十二烯基丁二酸单乙醇酰胺在低温酸性条件下的缓蚀性能
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摘要
为了获得低毒脂肪酸单酰胺缓蚀剂,以十二烯基丁二酸和单乙醇胺为原料合成十二烯基丁二酸单乙醇酰胺。利用红外光谱仪对产物结构进行表征;通过旋转挂片失重法及电化学方法考察了十二烯基丁二酸单乙醇酰胺在低温HCl+H2S中对A3钢的缓蚀效果,并采用扫描电镜观察腐蚀形貌。结果表明:缓蚀剂浓度为75 mg/L,搅拌转速为90 r/min,腐蚀温度为50℃,时间为6 h条件下,十二烯基丁二酸单乙醇酰胺缓蚀剂的缓蚀率高达94.37%。
Dodecencvlsuccinic acid monoethanol amide was synthesized with dodecencylsuccinic acid and monoethanolamine as the raw materials.The chemical structure of as-synthesized product was characterized by Fourier transform infrared spectrometry.Rotary weigh- loss method and electrochemical testing method were used to investigate the corrosion inhibition efficiency of as-synthesized product for A3 steel in HCl + H_2S solution under low temperature.The morphology of the corroded surface of A3 steel was observed with a scanning electron microscope.Results showed that as-synthesized dodecencylsuccinic acid monoethanol amide was able to effectively inhibit the corrosion of A3 steel in HC1 + H_2S solution.Particularly,under inhibitor concentration of75 mg/L,corrosive medium temperature of 50℃,stirring paddle speed of 90 r/min,and immersion time of 6 h in corrosive medium,the corrosion inhibition efficiency was as much as 94.37%.
Dodecencvlsuccinic acid monoethanol amide was synthesized with dodecencylsuccinic acid and monoethanolamine as the raw materials.The chemical structure of as-synthesized product was characterized by Fourier transform infrared spectrometry.Rotary weigh- loss method and electrochemical testing method were used to investigate the corrosion inhibition efficiency of as-synthesized product for A3 steel in HCl + H_2S solution under low temperature.The morphology of the corroded surface of A3 steel was observed with a scanning electron microscope.Results showed that as-synthesized dodecencylsuccinic acid monoethanol amide was able to effectively inhibit the corrosion of A3 steel in HC1 + H_2S solution.Particularly,under inhibitor concentration of75 mg/L,corrosive medium temperature of 50℃,stirring paddle speed of 90 r/min,and immersion time of 6 h in corrosive medium,the corrosion inhibition efficiency was as much as 94.37%.
引文
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[4]徐吉展,李孟,薛晗,等.多酰胺Gemini型缓蚀剂缓蚀性能研究[J].腐蚀科学与防护技术,2013,25(2):143~147.
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[2]Kamendulis L M,Klaunig J E.Species differences in the induction of hepatocellular DNA synthesis by diethanolamine[J].Toxicological Sciences,2005,87(2):328~336.
[3]周海,陈远霞,陈文纳,等.十二烯基丁二酸二乙醇酰胺的合成及其防锈性能研究[J].化工技术与开发,2008,37(2):10~16.
[4]徐吉展,李孟,薛晗,等.多酰胺Gemini型缓蚀剂缓蚀性能研究[J].腐蚀科学与防护技术,2013,25(2):143~147.
[5]张铸勇.精细有机合成单元反应(第2版)[M].上海:华东理工大学出版社,2003:255~256.
[6]张天胜.缓蚀剂[M].北京:化学工业出版社,2002:165~167.
[7]邓芹英,刘岚,邓慧敏.波谱分析教程[M].北京:科学出版社,2003:29~72.