头孢哌酮-镧配合物对碳钢的缓蚀性能  

Corrosion inhibition performance of the cefoperazone-lanthanide coordination compound for carbon steel

作　　者：王璐 郑天宇 刘金彦[1] WANG Lu;ZHENG Tian-yu;LIU Jin-yan(College of Chemistry and Chemical Engineering,Inner Mongolia University of Science&Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学化学与化工学院

出　　处：《化学研究与应用》2020年第2期239-245,共7页Chemical Research and Application

基　　金：国家自然科学基金项目(21463016)资助

摘　　要：头孢哌酮钠(CFPS)和稀土离子La^3+在水溶液中能够形成配合物,采用电导法和高效液相色谱法研究了配合物的形成。采用失重法、电化学法、扫描电子显微镜法(SEM)和X射线光电子能谱法(XPS)研究了La^3+和CFPS以及CFPS-La^3+在HCl介质中对碳钢表面的缓蚀性能。单一CFPS在最佳浓度5×10^-4 mol·L-1时,其缓蚀效率为62%,而La^3+对碳钢的缓蚀作用不明显。当两者配合时,CFPS浓度仍为5×10^-4 mol·L-1,保持CFPS和La3+的摩尔比为2∶1,缓蚀效率可达90%以上,表明CFPS-La^3+对碳钢的缓蚀效果比单一药物或稀土好。The coordination compound of cefoperazone sodium(CFPS)and rare earth ion La^3+ in aqueous solution were studied by conductance and high performance liquid chromatography(HPLC).The corrosion inhibition of carbon steel in HCl solution byCFPS or La^3+ and CFPS-La^3+ had been studied by weight loss measurement,electrochemical measurement,scanning electron microscope(SEM)and X-ray photoelectron spectroscopy(XPS).The inhibition efficiency of single cefoperazone sodium reached 62% at optimum concentration 5×10^-4mol·L^-1.Meanwhile,La3+ almost had no inhibition corrosion performance in acid medium.When CFPS and rare earth ion La3+ mixed and the molar ratio kept 2∶1,the inhibition efficiency achieved above 90%at the cefoperazone sodium concentration 5×10^-4mol·L^-1.It showed that CFPS-La^3+ had the best corrosion inhibition effect on carbon steel among the three corrosion inhitior CFPS,La3+ and CFPS-La^3+.

关 键 词：头孢哌酮钠 LA^3+ 配合物 缓蚀性能 

分 类 号：O646.6[理学—物理化学]