摘要
Corrosion inhibition of three imidazoline derivates with different numbers of benzene rings,namely 2-phenyl-1-ethylamino imidazoline（CI-1）,2-phenyl-1-ethylamino-1-methylbenzyl quaternary imidazoline（CI-12） and 2-phenyl-1-benzoyl ethylamino imidazoline（CI-13）,on mild steel in CO2-saturated brine solution was evaluated by mass-loss method and potentiodynamic polarization method.The results show that the three imidazoline derivates can inhibit CO2 corrosion effectively with CI-12 ranking the highest.They mainly restrain the anodic dissolution and act as anodic-type inhibitors.The adsorptions of these derivates on the mild steel surface follow the Langmuir adsorption isothermal equation and belong to chemical adsorption.
Corrosion inhibition of three imidazoline derivates with different numbers of benzene rings,namely 2-phenyl-1-ethylamino imidazoline（CI-1）,2-phenyl-1-ethylamino-1-methylbenzyl quaternary imidazoline（CI-12） and 2-phenyl-1-benzoyl ethylamino imidazoline（CI-13）,on mild steel in CO2-saturated brine solution was evaluated by mass-loss method and potentiodynamic polarization method.The results show that the three imidazoline derivates can inhibit CO2 corrosion effectively with CI-12 ranking the highest.They mainly restrain the anodic dissolution and act as anodic-type inhibitors.The adsorptions of these derivates on the mild steel surface follow the Langmuir adsorption isothermal equation and belong to chemical adsorption.
基金
Supported by the National Natural Science Foundation of China(No.51171013)
