摘要
合成了新型的含氯咪唑啉化合物(CIM),以1H-NMR和FTIR确定其结构。采用静态失重法、动电位极化曲线、电化学阻抗等方法研究了CIM在0.5mol/L盐酸溶液中对碳钢的腐蚀抑制作用。结果表明,CIM的缓蚀率随其浓度增大而增大,且在高温时保持高效的缓蚀性能。CIM在碳钢表面的吸附行为符合Langmuir吸附等温式,属于混合型吸附。
A novel imidazoline compound,2-（2-trichloromethyl-4,5-dihydro-imidazol-1-yl）-ethylamine（CIM）was synthesized in laboratory.The structure of CIM was identified by 1H-NMR and FTIR. Weight-loss method,potentiodynamic polarization,electrochemical impedance spectroscopy（EIS）techniques and scanning electron microscopy（SEM）were used to investigate the corrosion behavior of mild steel in 0.5mol/L HCl solution with or without CIM. The results showed that the inhibition efficiency of CIM increased with increasing inhibitor concentration and kept effective at high temperatures.The imidazoline compound is a mixed-type inhibitor whose adsorption behavior onto mild steel surface can be well expressed by Langmuir isotherm equation.
出处
《腐蚀与防护》
CAS
北大核心
2015年第2期122-127,共6页
Corrosion & Protection
基金
国家重大科技专项(2013ZX07210001)
关键词
氯
咪唑啉
缓蚀剂
碳钢
高温
chlorine
imidazoline
inhibitor
carbon steel
high temperature
