摘要
应用动电位扫描、恒电位极化方法研究了Ｈ２Ｓ对丙炔醇（ＰＡ）在Ｆｅ／Ｈ２ＳＯ４体系中缓蚀作用的影响．结果表明，高浓度ＰＡ能明显抑制铁在含Ｈ２Ｓ的硫酸溶液中腐蚀的阴、阳极反应，属以抑制阳极反应为主的负催化型缓蚀剂；ＰＡ浓度较低时，因Ｈ２Ｓ、ＨＳ－与铁作用较强，使ＰＡ缓蚀效率随Ｈ２Ｓ含量的增加而降低；ＰＡ浓度较高时，其通过氢键及静电作用可完全稳定吸附物Ｆｅ（ＨＳ－）ａｄｓ，使阳极电流几乎接近于零，但此时ＰＡ对吸附物Ｆｅ（Ｈ２Ｓ）ａｄｓ作用较小．
The effect of H2S on the inhibition action of propargyl alcohol(PA) in Fe/H2SO4 system has been investigated by electrochemical potentiodynamic and potentiostatic methods. The results showed that PA could inhibit the anodic and cathodic reactions of iron corrosion effectively in H2SO4 solution containing H2S. At low content of PA the inhibition efficiency decreased with the increase of H2S content due to the strong interaction of H2S and HS- with Fe. At high content of PA, Fe(HS-)ads is stabilized owing to the hydrogen bonds and electrostatic action, which made the anodic current approach to zero. The interaction between PA and Fe(H2S)ads in this case is weak.
出处
《应用化学》
CAS
CSCD
北大核心
1999年第3期1-4,共4页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金
关键词
铁
腐蚀
硫化氢
丙炔醇
缓蚀剂
iron corrosion,propargyl alcohol,H2S,inhibition effect
