高效咪唑啉衍生物的合成及其对J55钢在饱和CO_(2)溶液中的缓蚀性  

Synthesis of High Efficient Imidazoline Derivatives and Their Corrosion Inhibition on J55 Steel in Saturated CO_(2) Solution

作　　者：魏晓静[1] 石鑫[1,2] 曾文广[1] 闻小虎[1] 刘冬梅[1] 李强[3] 于小荣[3] WEI Xiao-jing;SHI Xin;ZENG Wen-guang;WEN Xiao-hu;LIU Dong-mei;LI Qiang;YU Xiao-rong(Northwest Oilfield Branch, China Petrochemical Corporation, Urumqi 830011, China;Improvedrecovery in fracture-cave type reservoirs in Sinopec Key Laboratory, Urumqi 830011, China;College of Chemical and Environmental Engineering, Yangtze University, Jingzhou 432000, China)

机构地区：[1]中国石油化工股份有限公司西北油田分公司,新疆乌鲁木齐830011 [2]中国石化缝洞型油藏提高采收率重点试验室,新疆乌鲁木齐830011 [3]长江大学化学与环境工程学院,湖北荆州432000

出　　处：《合成化学》2021年第2期132-136,共5页Chinese Journal of Synthetic Chemistry

基　　金：国家自然科学基金资助项目(51704035);湖北省教育厅科学技术研究项目(Q20181309)

摘　　要：对于井下CO_(2)对碳钢腐蚀严重的问题,提出以亚油酸和四乙烯五胺(TEP)为反应性单体合成产率高达98.34%的高效咪唑啉缓蚀剂(GIM),结构经IR确证。并采用静态失重法和电化学方法评价了缓蚀剂对J55钢片在含有饱和CO_(2)的3.5%NaCl溶液中的缓蚀性能。结果表明:50℃下,未添加缓蚀剂的钢片的腐蚀速率为0.4561 mm/a;当缓蚀剂浓度达到10×10^(-4) mol/L时,钢片的腐蚀速率降低到0.04017 mm/a,缓蚀剂的加入降低了对J55钢片的腐蚀速率,缓蚀效率高达90%以上。电化学实验结果表明:缓蚀剂的加入能够显著降低其腐蚀电流密度,从而有效减缓金属表面的电化学反应的进行。For the serious problem of carbon steel corrosion caused by underground CO_(2).A high efficient imidazoline inhibitor(GIM)with 98.34%yield was prepared,and the organic functional groups of the synthesized products was characterized by IR spectroscopy.The corrosion inhibition of J55 steel sheet in 3.5%NaCl solution containing saturated CO_(2) was evaluated by static weight loss method and electrochemical method.The experimental results show that the corrosion rate of steel sheet without inhibitor is 0.4561 mm a at 50℃.When the concentration of inhibitor reaches 10×10-4 mol/L,the corrosion rate of steel sheet decreases to 0.04017 mm/a,and the corrosion efficiency is over 90%.The results of electrochemical experiments show that the addition of inhibitors can significantly reduce the corrosion current density,thus effectively slowing down the electrochemical reaction on the metal surface.

关 键 词：四乙烯五胺 缓蚀剂 腐蚀速率 缓蚀效率 电流密度 合成 电化学 

分 类 号：O626[理学—有机化学]