咪唑啉酰胺在HCl/NH_4Cl-H_2O和H_2S/NH_4HS-H_2O体系中对碳钢的缓蚀性能
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摘要
采用失重法、电化学测试法,并结合扫描电镜和原子力显微镜观察,研究了在50℃条件下,N-(2-辛基-2咪唑啉)三亚乙基四酰胺(咪唑啉酰胺)分别在HCl/NH_4Cl-H_2O和H2S/NH_4HS-H_2O体系中对碳钢的缓蚀性能。结果表明:N-(2-辛基-2咪唑啉)三亚乙基四酰胺加量为15mg/L时,缓蚀率接近90%,缓蚀效果明显;该缓蚀剂为抑制阳极型缓蚀剂,溶液中加入缓蚀剂后,碳钢试样形成较长的钝化区间,交流阻抗半径大,腐蚀电流明显减小。形貌观察显示N-(2-辛基-2咪唑啉)三亚乙基四酰胺能够在碳钢表面形成致密的保护膜。
Weight-loss method,electrochemical methods,scanning electron microscopy and atomic force microscopy were used to study the corrosion inhibition performance of N-(2-octyl-2imidazoline)triethylenetetramine amide for carbon steel in HCl/NH_4Cl-H_2O and H_2S/NH_4HS-H_2O solution at 50 ℃.The results showed that the inhibition rate was close to 90% when 15 mg·L-1 corrosion inhibiter was added.The corrosion inhibitor is an anodic type corrosion inhibitor.After adding the inhibitor,long passivation range for the steel was formed,AC impedance radius became bigger,corrosion current decreased obviously.Microscopy result demonstrated that N-(2-octyl-2imidazoline)triethylenetetramine amide could form a compact film on the surface of the carbon steel specimen to protect it from corrosion.
Weight-loss method,electrochemical methods,scanning electron microscopy and atomic force microscopy were used to study the corrosion inhibition performance of N-(2-octyl-2imidazoline)triethylenetetramine amide for carbon steel in HCl/NH_4Cl-H_2O and H_2S/NH_4HS-H_2O solution at 50 ℃.The results showed that the inhibition rate was close to 90% when 15 mg·L-1 corrosion inhibiter was added.The corrosion inhibitor is an anodic type corrosion inhibitor.After adding the inhibitor,long passivation range for the steel was formed,AC impedance radius became bigger,corrosion current decreased obviously.Microscopy result demonstrated that N-(2-octyl-2imidazoline)triethylenetetramine amide could form a compact film on the surface of the carbon steel specimen to protect it from corrosion.
引文
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[26]宋伟伟,张静,杜敏.新型不对称双季铵盐缓蚀剂在HCl中对Q235钢的缓蚀行为[J].化学学报,2011,69(16):1851-1857.
[27]杨怀玉,陈家坚,曹楚南,等.H2S水溶液中的腐蚀与缓蚀用机理的研究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.
[28]YANG L J,BASHIR R.Electrical/electrochemical impedance for rapid detection of foodborne pathogenic bacteria[J].Biotechnol Adv,2008,26(2):135.
[29]曹楚南,张鉴清.电化学阻抗谱导论[M].北京:科学出版社,2002:173.
[30]曹楚南.腐蚀电化学[M].北京:化学工业出版社,1994:134.
[31]GAO J C.Corrosion inhibition ofα,β-unsaturated carbonyl compounds on steel in acid medium[J].Petroleum Science,2009(6):201-207.
[32]张军,于维钊,燕友果,等.咪唑啉缓蚀剂在Fe(001)表面吸附行为的分子动力学模拟[J].物理化学学报,2010,26(5):1385-1390.
[2]赵敏,康强利,马红杰,等.炼油厂常减压蒸馏装置腐蚀防护现状[J].腐蚀科学与防护技术,2011,23(5):430-432.
[3]臧红武.常压塔的腐蚀与防腐[J].石油工程建设,2000(1):22-24.
[4]MORRIS D R,SAMPALEAUN L P,VEYSEY D N.The corrosion of steel by aqueous solutions of hydrogen sulfide[J].J Electrochem Soc,1980,127(6):1228.
[5]黄本生,尹文峰,王小红,等.常减压装置常用钢材在高温原油馏分中的腐蚀研究[J].中国腐蚀与防护学报,2013,33(5):377-382.
[6]于晓鹏,王登恕.常压塔腐蚀与防护[J].石油化工腐蚀与防护,2007,24(5):23-25.
