应用化学

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2种癸二酸咪唑啉季铵盐的合成及缓蚀性能评价

亓树成,刘瑞泉*   

  1. (新疆大学化学化工学院 乌鲁木齐 830046)
  • 收稿日期:2011-07-25 修回日期:2011-10-28 出版日期:2012-07-10 发布日期:2012-07-10
  • 通讯作者: 刘瑞泉,教授; Tel:0991-8582654; Fax:0991-8582807; E-mail:Liu.rq@163.com; 研究方向:金属腐蚀与防护

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

摘要: 合成了2种癸二酸咪唑啉季铵盐癸二酸-水杨酸咪唑啉季铵盐(SSAI)和癸二酸咪唑啉季铵盐(SAI),并采用失重法和电化学方法研究了这2种咪唑啉季铵盐对N80钢在1 mol/L HCl溶液中的缓蚀性能和吸附行为。 结果表明,在1 mol/L HCl溶液中这2种化合物对N80钢均有较好的缓蚀作用,缓蚀效率大小顺序为SSAI>SAI。 SSAI和SAI均为混合偏阳极型缓蚀剂。 2种化合物在N80钢表面的吸附服从Langmuir吸附等温式,属于化学吸附。

关键词: N80钢, 咪唑啉, 缓蚀剂, 吸附行为

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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