SHI Shuncun, YI Pinggui, CAO Chenzhong, et al. Synthesis of new ionic liquids and corrosion inhibition performance of its cationic imidazoline group[J]. CIESC Journal, 2005, (6): 1112-1119.
SHI Shuncun, YI Pinggui, CAO Chenzhong, et al. Synthesis of new ionic liquids and corrosion inhibition performance of its cationic imidazoline group[J]. CIESC Journal, 2005, (6): 1112-1119.DOI:
A series of new ionic liquids Ⅰ—Ⅴ with imidazoline ring were synthesized from highly pure naphthenic acids.The relationship between the alkyl connecting with N(3) of imidazoline ring and corrosion inhibition performance was investigated.The corrosion inhibition performance was measured by using the mass loss method and electrochemistry method for carbon steel samples in acidic solution.The quantum chemistry method and polarizablity effect index method were used to calculate the parameters such as front molecular orbit energy and corresponding PEI of cationic imidazoline group of ionic liquids Ⅰ—Ⅴ.Measured results and theoretical analyses indicated that corrosion inhibition efficiency of the cationic imidazoline group of ionic liquids Ⅰ—Ⅴ was decreasing as in following order:Ⅴ>Ⅳ>Ⅲ>Ⅱ>Ⅰ,and the corrosion inhibition efficiency had a good linear relationship with the such parameters as EHOMO