芳氧亚甲基咪唑啉季铵盐的合成及缓蚀性能评价

合成了苯氧亚甲基咪唑啉季铵盐（POAI）和萘氧亚甲基咪唑啉季铵盐（NOAI），通过失重法、电化学方法研究了二者在1 mol/L HCl中对A3钢的缓蚀性能，并对二者在A3钢表面的吸附行为进行了探讨。 结果表明，二者在1 mol/L HCl中对A3钢均有较好的缓蚀作用，其中NOAI对A3钢的缓蚀性能优于POAI的缓蚀性能；两化合物均为混合型缓蚀剂。 缓蚀性能随缓蚀剂浓度和温度的增大而增大；二者在A3钢表面的吸附过程吸热，是化学吸附，符合Langmuir吸附等温式。

Synthesis of Aryloxymethyl Imidazolinium Quaternary Ammonium Salt and Its Evaluation as A Corrosion Inhibitor

Two aryloxymethyl imidazolinium quaternary ammonium salts(phenoxymethyl imidazolinyl quaternary ammonium salt(POAI) and naphthoxymethyl imidazolinyl quaternary ammonium salt(NOAI)) were synthesized. Their corrosion inhibition and adsorption behaviors on A3 steel in 1 mol/L HCl solution were studied by mass loss and electrochemical techniques. The results show that the two compounds are good inhibitors for A3 steel in 1 mol/L HCl, and they are mixed type corrosion inhibitors. NOAI was found to have a superior inhibition efficiency to POAI. The inhibition efficiency increases with the concentration of inhibitor and the temperature. The experimental results reveal that the adsorption processes are endothermic and belong to the chemical adsorption. The adsorption characteristics of inhibitors are followed by the Langmuir isotherm.