TY - JOUR
T1 - Synthesis and corrosion inhibition mechanism of ammonium-based ionic liquids on API 5L X60 steel in sulfuric acid solution
AU - Olivares-Xometl, Octavio
AU - Álvarez-Álvarez, Edith
AU - Likhanova, Natalya Victorovna
AU - Lijanova, Irina Victorovna
AU - Hernández-Ramírez, Raquel E.
AU - Arellanes-Lozada, Paulina
AU - Varela-Caselis, Jenaro L.
N1 - Publisher Copyright:
© 2017 Informa UK Limited, trading as Taylor & Francis Group.
PY - 2018/5/19
Y1 - 2018/5/19
N2 - A novel class of four new-free-halide-ionic liquids (ILs) derived from ammonium was synthesized and characterized via spectroscopic methods such as 1H NMR and 13C NMR. The synthesized compounds were evaluated as corrosion inhibitors (CIs) of API 5L X60 steel in 1 M sulfuric acid by means of the potentiodynamic polarization and weight loss techniques. The results confirmed that the inhibition efficiency displayed by the four ILs is a function of their concentration and molecular structure. The obtained inhibition efficiency (η) ranged from 51 to 89%, confirming that the new class of ILs is good for corrosion inhibition purposes. The analysis of the potentiodynamic results showed that these compounds inhibit the corrosion of steel, classifying them as mixed-type CIs. The adsorption process of these new CIs on the API 5L X60 steel surface, which obeyed the Langmuir isotherm, was found to be physical and chemical. The SEM and EDX analyses confirmed the protection of steel in the corrosive medium.
AB - A novel class of four new-free-halide-ionic liquids (ILs) derived from ammonium was synthesized and characterized via spectroscopic methods such as 1H NMR and 13C NMR. The synthesized compounds were evaluated as corrosion inhibitors (CIs) of API 5L X60 steel in 1 M sulfuric acid by means of the potentiodynamic polarization and weight loss techniques. The results confirmed that the inhibition efficiency displayed by the four ILs is a function of their concentration and molecular structure. The obtained inhibition efficiency (η) ranged from 51 to 89%, confirming that the new class of ILs is good for corrosion inhibition purposes. The analysis of the potentiodynamic results showed that these compounds inhibit the corrosion of steel, classifying them as mixed-type CIs. The adsorption process of these new CIs on the API 5L X60 steel surface, which obeyed the Langmuir isotherm, was found to be physical and chemical. The SEM and EDX analyses confirmed the protection of steel in the corrosive medium.
KW - Corrosion inhibitor
KW - acidic medium
KW - inhibition efficiency
KW - ionic liquid
KW - polarization
UR - http://www.scopus.com/inward/record.url?scp=85032800590&partnerID=8YFLogxK
U2 - 10.1080/01694243.2017.1397422
DO - 10.1080/01694243.2017.1397422
M3 - Artículo
SN - 0169-4243
VL - 32
SP - 1092
EP - 1113
JO - Journal of Adhesion Science and Technology
JF - Journal of Adhesion Science and Technology
IS - 10
ER -