The effect of SO3-Ph-BTBP on stainless steel corrosion in nitric acid

Wilbraham, Richard J. and Boxall, Colin (2015) The effect of SO3-Ph-BTBP on stainless steel corrosion in nitric acid. Nukleonika, 60 (4). pp. 865-869. ISSN 0029-5922

[img]
Microsoft Word (Nukleonika BTBP manuscipt - Rev)
Nukleonika_BTBP_manuscipt_Rev.docx - Accepted Version
Available under License Creative Commons Attribution.

Download (359kB)
[img]
Preview
PDF ([Nukleonika] The effect of SO3-Ph-BTBP on stainless steel corrosion in nitric acid)
_Nukleonika_The_effect_of_SO3_Ph_BTBP_on_stainless_steel_corrosion_in_nitric_acid.pdf - Published Version
Available under License Creative Commons Attribution-NonCommercial-NoDerivs.

Download (216kB)

Abstract

SO3-Ph-BTBP is a hydrophilic tetra-N-dentate ligand proposed for An(III)/Ln(III) separation by solvent extraction, and a candidate for use in future advanced reprocessing schemes such as GANEX and SANEX. We present the first study of the effect of SO3-Ph-BTBP on the corrosion behavior of stainless steels. Specifically, studies have been performed using steels and conditions equivalent to those found in relevant nuclear reprocessing flow sheets. SO3-Ph-BTBP has been shown to have little effect on either steel passivation or reductive dissolution. However, if driven cathodically into a region of hydrogen evolution at the electrode surface or conversely anodically into a region of transpassive dissolution, observed currents are reduced in the presence of SO3-Ph-BTBP, suggesting corrosion inhibition of the steel potentially through weak absorption of a SO3-Ph-BTBP layer at the metal-solution interface. The lack of any observed corrosion acceleration via complexation of Fe3+ is surprising and has been suggested to be due to the slow extraction kinetics of SO3-Ph-BTBP as a result of a requirement for a trans- to cis-conformational change before binding.

Item Type:
Journal Article
Journal or Publication Title:
Nukleonika
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1600/1604
Subjects:
ID Code:
84022
Deposited By:
Deposited On:
17 Jan 2017 09:42
Refereed?:
Yes
Published?:
Published
Last Modified:
05 Dec 2020 03:18