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Benzenamine derivative as corrosion inhibitor of carbon steel in hydrochloric acid solution: Electrochemical and theoretical studies
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نویسنده
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hayaoui m. ,drissi m. ,fahim m. ,salim r. ,rais z. ,mouffarih s. ,filali baba m. ,el hajjaji f. ,zarrouk a. ,taleb m.
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منبع
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journal of materials and environmental science - 2017 - دوره : 8 - شماره : 5 - صفحه:1877 -1887
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چکیده
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N-(1-(propionyloxy) propylidene) benzenamine (ppb) was tested as corrosion inhibitor for carbon steel in 1m hcl by using polarization and electrochemical impedance spectroscopy (eis) at 298-328 k. then the experimental results were confirmed by theoretical calculations using dft at b3lyp/6-31g (d,p) level of theory. the inhibition efficiency was found to increase with increase in ppb concentration but decreased with temperature. activation parameters and gibbs free energy for the adsorption process were calculated and discussed. it was found that ppb behaved as a mixed type inhibitor. the adsorption process of inhibitor obeyed the langmuir isotherm. impedance measurements showed that the double-layer capacitance decreased and charge-transfer resistance increased with increase in the inhibitor concentration and hence increasing in inhibition efficiency. © © 2017,university of mohammed premier,oujda morocco.
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کلیدواژه
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Carbon steel; Corrosion inhibition; DFT; Electrochemical techniques; HCl
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آدرس
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laboratory of engineering,electrochemistry,modeling and environment (lieme),faculty of sciences,university sidi mohamed ben abdellah,fez,morocco,laboratory of separation processes,faculty of science,university ibn tofail,kenitra, Morocco, laboratory of materials chemistry and bio-technology of naturals products,faculty of sciences,university moulay,ismail,meknes, Morocco, laboratory of materials chemistry and bio-technology of naturals products,faculty of sciences,university moulay,ismail,meknes, Morocco, laboratory of engineering,electrochemistry,modeling and environment (lieme),faculty of sciences,university sidi mohamed ben abdellah,fez,morocco,laboratory of separation processes,faculty of science,university ibn tofail,kenitra, Morocco, laboratory of engineering,electrochemistry,modeling and environment (lieme),faculty of sciences,university sidi mohamed ben abdellah,fez, Morocco, laboratory of engineering,electrochemistry,modeling and environment (lieme),faculty of sciences,university sidi mohamed ben abdellah,fez, Morocco, laboratory of engineering,electrochemistry,modeling and environment (lieme),faculty of sciences,university sidi mohamed ben abdellah,fez, Morocco, laboratory of engineering,electrochemistry,modeling and environment (lieme),faculty of sciences,university sidi mohamed ben abdellah,fez, Morocco, lc2ame-urac 18,faculty of science,first mohammed university,po box 717,oujda, Morocco, laboratory of engineering,electrochemistry,modeling and environment (lieme),faculty of sciences,university sidi mohamed ben abdellah,fez, Morocco
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Authors
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