Surface-enhanced Raman scattering spectroscopy studies on the inhibition mechanism of propargyl alcohol for iron corrosion in hydrochloric acid

被引：21
|
作者：
Aramaki, K
Fujioka, E
机构：
[1] Department of Chemistry, Faculty of Science and Technology, Keio University, Kohoku-ku, Yokohama 223
来源：
CORROSION | 1996年 / 52卷 / 02期
关键词：
adsorption; hydrochloric acid; inhibition; iron; polymerization; propargyl alcohol; surface-enhanced Raman spectroscopy;
D O I：
10.5006/1.3292107
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In situ spectroscopic information on species adsorbed on the surface of iron in hydrochloric acid (HCl) solutions at 25 degrees C was obtained by surface-enhanced Raman scattering (SERS) spectroscopy of propargyl alcohol (HC=CCH2OH, or PA) using a SERS-active silver electrode covered with a thin layer of deposited iron. The SERS spectra of PA indicated the absence of a C=C bond and the presence of C=C, =C-H, and C-O bonds in the species derived from PA at the surface. Polarization curves of iron in 0.5 M HCl at 25 degrees C showed inhibition of the anodic process rather than of the cathodic one. Coverage of the iron surface with a film of the PA polymer and adsorption of allyl alcohol (CH2=CHCH2OH, or AA) on the surface were concluded from the results.
引用
收藏
页码：83 / 91
页数：9
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