物理化学学报 >> 1989, Vol. 5 >> Issue (05): 546-550.doi: 10.3866/PKU.WHXB19890508

研究论文 上一篇    下一篇

溴化十六烷基吡啶自盐酸溶液中在铝表面上的吸附及其缓蚀作用

木冠南   

  1. 云南大学化学系
  • 收稿日期:1988-01-14 修回日期:1988-09-04 发布日期:1989-10-15
  • 通讯作者: 木冠南

ADSORPTION OF CETYL PYRIDINE BROMIDE FROM HYDROCHLORIC ACID SOLUTION ON ALUMINIUM SURFACE AND ITS CORROSION INHIBITION

Mu Guannan   

  1. Department of Chemistry; Yunnan University; Kunming
  • Received:1988-01-14 Revised:1988-09-04 Published:1989-10-15
  • Contact: Mu Guannan

摘要: 用失重法研究了溴化十六烷基呲啶对铝在盐酸溶液中的缓蚀作用, 应用吸附理论和Sekine方法处理实验数据~[4], 发现溴化十六烷基吡啶自盐酸溶液中在铝表面上产生了吸附, 且基本服从Langmuir吸附等温式。求得吸附热为35.4 kJ mol~(-1), 认为这种吸附是产生缓蚀作用的重要原因。实验还表明, 缓蚀率随温度升高而增大, 根据这些结果讨论了吸附与缓蚀作用之间的关系。

Abstract: The role of cetyl pyridine bromide in the corrosion inhibition of aluminium in hydrochloric acid has been investigated by weight loss method. The experimental data have been treated with adsorption theory and Sekine method. The adsorption heat has been calculated. It is found that adsorption of cetyl pyridine bromide from hydrochloric acid solution on aluminium surface obeys basically Langmuir′s isotherm, so the adsorption on aluminium surface was believed to be an important reason of corrosion inhibition. The corrosion inhibition efficiency increases with raising temperature. Relationship between adsorption and corrosion inhibition has been discussed according to the experimental results.