TY - JOUR
T1 - Adsorption and performance of ammonium-based ionic liquids as corrosion inhibitors of steel
AU - Arellanes-Lozada, Paulina
AU - Olivares-Xometl, Octavio
AU - Likhanova, Natalya V.
AU - Lijanova, Irina V.
AU - Vargas-García, Jorge R.
AU - Hernández-Ramírez, Raquel E.
N1 - Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/9/1
Y1 - 2018/9/1
N2 - Methyltrioctylammonium methyl sulfate (TMA) and trimethyltetradecylammonium methyl sulfate (TTA) were synthetized as novel quaternary-ammonium-derived ionic liquids (ILs) in order to be evaluated as corrosion inhibitors (CIs) of API-X52 steel in 1 M HCl. Electrochemical techniques were used to evaluate the anticorrosive effect, finding that TMA and TTA worked as mixed-type CIs and inhibited the corrosion process depending on the temperature, immersion time and IL concentration, being remarkably effective at 40 °C, which was attributed to the high thermal stability of the methyl sulfate anions. X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and atomic force microscopy (AFM) were used to elicit the chemical composition and surface morphology of steel in the presence of CIs whose adsorption processes involved strong electrostatic interactions between the metal, chloride ions, methyl sulfate anions and quaternary ammonium cations in the ILs. The results allowed the development of a corrosion inhibition mechanism.
AB - Methyltrioctylammonium methyl sulfate (TMA) and trimethyltetradecylammonium methyl sulfate (TTA) were synthetized as novel quaternary-ammonium-derived ionic liquids (ILs) in order to be evaluated as corrosion inhibitors (CIs) of API-X52 steel in 1 M HCl. Electrochemical techniques were used to evaluate the anticorrosive effect, finding that TMA and TTA worked as mixed-type CIs and inhibited the corrosion process depending on the temperature, immersion time and IL concentration, being remarkably effective at 40 °C, which was attributed to the high thermal stability of the methyl sulfate anions. X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and atomic force microscopy (AFM) were used to elicit the chemical composition and surface morphology of steel in the presence of CIs whose adsorption processes involved strong electrostatic interactions between the metal, chloride ions, methyl sulfate anions and quaternary ammonium cations in the ILs. The results allowed the development of a corrosion inhibition mechanism.
KW - Ammonium-based ionic liquids
KW - Corrosion inhibition mechanism
KW - Corrosion inhibitor
KW - Steel
UR - http://www.scopus.com/inward/record.url?scp=85048089291&partnerID=8YFLogxK
U2 - 10.1016/j.molliq.2018.04.153
DO - 10.1016/j.molliq.2018.04.153
M3 - Artículo
SN - 0167-7322
VL - 265
SP - 151
EP - 163
JO - Journal of Molecular Liquids
JF - Journal of Molecular Liquids
ER -