蛋氨酸衍生物的合成及其缓蚀性能研究
|
摘要
本文合成了一种新型蛋氨酸衍生物酸洗缓蚀剂,运用红外光谱及核磁共振氢谱对其结构进行了鉴定。采用失重法和电化学法研究了在0. 5mol·L~(-1)硫酸介质中其对碳钢试片的缓蚀性能,并通过吸附等温模型对缓蚀机理进行初步的探讨。结果表明,蛋氨酸衍生物的缓蚀效率约为90%,整体用量适中,是一种有望得到良好应用的绿色缓蚀剂。电化学分析表明,蛋氨酸衍生物为混合型缓蚀剂,其通过增大金属表面的电荷转移电阻而降低电化学腐蚀速率。
A novel methionine derivative pickling corrosion inhibitor was synthesized. Its structure was identified by IR and NMR. The corrosion inhibition performance of methionine derivative were studied by weight loss and electrochemical methods for A3 steel in 0. 5 mol·L~(-1) sulfuric acid medium,and the inhibition mechanism was discussed by isothermal adsorption model. The results showed that the corrosion efficiency of methionine derivative was about 90%,which indicated it had excellent inhibitory effect for A3 steel in H_2SO_4 medium. Polarization curves indicated the inhibitor acts as mixed-type inhibitor. Impedance testing showed that the corrosion rate is decreased by increasing the charge transfer resistance of metal surface.
A novel methionine derivative pickling corrosion inhibitor was synthesized. Its structure was identified by IR and NMR. The corrosion inhibition performance of methionine derivative were studied by weight loss and electrochemical methods for A3 steel in 0. 5 mol·L~(-1) sulfuric acid medium,and the inhibition mechanism was discussed by isothermal adsorption model. The results showed that the corrosion efficiency of methionine derivative was about 90%,which indicated it had excellent inhibitory effect for A3 steel in H_2SO_4 medium. Polarization curves indicated the inhibitor acts as mixed-type inhibitor. Impedance testing showed that the corrosion rate is decreased by increasing the charge transfer resistance of metal surface.
引文
[1]郭强强,田会娟,王丽红.表面技术,2016,45(7):46~50.
[2]何毅,杨冉冉,王雅洁等.化学通报,2016,79(3):248~253.
[3]文家新,何建新,刘云霞等.表面技术,2017,46(4):246~251.
[4]赵军平,高玉华,李海花等.应用化工,2018,47(9):1975~1980.
[5]S A Sievers,J Karanicolas,H W Chang et al.Nature,2011,475(7354):96~100.
[6]G L F Mendon9a,S N Costa,V N Freire et al.Corros.Sci.,2017,115(1):41~45.
[7]T Stimpfling,P Vialat,H Hintze-Bruening et al.Eur.J.Inorg.Chem.,2016,2016(13~14):2006~2016.
[8]Z Zhang,N Tian,W Zhang et al.Corros.Sci.,2016,111:675~689.
[9]D Thirumoolan,V A Katkar,G Gunasekaran et al.Prog.Org.Coat.,2014,77(8):1253~1263.
[10]G M A El-Hafez,W A Badawy.Electrochim.Acta,2013,108(10):860~866.
[11]E Oguzie,Y Li,F Wang.J.Colloid Interf.Sci.,2007,310(1):90~98.
[12]曹毅,芮玉兰,黄开宏.表面技术,2011,(5):13~17.
[13]宋霞,陈敏,孙露.化学试剂,2007,29(11):687~688.
[14]M S Lall,Y K Ramtohul,M N G James et al.J.Org.Chem.,2002,67(5):1536~1547.
[15]M S Morad.J.Appl.Electrochem.,2007,37:1191~1200.
[16]O Olivares,N V Likhanova,B Gómez et al.Appl.Surf.Sci.,2006,252(8):2894~2909.
[2]何毅,杨冉冉,王雅洁等.化学通报,2016,79(3):248~253.
[3]文家新,何建新,刘云霞等.表面技术,2017,46(4):246~251.
[4]赵军平,高玉华,李海花等.应用化工,2018,47(9):1975~1980.
[5]S A Sievers,J Karanicolas,H W Chang et al.Nature,2011,475(7354):96~100.
[6]G L F Mendon9a,S N Costa,V N Freire et al.Corros.Sci.,2017,115(1):41~45.
[7]T Stimpfling,P Vialat,H Hintze-Bruening et al.Eur.J.Inorg.Chem.,2016,2016(13~14):2006~2016.
[8]Z Zhang,N Tian,W Zhang et al.Corros.Sci.,2016,111:675~689.
[9]D Thirumoolan,V A Katkar,G Gunasekaran et al.Prog.Org.Coat.,2014,77(8):1253~1263.
[10]G M A El-Hafez,W A Badawy.Electrochim.Acta,2013,108(10):860~866.
[11]E Oguzie,Y Li,F Wang.J.Colloid Interf.Sci.,2007,310(1):90~98.
[12]曹毅,芮玉兰,黄开宏.表面技术,2011,(5):13~17.
[13]宋霞,陈敏,孙露.化学试剂,2007,29(11):687~688.
[14]M S Lall,Y K Ramtohul,M N G James et al.J.Org.Chem.,2002,67(5):1536~1547.
[15]M S Morad.J.Appl.Electrochem.,2007,37:1191~1200.
[16]O Olivares,N V Likhanova,B Gómez et al.Appl.Surf.Sci.,2006,252(8):2894~2909.