The Role of Acrolein in the Inhibition of the Acid Corrosion of Iron with Propargyl Alcohol
20.09.2008 г.

The Role of Acrolein in the Inhibition of the Acid Corrosion of Iron with Propargyl Alcohol

Ya. G. Avdeev* and N. I. Podobaev**

 

* Kaluga State Pedagogical University, ul. Stepana Razina 26, Kaluga, 248023 Russia

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** Moscow State Pedagogical University, ul. Malaya Pirogovskaya 1, Moscow, 119882 Russia

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Received October 14, 2004

 

Abstract — Potentiodynamic polarization was used to investigate the effect of acrolein (formed from propargyl alcohol via acid-induced isomerization) on the electrode processes at Armco iron in hydrochloric and sulfuric acid solutions. In solutions of mineral acids, acrolein is ineffective and inferior to propargyl alcohol in the inhibition of iron corrosion. It was found that acrolein can be cathodically reduced during the corrosion process, whereas the isomerization of propargyl alcohol into acrolein should reduce the protective effect of the inhibitor.