Influence of iodide ions on inhibitive performance of tetraphenyl-dithia-octaaza-cyclotetradeca-hexaene (PTAT) during pickling of mild steel in hot sulfuric acid

被引：78

作者：

Quraishi, MA ^{[1
]}

Rawat, J ^{[1
]}

机构：

[1] Aligarh Muslim Univ, Fac Engn & Technol, Dept Appl Chem, Corros Res Lab, Aligarh 202002, Uttar Pradesh, India

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2001年 / 70卷 / 01期

关键词：

pickling corrosion inhibitor; potentiodynamic polarization; hydrogen permeation; weight-loss; macrocyclic;

D O I：

10.1016/S0254-0584(00)00459-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A macrocyclic compound, namely 2,3,9,10-tetraphenyl-6,13-dithia-1,4,5,7,8,11,12,14-octaaza-cyclotetradeca-1,3,6,8,10,13-hexaene (PTAT) was synthesized to study the corrosion inhibitive effect on pickling of mild steel in 20% H2SO4 at 95 degreesC. The synergistic effect of this compound was studied by weight-loss, potentiodynamic polarization, electrochemical impedance spectroscopy and hydrogen permeation studies. The results of this investigation have shown enhancement in inhibition efficiency (IE) for 500 ppm PTAT in the presence of 0.25% KI as a synergent. Formulated inhibitor has shown better performance than commercial corrosion inhibitor (Metasave). Potentiodynamic polarization studies showed that PTAT is a predominantly cathodic inhibitor whereas Metasave is mixed in nature. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：95 / 99

页数：5

共 24 条

[11] Influence of acetylenic derivatives on corrosion of chromium and chromium containing steels in hot acid solutions [J].

Frignani, A ;

Monticelli, C ;

Trabanelli, G .

BRITISH CORROSION JOURNAL, 1999, 34 (03) :214-219

[12] CORROSION RATES FROM IMPEDANCE MEASUREMENTS - AN INTRODUCTION [J].

HLADKY, K ;

CALLOW, LM ;

DAWSON, JL .

BRITISH CORROSION JOURNAL, 1980, 15 (01) :20-25

[13]

MERCER AD, 1985, BRIT CORROS J, V20, P61, DOI 10.1179/000705985798272849

[14]

Moretti G, 1996, BRIT CORROS J, V31, P49

[15] THE EFFECT OF MOLECULAR-STRUCTURE ON HYDROGEN PERMEATION AND THE CORROSION INHIBITION OF MILD-STEEL IN ACIDIC SOLUTIONS [J].

MURALIDHARAN, S ;

QURAISHI, MA ;

IYER, SVK .

CORROSION SCIENCE, 1995, 37 (11) :1739-1750

[16] SYNTHESES AND SPECTROSCOPIC STUDIES ON TETRAAZA MACROCYCLIC COMPLEXES OF LANTHANUM(III) [J].

PANDEY, UK ;

PANDEY, OP ;

SENGUPTA, SK ;

TRIPATHI, SC .

SYNTHESIS AND REACTIVITY IN INORGANIC AND METAL-ORGANIC CHEMISTRY, 1987, 17 (06) :567-584

[17] Macrocyclic compounds as corrosion inhibitors [J].

Quraishi, MA ;

Rawat, J ;

Ajmal, M .

CORROSION, 1998, 54 (12) :996-1002

[18]

Quraishi MA, 1997, BRIT CORROS J, V32, P72

[19] Synergistic effect of iodide ions on inhibitive performance of substituted dithiobiurets during corrosion of mild steel in hot hydrochloric acid [J].

Quraishi, MA ;

Rawat, J ;

Ajmal, M .

CORROSION, 1999, 55 (10) :919-923

[20]

RAMAN A, 1986, REV CORROSION INHIBI, P20

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