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Quaternary aryl phosphonium salts as corrosion inhibitors for iron in HCl

Quaternary aryl phosphonium salts as corrosion inhibitors for iron in HCl
Quaternary aryl phosphonium salts as corrosion inhibitors for iron in HCl

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.

Polarisation, Tafel region, Voltammetry
0925-8388
812-825
Nahlé, A.H.
d5b07ebd-09fb-4260-bff9-9ff1df45576f
Harvey, T.J.
3b94322b-18da-4de8-b1af-56d202677e04
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
Nahlé, A.H.
d5b07ebd-09fb-4260-bff9-9ff1df45576f
Harvey, T.J.
3b94322b-18da-4de8-b1af-56d202677e04
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2

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.

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Fe Phosphonium Inhibitors for Iron in HCl Solution (Oct. 22 2017) - Accepted Manuscript
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Accepted/In Press date: 19 June 2018
e-pub ahead of print date: 27 June 2018
Published date: 15 October 2018
Keywords: Polarisation, Tafel region, Voltammetry

Identifiers

Local EPrints ID: 424951
URI: http://eprints.soton.ac.uk/id/eprint/424951
ISSN: 0925-8388
PURE UUID: 9e3652a0-efb5-458b-ab50-d8796f58de30

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Date deposited: 05 Oct 2018 16:30
Last modified: 07 Oct 2020 04:10

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Contributors

Author: A.H. Nahlé
Author: T.J. Harvey
Author: F.C. Walsh

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