International Journal of Corrosion

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A Study of N,N-Diethylammonium O,O'-Di(p-methoxyphenyl)dithiophosphate as New Corrosion Inhibitor for Carbon Steel in Hydrochloric Acid Solution


Affiliations
1 School of Chemistry and Chemical Engineering, Sichuan University of Arts and Science, Dazhou 635000, China
2 Institute of Functional Materials, Sichuan University of Science and Engineering, Zigong 643000, China
 

N,N-Diethylammonium O,O'-di(p-methoxyphenyl)dithiophosphate (EAPP) as a new corrosion inhibitor was synthesized in the presentwork. Thecorrosion inhibition of EAPP in hydrochloric acid for carbon steelwas evaluated by potentiodynamic polarization measurements, electrochemical impedance spectroscopy, weight lossmeasurements, and scanning electron microscopy. Theresults indicate that the EAPP is mixed type inhibitor, and the adsorption of EAPP on carbon steel surface obeys Langmuir isotherm. In addition, the inhibition efficiency increases with increasing the concentration of inhibitor and decreases with increasing the hydrochloric acid concentration, temperature, and storage time.
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  • A Study of N,N-Diethylammonium O,O'-Di(p-methoxyphenyl)dithiophosphate as New Corrosion Inhibitor for Carbon Steel in Hydrochloric Acid Solution

Abstract Views: 540  |  PDF Views: 0

Authors

Chuan Lai
School of Chemistry and Chemical Engineering, Sichuan University of Arts and Science, Dazhou 635000, China
Bin Xie
Institute of Functional Materials, Sichuan University of Science and Engineering, Zigong 643000, China
Changlu Liu
School of Chemistry and Chemical Engineering, Sichuan University of Arts and Science, Dazhou 635000, China
Wan Gou
School of Chemistry and Chemical Engineering, Sichuan University of Arts and Science, Dazhou 635000, China
Lvshan Zhou
School of Chemistry and Chemical Engineering, Sichuan University of Arts and Science, Dazhou 635000, China
Xiulan Su
School of Chemistry and Chemical Engineering, Sichuan University of Arts and Science, Dazhou 635000, China
Like Zou
Institute of Functional Materials, Sichuan University of Science and Engineering, Zigong 643000, China

Abstract


N,N-Diethylammonium O,O'-di(p-methoxyphenyl)dithiophosphate (EAPP) as a new corrosion inhibitor was synthesized in the presentwork. Thecorrosion inhibition of EAPP in hydrochloric acid for carbon steelwas evaluated by potentiodynamic polarization measurements, electrochemical impedance spectroscopy, weight lossmeasurements, and scanning electron microscopy. Theresults indicate that the EAPP is mixed type inhibitor, and the adsorption of EAPP on carbon steel surface obeys Langmuir isotherm. In addition, the inhibition efficiency increases with increasing the concentration of inhibitor and decreases with increasing the hydrochloric acid concentration, temperature, and storage time.