Kinetics of armco iron dissolution in an anhydrous methanol and hydrochloric acid solution

Kinetics of armco iron dissolution in an anhydrous methanol and hydrochloric acid solution

The polarization behaviour of Armco iron in anhydrous solutions of CH 3OH+HCl and CH 3OH+HCl+LiCl was studied by the potentiostatic method. The following reaction orders were found for the anodic process: Z a(Cl −) = 1.7 –1.82 and Z a(H +) = 0. The following mechanism of dissolution is proposed: Fe+...

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Veröffentlicht in:Electrochimica acta 1984, Vol.29 (1), p.15-19
Hauptverfasser: Sternberg, S., Brânzoi, V.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Corrosion
Corrosion mechanisms
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Metals, semimetals and alloys
Metals. Metallurgy
Physics
Specific materials
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Zusammenfassung:The polarization behaviour of Armco iron in anhydrous solutions of CH 3OH+HCl and CH 3OH+HCl+LiCl was studied by the potentiostatic method. The following reaction orders were found for the anodic process: Z a(Cl −) = 1.7 –1.82 and Z a(H +) = 0. The following mechanism of dissolution is proposed: Fe+Cl − ⇌ FeCl − ads , FeCl − ads +Cl − → FeCl 2+2 e (rate-determining step), FeCl 2⇌FeP 2+ + 2Cl −.
ISSN:0013-4686
1873-3859
DOI:10.1016/0013-4686(84)80031-6