Quaternary aryl phosphonium salts as corrosion inhibitors for iron in HCl

Nahlé, A.H., Harvey, T.J. and Walsh, F.C. (2018) Quaternary aryl phosphonium salts as corrosion inhibitors for iron in HCl. Journal of Alloys and Compounds, 765, 812-825. (doi:10.1016/j.jallcom.2018.06.241).

Record type: Article

Abstract

Cathodic and anodic Tafel extrapolation data for the corrosion inhibition of iron in deaerated 1 M HCl at 22 °C are obtained for five synthesized phosphonium salts, 4-tolyltriphenyl-phosphonium chloride (TTPPC), 4-phenoltriphenylphosphonium chloride (PTPPC), 4-anilinetriphenylphosphonium bromide (ATPPB), 4-benzyl alcoholtriphenylphosphonium chloride (BATPPC), 4-hlorophenyltriphenylphosphonium bromide (CPTPPB), and two commercially available phosphonium salts, tetraphenylphosphonium bromide (TPPB) and methyltriphenylphosphonium bromide (MTPPB). The inhibitor concentrations ranged from 1 × 10⁻⁷ to 1 × 10⁻³ M. The inhibition of iron corrosion in 1 M HCl at 22 °C was found to be in the order TPPB > BATPPC > CPTPPB > PTPPC > MTPPB > TTPPC > ATPPB.

Text

Fe Phosphonium Inhibitors for Iron in HCl Solution (Oct. 22 2017) - Accepted Manuscript

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