喹啉季铵盐与有机胺复配缓蚀剂的酸化缓蚀机理研究  

Inhibition Principles of the Compound Acidizing Corrosion Inhibitor Made from Quinoline Quaternary Ammonium Salt and Organoamine

作　　者：王蓉莎[1] 邓皓[1] 

机构地区：[1]江汉石油学院应用化学系

出　　处：《江汉石油学院学报》1994年第3期69-73,共5页Journal of Jianghan Petroleum Institute

摘　　要：笔者以喹啉季铵盐和有机胺为原料复配的缓蚀剂，能耐高温、耐浓盐酸，酸化缓蚀性能优良。文中应用电化学极化曲线法和吸附理论对这种缓蚀剂的缓蚀机理进行了讨论，认为该缓蚀剂属于混合型缓蚀剂，它对金属腐蚀的阴、阳极过程同时起抑制作用。其原因是盐酸中的ＣＩ－与该缓蚀剂中的有机阳离子以交错吸附方式吸附于金属铁表面，表面吸附力大，吸附膜稳定性强，缓蚀作用高。实验表明该缓蚀剂的缓蚀效率可达９２．４％以上．另外，缓蚀增效剂与该缓蚀剂在盐酸性溶液中能产生一定的缓蚀协同效应。A new type of acidizing corrosion inhibitor is synthesized, made from quinoline quaternary ammonium salt and organoamine, which is thermostable and hydrochloric-acid-resisting, and has good performance for acidizing inhibition. It is discussed for protection mechanism of the inhibitor with the electrochemical polarization curves and the adsorption theory, and suggested that the inhibitor belongs to combined type which retards cathodic and anodic process of metal corrosion at the same time. This is caused by the fact that chlorid ion in the hydrochloric acid and organic cationic in the inhibitor are adsorbed on surface of the metallic iron. The experimental results show the inhibitor has the inhibition efficiency up to 92. 4%. In addition, the inhibition synerism may be resulted from the synergist and the inhibitor in hydrochloric solution.

关 键 词：酸化设备 缓蚀剂 腐蚀 喹啉季铵盐 胺 

分 类 号：TG174.42[金属学及工艺—金属表面处理]