Pantoprazole Sodium as a Corrosion Inhibitor for Zinc in Acidic Solutions

被引：1

作者：

Saadawy, M. ^{[1
]}

机构：

[1] Alexandria Univ, Fac Sci, Chem Dept, POB 426, Alexandria 21321, Egypt

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2018年 / 13卷 / 10期

关键词：

zinc; polarization; absorbance; AC-impedance; acid corrosion; inhibition; pantoprazole; STEEL CORROSION; PERCHLORIC-ACID; MILD-STEEL; ADSORPTION; MEDIA; DISSOLUTION; IRON;

D O I：

10.20964/2018.10.02

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Pantoprazole Sodium (PAN) was tested as a corrosion inhibitor for zinc in aqueous solutions of 0.5M H2SO4 , 1M HCl and 1M HClO4 at 30 degrees C using absorbance measurement, electrochemical techniques; potentiodynamic polarization and AC-impedance techniques. The results obtained revealed that PAN could inhibit the corrosion of zinc effectively only in 1M HClO4 . The values of binding constants obtained for PAN in 0.5M H2SO4 , 1M HCl and 1M HClO4 solutions for zinc after fitting the data to different adsorption isotherms could be arranged as follows: perchloric acid > hydrochloric acid > sulphuric acid. This order agrees to a great extent with the values of inhibition efficiency calculated from absorbance and different electrochemical techniques.

引用

页码：9600 / 9617

页数：18

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