J Chin Soc Corr Pro  2002, Vol. 22 Issue (3): 148-152     DOI:

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STUDY ON CORROSION AND INHIBITION MECHANISM IN H2S AQUEOUS SOLUTIONSⅥ.The Relationship between Molecular Structure of ImidazolineDerivatives and Inhibition Performance in H2S Solutions

Huaiyu Yang;Jiajian Chen;Chunan Cao

中科院金属所金属腐蚀与防护国家重点实验室

Huaiyu Yang; Jiajian Chen; Chunan Cao. STUDY ON CORROSION AND INHIBITION MECHANISM IN H2S AQUEOUS SOLUTIONSⅥ.The Relationship between Molecular Structure of ImidazolineDerivatives and Inhibition Performance in H2S Solutions. J Chin Soc Corr Pro, 2002, 22(3): 148-152 .

Abstract References Related Articles Recommended Metrics Download:  PDF(168KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The relationship between molecular structure of imi dazoline derivatives and inhibition performance was investigated by weight loss me thod，potentiodynamic polarization curve and electrochemical impedance spectrosc opy (EIS) in H2S solutions.Result show that the side chains，which occupies 1 or 2 sites on the central five membered ring and has hydrophobic or hydrophilic properties，and some active functional groups have an important effect on the in hibition performance of imidazoline derivatives.Compounds studied have the best in hibitive efficiency when the hydrophobic side chain contains either seven or sev enteen carbon atoms，and the best inhibitive efficiency when the hydrophilic sid e chain contains two aminoethylenes.The double bond in the hydrophobic side cha in and the thiourea group in the hydrophilic side chain can effectively enhance inhibitive performance，nor can the hydroxyl group in the hydrophobic chain.Alth ough the inhibitive performance of imidazoline derivates can be improved through changing the central imidazoline ring chemistry，they do not suit to use as in hibitor because of the poor solubility. Key words:  molecular structure      imidazoline      inhibition      H2S cor rosion       Received:  30 October 2000      ZTFLH:  TG174.42   Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors Huaiyu Yang Jiajian Chen Chunan Cao URL:  https://www.jcscp.org/EN/     OR     https://www.jcscp.org/EN/Y2002/V22/I3/148 [1]AramaklK ,VagiwaraM ,NishtharaH .Adsorptionandcorrosionin hibitioneffectofanionsplusanorganiccationonironin1MHClO4andHSABprinciple[J].J.Electrochem.Soc.,1987,134(8):1896-1901 [2]VostaJ ,EliasekJ,KnizekP .Aquantum-chemicalstudyofthecor rosioninhibitionofironbymeansofanilinederivativesinhydrochlo ricacid[J].Corrosion,1976,32(5):183-187 [3]YangHY ,ChenJJ ,CaoCN .StudyoncorrosionandinhibitionmechanisminH2SaqueoussolutionsⅤ.Theinhibitioncharacteris ticsofimidazolinederivativesinH2Ssolutions[J].J.ChineseSocietyforCorrosionandProtection,2001,21(6):321-327(杨怀玉,陈家坚,曹楚南,曹殿珍H2S水溶液中的腐蚀与缓蚀作用机理的研究ⅴ.咪唑啉衍生物在H2S溶液中的缓蚀作用特征[J].中国腐蚀与防护学报,2001,21(6):321-327) [4]YangHY ,ChenJJ ,CaoCN .StudyoncorrosionandinhibitionmechanisminH2SaqueoussolutionsⅠ.Corrosionbehaviorofcar bonsteelandgrowthofsulfidefilmonitinacidicsolutionscontain ingH2S[J].J .ChineseSocietyforCorrosionandProtection,2000,20(1):1-7(杨怀玉,陈家坚,曹楚南,曹殿珍.H2S水溶液中的腐蚀与缓蚀作用机理的研究Ⅰ.酸性H2S溶液中碳钢的腐蚀行为及硫化物膜的生长[J].中国腐蚀与防护学报,2000,20(1):1-7) [5]SuzukiK ,KounoT ,SatoE ,MurataT .Thestudyofinhibitorsforsourgasservice[J].Corrosion,1982,38(7):384-389 [6]NingSG ,ShiML ,LiuFL .Therelationshipofcorrosioninhibitionefficiencyonsteelinacidswithelectrondensityandtheenergyoffrontalorbitalofimidazolinederivatives[J].J.ChineseSocietyforCorrosionandProtection,1990,10(4):383-390(宁世光,石明理,刘奉岭.咪唑啉衍生物对钢在酸中的缓蚀作用与电子密度和前线轨道能量的关系[J].中国腐蚀与防护学报,1990,10(4):383-390) [1] ZHU Shuo, LI Guanghao, CHU Zhenhua, TANG Wan, JIANG Quantong, XU Jingxiang. 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