Chinese Journal of Applied Chemistry

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Synthesis of Aryloxymethyl Imidazolinium Quaternary Ammonium Salt and Its Evaluation as A Corrosion Inhibitor

YAN Yin1* , LIU Ruiquan2   

  1. (1.Department of Chemistry and Environmental Science,Kashgar Teachers′ College,Kashgar 844000,China;
    2.College of Chemistry and Chemical Engineering,Xinjiang University,Urumqi 830046,China)
  • Received:2013-10-11 Revised:2013-11-29 Published:2014-07-10 Online:2014-07-10

Abstract: Two aryloxymethyl imidazolinium quaternary ammonium salts(phenoxymethyl imidazolinyl quaternary ammonium salt(POAI) and naphthoxymethyl imidazolinyl quaternary ammonium salt(NOAI)) were synthesized. Their corrosion inhibition and adsorption behaviors on A3 steel in 1 mol/L HCl solution were studied by mass loss and electrochemical techniques. The results show that the two compounds are good inhibitors for A3 steel in 1 mol/L HCl, and they are mixedtype corrosion inhibitors. NOAI was found to have a superior inhibition efficiency to POAI. The inhibition efficiency increases with the concentration of inhibitor and the temperature. The experimental results reveal that the adsorption processes are endothermic and belong to the chemical adsorption. The adsorption characteristics of inhibitors are followed by the Langmuir isotherm.

Key words: aryloxymethy imidazolinium quaternary ammonium salt, corrosion inhibitor, A3 steel

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