nam-rareearth4hydroxycinnama-2014.pdf (1.74 MB)
Rare earth 4-hydroxycinnamate compounds as carbon dioxide corrosion inhibitors for steel in sodium chloride solution
journal contribution
posted on 2014-01-01, 00:00 authored by Dang Nam Nguyen, Motilal Mathesh, Bruce HintonBruce Hinton, Mike Yongjun TanMike Yongjun Tan, Maria ForsythMaria ForsythA series of rare earth 4-hydroxycinnamate compounds including Ce(4OHCin)3, La(4OHCin)3, and Pr(4OHCin)3 has been synthesized and evaluated as novel inhibitors for carbon dioxide corrosion of steel in CO2-saturated sodium chloride solutions. Electrochemical measurements and surface analysis have shown that these REM(4OHCin)3 compounds effectively inhibited CO2 corrosion by forming protective inhibiting deposits that shut down the active electrochemical corrosion sites on the steel surface. Inhibition efficiency was found to increase in the order Ce(4OHCin)3 < La(4OHCin)3 < Pr(4OHCin)3 and with increase in inhibitor concentration up to 0.63 mM. Detailed insights into corrosion inhibition mechanism of these compounds in carbon dioxide environment are also provided.
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Journal
Journal of the electrochemical societyVolume
161Issue
12Pagination
C527 - C534Publisher
Electrochemical SocietyLocation
Pennington, NJPublisher DOI
ISSN
0013-4651Language
EnglishPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2014, Electrochemical SocietyUsage metrics
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