物理化学学报 >> 2008, Vol. 24 >> Issue (02): 338-344.doi: 10.3866/PKU.WHXB20080227

研究简报 上一篇    下一篇

碱性介质中POTAS和PDTAS对铜的缓蚀作用

张秀娟; 刘瑞泉; 王献群   

  1. 新疆大学化学化工学院, 乌鲁木齐 830046
  • 收稿日期:2007-08-09 修回日期:2007-11-08 发布日期:2008-01-26
  • 通讯作者: 刘瑞泉 E-mail:liu.rq@163.com

Inhibition Action and Adsorption Behavior of POTAS and PDTAS on Copper in Alkaline Medium

ZHANG Xiu-Juan; LIU Rui-Quan; WANG Xian-Qun   

  1. College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, P. R. China
  • Received:2007-08-09 Revised:2007-11-08 Published:2008-01-26
  • Contact: LIU Rui-Quan E-mail:liu.rq@163.com

摘要: 合成了两种吡唑啉酮衍生物POTAS 和PDTAS, 并采用失重法和电化学方法研究了这两种吡唑啉酮衍生物对铜在5%(w)NaHCO3水溶液中的缓蚀性能和吸附行为. 结果表明, 在5%NaHCO3水溶液中这两种化合物对铜均有较好的缓蚀作用, 缓蚀效率大小顺序为POTAS>PDTAS. 并且POTAS与PDTAS均为混合型缓蚀剂. 两种化合物在铜表面的吸附均为单层吸附, 属于物理吸附.

关键词: 缓蚀剂, 铜, 吡唑啉酮, NaHCO3, 吸附行为

Abstract: Two pyrazolone compounds, POTAS and PDTAS, were synthesized and their inhibition action and adsorption behavior on copper in aqueous NaHCO3 (mass fraction 5%) solution were investigated by means of mass loss and electrochemical techniques. It was showed that the two compounds had good corrosion inhibition for copper in NaHCO3 solution. The inhibition efficiency of the two compounds was found to decrease as follows: POTAS>PDTAS. Both POTAS and PDTAS were mixed-type inhibitors. The results of experiment revealed that the adsorption on copper surface was monolayer adsorption. The adsorption processes were exothermic reaction and belong to physical absorption.

Key words: Inhibitor, Copper, Pyrazolone, NaHCO3, Adsorption behavior

MSC2000: 

  • O646.6