Corrosion Inhibition of Imidazoline Derivates with Benzene Rings on Mild Steel in CO_2-Saturated Brine Solution  

作　　者：CHEN Guo-hao ZHAO Jing-mao 

机构地区：[1]College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,P.R.China

出　　处：《Chemical Research in Chinese Universities》2012年第4期691-695,共5页高等学校化学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.51171013)

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.

关 键 词：Corrosion inhibitor CO2 corrosion Langmuir adsorption Imidazoline derivate 

分 类 号：TG174.42[金属学及工艺—金属表面处理] TQ114.262[金属学及工艺—金属学]