Feasibility of Using Ionic Liquids as an Environment Friendly Corrosion Inhibitor of Carbon Steel in the Saline Solution

In this reportwork, the feasibility of using ionic liquids 1-ethyl-3-methylimidazolium
tosylate, [EMIM][TOS], and 1-butyl-3-methylimidazolium tosylate, [BMIM][TOS]
as inhibitor of carbon steel corrosion in saline solutions were investigated using
weight loss and electrochemical methods. Carbon steel A760, which is widely used
for piping in many industries such as water treatment and oil and gas platform was
used as carbon steel sample. Seawater solution was taken from Pangkor Beach to
mimic the real technical condition of saline solution in real practice. The
methodology used in consisted of two major stages. First, in order to produce the
desired ionic liquids, 1-ethyl-3-methylimidazolium chloride, [EMIm]Cl, and 1-butyl-
3-methylimidazolium chloride, [BMIm]Cl,were reacted with p-toulenesulfonic acid.
The characterization of the synthesized ionic liquids was done using 1H and 13CNMR
spectroscopies.