Synthesis of two Quaternary Ammonium Imidazolines and Study on their Inhibition Action and Adsorption Behaviors on A3 Steel in Hydrochloric Solution

J Chin Soc Corr Pro

2008, Vol. 28

Issue (5): 291-295 DOI:

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Synthesis of two Quaternary Ammonium Imidazolines and Study on their Inhibition Action and Adsorption Behaviors on A3 Steel in Hydrochloric Solution

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Abstract Two imidazolinyl intermediates are prepared from phenylacetic acid, α-naphthylacetic acid and diethylenetriamine firstly, and then they react with the solution of sodium chloroacetate into two imidazolinyl quaternary ammonium salts(PAIPI and NAIPI). Their influence on the inhibition of corrosion of A3 steel in 1 mol/L HCl solution is studied by weight loss and electrochemical techniques. The obtained results show that the two compounds are good inhibitors for A3 steel in 1 mol/L HCl . But the inhibition efficiency of NAIPI is better than PAIPI and Two imidazolinyl quaternary ammonium salts are anode-type corrosion inhibitors. The adsorption of two imidazolinyl quaternary ammonium salts on A3 steel is studied from the results of the electrochemical technique, and the experimental results reveal that adsorption of two imidazolinyl quaternary ammonium salts on A3 steel surface is monolayer and belongs to physical absorption.

Key words: quaternary ammonium imidazoline inhibitor A3 steel 1 mol/L HCl

Received: 08 January 2007

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;. Synthesis of two Quaternary Ammonium Imidazolines and Study on their Inhibition Action and Adsorption Behaviors on A3 Steel in Hydrochloric Solution. J Chin Soc Corr Pro, 2008, 28(5): 291-295 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2008/V28/I5/291

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