TY - JOUR
T1 - The effect of ionic liquids with imidazolium and pyridinium cations on the corrosion inhibition of mild steel in acidic environment
AU - Likhanova, Natalya V.
AU - Domínguez-Aguilar, Marco A.
AU - Olivares-Xometl, Octavio
AU - Nava-Entzana, Noel
AU - Arce, Elsa
AU - Dorantes, Hector
PY - 2010/6
Y1 - 2010/6
N2 - Ionic liquids with chemical formula 1,3-dioctadecylimidazolium bromide and N-Octadecylpyridinium bromide were synthesized by conventional and microwave-assisted reactions, respectively. Ionic liquids tested as corrosion inhibitors after polarization curves displayed corrosion protection efficiency within 82-88% at 100 ppm for mild steel in a 1 M aqueous solution of sulfuric acid. Standard free energy indicated that corrosion inhibition occurred by a chemical adsorption process. Surface analysis (SEM, EDX) completed by XRD and Mössbauer spectroscopy indicated the presence of carbon species pertaining to inhibitor and corrosion products, which was rationalized in an inhibition mechanism.
AB - Ionic liquids with chemical formula 1,3-dioctadecylimidazolium bromide and N-Octadecylpyridinium bromide were synthesized by conventional and microwave-assisted reactions, respectively. Ionic liquids tested as corrosion inhibitors after polarization curves displayed corrosion protection efficiency within 82-88% at 100 ppm for mild steel in a 1 M aqueous solution of sulfuric acid. Standard free energy indicated that corrosion inhibition occurred by a chemical adsorption process. Surface analysis (SEM, EDX) completed by XRD and Mössbauer spectroscopy indicated the presence of carbon species pertaining to inhibitor and corrosion products, which was rationalized in an inhibition mechanism.
KW - A. Steel
KW - B. Electrochemical calculation
KW - B. Polarization
KW - C. Acid corrosion
KW - C. Acid inhibition
UR - http://www.scopus.com/inward/record.url?scp=77950296596&partnerID=8YFLogxK
U2 - 10.1016/j.corsci.2010.02.030
DO - 10.1016/j.corsci.2010.02.030
M3 - Artículo
SN - 0010-938X
VL - 52
SP - 2088
EP - 2097
JO - Corrosion Science
JF - Corrosion Science
IS - 6
ER -