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Thermodynamic study and electrochemical Investigation of 4-chloro-1H-pyrazolo[3,4-d]pyrimidine as a corrosion Inhibitor for mild steel in hydrochloric acid Solution
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نویسنده
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chami r. ,boudalia m. ,echihi s. ,el fal m. ,bellaouchou a. ,guenbour a. ,tabyaoui m. ,essassi e.m. ,zarrouk a. ,ramli y.
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منبع
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journal of materials and environmental science - 2017 - دوره : 8 - شماره : 11 - صفحه:4182 -4192
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چکیده
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The corrosion performance of mild steel in 1 m hcl solution with different concentrations of synthesized 4-chloro-1h-pyrazolo[3,4-d]pyrimidine (chpp) was investigated by electrochemical measurements. chpp has significantly inhibited mild steel corrosion in 1 m hcl solution and the inhibition efficiency increased with chpp concentration. the inhibitor showed more than 87% inhibition efficiency at optimum concentration of 10-3 mol l-1. potentiodynamic polarization results showed that chpp was a mixed-type inhibitor with predominately anodic effect. the adsorption of chpp on mild steel surface was strong and followed langmuir adsorption isotherm. the relationship between molecular structure of this compound and their inhibition efficiency has been investigated by quantum chemical calculations. the electronic properties such as the highest occupied molecular orbital (homo),the lowest unoccupied molecular orbital (lumo) energy levels,energy gap (lumo/homo),dipole moment and molecular orbital densities were computed. © 2017,university of mohammed premier oujda morocco.
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کلیدواژه
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Corrosion inhibition; EIS; Polarization curves; Pyrimidine derivatives; Steel
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آدرس
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laboratoire de physico-chimie des matériaux inorganiques et organiques,ecole normale supérieure,université mohammed v,rabat, Morocco, laboratory of materials,nanotechnology and environment,faculty of sciences,university of mohammed v,av. ibn battouta,bp 1014,rabat, Morocco, laboratory of materials,nanotechnology and environment,faculty of sciences,university of mohammed v,av. ibn battouta,bp 1014,rabat,morocco,laboratory of water and environment,faculty of sciences,el jadida,bp 20,el jadida, Morocco, laboratoire de chimie organique hétérocyclique urac 21,pôle de compétence pharmacochimie,faculté des sciences,université mohammed v,av. ibn battouta,bp 1014,rabat,morocco,medicinal chemistry laboratory,faculty of medicine and pharmacy,mohammed v university,rabat, Morocco, laboratory of materials,nanotechnology and environment,faculty of sciences,university of mohammed v,av. ibn battouta,bp 1014,rabat, Morocco, laboratory of materials,nanotechnology and environment,faculty of sciences,university of mohammed v,av. ibn battouta,bp 1014,rabat, Morocco, laboratory of materials,nanotechnology and environment,faculty of sciences,university of mohammed v,av. ibn battouta,bp 1014,rabat, Morocco, laboratoire de chimie organique hétérocyclique urac 21,pôle de compétence pharmacochimie,faculté des sciences,université mohammed v,av. ibn battouta,bp 1014,rabat, Morocco, lc2ame-urac 18,faculty of science,first mohammed university,po box 717,oujda, Morocco, medicinal chemistry laboratory,faculty of medicine and pharmacy,mohammed v university,rabat, Morocco
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Authors
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