Electrochemical evidences of the protection efficiency of propargyl alcohol o low-carbo steel in ethanolic solutions by electrical conductivity measures

Authors

  • Reinaldo Simões Gonçalves Departamento de Química, Centro de Ciências Naturais e Exatas - CCNE Universidade Federal de Santa Maria - UFSM, Santa Maria, RS.
  • Natalie Maria Coradini Departamento de Química, Centro de Ciências Naturais e Exatas - CCNE Universidade Federal de Santa Maria - UFSM, Santa Maria, RS.

DOI:

https://doi.org/10.5902/2179460X26357

Abstract

It is shown that electrical conductivity measurement is a good method to characterize corrosion processes that occur on low-carbon steel in ethanolic solutions. Different aggressive coonditions were tested by changing the water content in distilled ethanol and by adding acid. Propargyl a alcohol inhibits the corrosion reaction. The specific conductivity of the solution decreases in the presence of propargyl alcohol for varying levels of aggressiveness. In dilute acetic acid ethanolic solutions, the proyection efficiency was better in 1.0mM propargyl alcohol than in the other concentrations.

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References

L. ULLER, A Tecnologia Anticorrosiva para o Àlcool Combustível no Brasil, Informativo do INT, 11(33), 5 (1985), Rio de Janeiro.

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E. CAVALCANTI; V.G. WANDERLEY; T.R.V. MIRANDA ANO L. ULLER, The Effect of Water, Sulphate and pH on the Corrosion Behaviour of Carbon Steel in Ethanolic Solutions, Electrochimica Acta, 32 (6), 935 (1987).

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A. SPINELLI AND R.S. GONCALVES, Electrochemical Studies of the Adsorption of Propargyl Alcohol on Low Carbon Steel Electrodes in H2S04 Solutions, Corrosion Science, 12, 1235, (1990).

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Published

1993-12-13

How to Cite

Gonçalves, R. S., & Coradini, N. M. (1993). Electrochemical evidences of the protection efficiency of propargyl alcohol o low-carbo steel in ethanolic solutions by electrical conductivity measures. Ciência E Natura, 15(15), 45–56. https://doi.org/10.5902/2179460X26357

Issue

CIÊNCIA E NATURA, V. 15, N. 15, 1993

Section

Articles

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