Chinese Journal of Applied Chemistry

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Synthesis and Inhibition Performance Evaluation of Two Sebacic Acid Imidazoline Quaternary Ammonium Salts

QI Shucheng, LIU  Ruiquan*   

  1. (College of Chemistry and Chemical Engineering,Xinjiang University,Urumqi  830046,China)
  • Received:2011-07-25 Revised:2011-10-28 Published:2012-07-10 Online:2012-07-10

Abstract: Two sebacic acid imidazoline quaternary ammonium salts, sebacic acid-salicylic acid imidazoline quaternary ammonium salts(SSAI) and sebacic acid imidazoline quaternary ammonium salts(SAI), were synthesized and their inhibition action and adsorption behavior on N80 steel in 1 mol/L hydrochloric solution were investigated by means of mass loss and electrochemical techniques. It was showed that the two compounds had good corrosion inhibition for N80 steel in 1 mol/L HCl solution. SSAI was found to have a superior inhibition efficiency to SAI. Both SSAI and SAI were mixed-type inhibitors and mainly inhibited anode process against N80 steel in 1 mol/L HCl solution. The experimental results revealed that the adsorption processes were exothermic reaction and belong to chemical adsorption.

Key words: N80 Steel, imidazoline, corrosion inhibitor, adsorption behavior

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