[7]赵训跃,陈相.常压塔顶空气冷却器腐蚀失效分析[J].石油化工腐蚀与防护,2009,26(2):19-22,26.
[8]何永红,巩学梅.常压塔塔顶304不锈钢馏出线开裂分析[J].宁波工程学报,2009,21(4):64-67.
[9]叶国庆.常压塔塔顶系统设备腐蚀分析及对策[J].石油化工设备,2007,36(3):90-92.
[10]许文虎,贾军艳,黄平.石化常减压装置低温部位防腐蚀措施[J].腐蚀与防护,2012,33(1):85-87,92.
[11]刘香兰.常压蒸馏塔顶系统的腐蚀与防护[J].腐蚀科学与防护技术,2011,23(3):281-283.
[12]程光旭,马贞钦,胡海军,等.常减压装置塔顶低温系统露点腐蚀及铵盐沉积研究[J].石油化工设备,2014,43(1):1-8.
[13]张天胜.缓蚀剂[M].北京:化学工业出版社,2002:421-436.
[14]杨伙成.7019缓蚀剂在炼化公司的应用[J].石油化工腐蚀与防护,1998,15(2):42-43,57.
[15]艾中秋.加氢分馏塔顶缓蚀剂的筛选[J].石油化工腐蚀与防护,2001,18(1):40,56.
[16]CRUZ J,MARTINEZ R,GENESCA J,et al.Experimental and theoretical study of 1-(2-ethylamino)-2-methylimidazoline as an inhibitor of carbon steel corrosion in acid media[J].Journal of Electroanalytical Chemistry,2004,566(1):111-121.
[17]马文军,范峥,李稳宏,等.咪唑啉类缓蚀剂性能的评价及其机理研究[J].化学工程,2014,42(2):9-12.
[18]张光华,王腾飞,孙卫玲,等.硫脲基烷基咪唑啉类缓蚀剂的制备、缓蚀性能及其机理[J].材料保护,2011,44(2):21-23.
[19]ACHOURI M E,INFANTE M R,IZQUIERDO F,et al.Synthesis of some cationic gemini surfactants and their inhibitive effect on iron corrosion in hydrochloric acid medium[J].Corrosion Science,2001(43):19-35.
[20]ACHOURI M E,KERTIT S,GOUTTAYA H M,et al.Corrosion inhibition of iron in 1M HCl by some gemini surfactants in the series of alkanediyl-α,ω-bis-(dimethyl tetradecyl ammonium bromide)[J].Progress in Organic Coatings,2001(43):267-273.
[21]QIU L G,XIE A J,SHEN Y H.Understanding the effect of the spacer length on adsorption of gemini surfactants onto steel surface in acid medium[J].Applied Surface Science,2005(246):1-5.
[22]HEGAZY M A.A novel schiff base-based cationic gemini surfactants:synthesis and effect on corrosion inhibition of carbon steel in hydrochloric acid solution[J].Corrosion Science,2009(51):2610.
[23]WANG X M,YANG H Y,WANG F H.A cationic gemini-surfactant as effective inhibitor for mild steel in HCl solution[J].Corrosion Science,2010(52):1268.
[24]ASEFI D,ARAMI M,MAHMOODI N M.Electrochemical effect of cationic gemini surfactant and halide salts on corrosion inhibition of low carbon steel in acid medium[J].Corrosion Science,2010(52):794-800.
[25]刘公召,曲纪惠.影响水溶性咪唑啉酰胺合成及性能的因素的研究[J].化学世界,2014(6):345-347,351.
[26]宋伟伟,张静,杜敏.新型不对称双季铵盐缓蚀剂在HCl中对Q235钢的缓蚀行为[J].化学学报,2011,69(16):1851-1857.
[27]杨怀玉,陈家坚,曹楚南,等.H2S水溶液中的腐蚀与缓蚀用机理的研究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.
[28]YANG L J,BASHIR R.Electrical/electrochemical impedance for rapid detection of foodborne pathogenic bacteria[J].Biotechnol Adv,2008,26(2):135.
[29]曹楚南,张鉴清.电化学阻抗谱导论[M].北京:科学出版社,2002:173.
[30]曹楚南.腐蚀电化学[M].北京:化学工业出版社,1994:134.
[31]GAO J C.Corrosion inhibition ofα,β-unsaturated carbonyl compounds on steel in acid medium[J].Petroleum Science,2009(6):201-207.
[32]张军,于维钊,燕友果,等.咪唑啉缓蚀剂在Fe(001)表面吸附行为的分子动力学模拟[J].物理化学学报,2010,26(5):1385-1390.