Surface-enhanced Raman scattering spectroscopy studies on the inhibition mechanism of propargyl alcohol for iron corrosion in hydrochloric acid
- Keio Univ., Yokohama (Japan)
In situ spectroscopic information on species adsorbed on the surface of iron in hydrochloric acid (HCl) solutions at 25 C was obtained by surface-enhanced Raman scattering (SERS) spectroscopy of propargyl alcohol (HC{triple_bond}CCH{sub 2}OH, 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{triple_bond}C bond and the presence of C{double_bond}C, {double_bond}C{single_bond}H, and C{single_bond}O bonds in the species derived from PA at the surface. Polarization curves of iron in 0.5 M HCl at 25 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 (CH{sub 2}{double_bond}CHCH{sub 2}ON, or AA) on the surface were concluded from the results.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 201369
- Journal Information:
- Corrosion, Vol. 52, Issue 2; Other Information: PBD: Feb 1996
- Country of Publication:
- United States
- Language:
- English
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