d]imidazol-1-yl)-methyl)-quinolin-8-ol (q-no2) were synthesized and characterized by 1h and 13c nmr spectroscopy. their inhibitory performance was studied against the corrosion of carbon steel in 1 m hydrochloric acid at 298 k. data obtained from eis measurements has been examined and characterized by weight loss,tafel polarization and electrochemical impedance spectroscopy (eis). the experimental results reveal that the studied compounds have good inhibiting effects on the corrosion for carbon steel in 1 m hcl medium. the protection efficiency increases with increasing inhibitor concentration but decrease with temperature. polarization studies analyzed to model the corrosion inhibition process through appropriate equivalent circuit model; a constant phase element (cpe) has been used. the both inhibitors were found to obey langmuir adsorption isotherm and kinetic-thermodynamic model of el-awady. potentiodynamic polarization studies have shown that substituted quinolines acts as a mixed type of inhibitor's. © 2017,university of mohammed premier.
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کلیدواژه
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Carbon steel; Corrosion inhibition; Electrochemical techniques; Hydrochloric acid; Quinoline derivatives; Synthesis
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آدرس
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laboratory of agro-resources,polymers and process engineering,department of chemistry,faculty of science,ibn tofail university,po box 133,kenitra, Morocco, laboratory of materials engineering and environment: application and modeling,faculty of science,ibn tofail university,po box 133,kenitra, Morocco, laboratory of agro-resources,polymers and process engineering,department of chemistry,faculty of science,ibn tofail university,po box 133,kenitra, Morocco, laboratory of materials engineering and environment: application and modeling,faculty of science,ibn tofail university,po box 133,kenitra, Morocco, laboratory of materials engineering and environment: application and modeling,faculty of science,ibn tofail university,po box 133,kenitra, Morocco, lc2ame,faculty of science,first mohammed university,po box 717, Morocco, laboratory of agro-resources,polymers and process engineering,department of chemistry,faculty of science,ibn tofail university,po box 133,kenitra, Morocco
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Authors
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