Keggin结构多金属氧酸铵盐的缓蚀性能评价  

Evaluation of the corrosion inhibition of ammonium polyoxometalates with Keggin structures

作　　者：张澜萃[1] 李晓辉[1] 崔利新[1] 刘照斌[2] 高岩 

机构地区：[1]辽宁师范大学化学化工学院,辽宁大连116029 [2]辽宁师范大学分析测试中心,辽宁大连116029 [3]中国石油辽阳石化公司,辽宁辽阳111003

出　　处：《工业水处理》2009年第12期52-55,共4页Industrial Water Treatment

基　　金：辽宁省教育厅科学技术研究项目(2008364)

摘　　要：在室温条件下用液相直接沉淀法合成了6种Keggin结构的磷钨酸铵盐,并进行了IR光谱表征。采用静态、动态挂片失重法研究考察了6种多金属氧酸铵盐在水介质中对20#钢的缓蚀作用,通过扫描电镜对金属表面成膜或腐蚀情况进行了分析和评价。研究结果表明,Keggin结构磷钨酸铵盐均是碳钢良好的缓蚀剂,有机铵盐的缓蚀性能优于无机铵盐。Six kinds of ammonium heteropolytungstophosphates have been synthesized by direct precipitation in solution and characterized by IR. The corrosion inhibition of 20# steel in aqueous media are investigated through static and dynamic weight-loss experiments. The filming pattern and corrosive state on the metal surface are analyzed by scanning electron microscope. The results show that the ammonium heteropolytungstophosphates with Keggin structures are all excellent corrosion inhibitors on carbon steel, and the corrosion inhibition capacity of organic ammonium salt is better than their parent acid or inorganic ammonium salt.

关 键 词：KEGGIN结构 磷钨酸 有机铵盐 缓蚀作用 

分 类 号：O614.613[理学—无机化学]