Spectroscopic investigations on the inhibition mechanism of propargyl alcohol for iron corrosion in hydrochloric acid at elevated temperatures
- Keio Univ., Yokohama (Japan). Dept. of Chemistry
The inhibition mechanism of propargyl alcohol (CH{triple_bond}CCH{sub 2}OH [PA]) was investigated for iron corrosion in 0.5 M hydrochloric acid at elevated temperatures using surface-enhanced Raman scattering, X-ray photoelectron, and Fourier transform infrared spectroscopies. SERS spectra of PA adsorbed on an Fe-deposited silver electrode revealed that species derived from PA have C{double_bond}C, {double_bond}C{single_bond}H, and C{single_bond}O bonds. A high inhibition efficiency (1%) of PA for Fe corrosion in 0.5 M HCl at 70 C was attributed mainly to coverage of the surface with a protective film of PA polymer and partly to adsorption of allyl alcohol (CH{sub 2}{double_bond}CHCH{sub 2}OH [AA]) formed by cathodic reduction of PA. Electroinitiated polymerization of PA at the Fe surface was proposed.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 477475
- Journal Information:
- Corrosion, Vol. 53, Issue 4; Other Information: PBD: Apr 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
pi. bonded intermediates in alcohol oxidation: Orientations of allyloxy and propargyloxy on Ag(110) by near edge x-ray absorption fine structure
Synergistic effects of inorganic and organic cations on inhibitive performance of propargyl alcohol on steel dissolution in boiling hydrochloric acid solution