新型抗H_2S/CO_2腐蚀缓蚀剂的合成与性能
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- 英文论文题名：Synthesis and Performance of New Imidazoline Corrosion Inhibotor in H_2S/CO_2 Environment
- 论文作者：胡松青 ; 胡建春 ; 郭文跃
- 英文论文作者：HU Song-qing ; HU Jian-chun ; GUO Wen-yue ; China University of Petroleum
- 年：2010
- 作者机构：中国石油大学物理科学与技术学院;
- 论文关键词：缓蚀剂 ; 失重法 ; 电化学测试 ; 量子化学
- 英文论文关键词：corrosion inhibitor ; weight loss measurement ; electrochemical measurement ; quantum chemical
- 会议召开时间：2010-07-28
- 会议录名称：第十六届全国缓蚀剂学术讨论会论文集
- 语种：中文
- 分类号：TG174.42
- 学会代码：ZGHA
- 会议名称：第十六届全国缓蚀剂学术讨论及应用技术经验交流会
- 会议地点：中国上海
- 主办单位：中国腐蚀与防护学会缓蚀剂专业委员会
- 学会名称：中国腐蚀与防护学会缓蚀剂专业委员会
- 页数：5
- 文件大小：678k
- 原文格式：O
- 会议级别：全国
摘要
在合成1-(2-氨乙基)-2-十五烷基咪唑啉(A)的基础上,利用硫代氨基脲对其进行改性,制备了一种1-(2-氨基-硫脲乙基)-2-十五烷基咪唑啉(B)新型缓蚀剂。通过失重法和电化学方法研究了A、B两种缓蚀剂在H_2S、CO_2共存条件下对Q235钢的缓蚀性能,探讨了其在Q235钢表面的吸附行为。结果显示,改性后的缓蚀剂B具有更优的抗H_2S、CO_2腐蚀的缓蚀性能,最高缓蚀效率在92%以上。两者在Q235钢表面均是单分子层吸附,属于以化学吸附为主的混合吸附。最后采用量子化学方法对两种缓蚀剂的缓蚀机理进行了分析。
A new imidazoline compound,l-(2-amido-thioureaethyl)-2-pentadecyl-imidazoline(B) was synthesized by modifying l-(2-aminoethyl)-2-pentadecyl-imidazoline(A) using thiosemicarbazide.The corrosion inhibition performances and adsorption behaviors of A and B on Q235 steel were investigated in H_2S/CO_2 coexistence solution using weight loss measurements and electrochemical methods.The results indicated that the modified compound B had better corrosion inhibition performance in H_2S and CO_2 corrosion enviroment,the highest inhibition efficiency was more than 92%.And the adsorptions of two compounds on Q235 steel satisfied the Langmuir isotherm equation,and belong to mix-type adsorption which mainly dominated by chemisorptions.The inhibition mechanism of two compounds had been investigated by density functional theory(DFT) of quantum chemical calculations.
A new imidazoline compound,l-(2-amido-thioureaethyl)-2-pentadecyl-imidazoline(B) was synthesized by modifying l-(2-aminoethyl)-2-pentadecyl-imidazoline(A) using thiosemicarbazide.The corrosion inhibition performances and adsorption behaviors of A and B on Q235 steel were investigated in H_2S/CO_2 coexistence solution using weight loss measurements and electrochemical methods.The results indicated that the modified compound B had better corrosion inhibition performance in H_2S and CO_2 corrosion enviroment,the highest inhibition efficiency was more than 92%.And the adsorptions of two compounds on Q235 steel satisfied the Langmuir isotherm equation,and belong to mix-type adsorption which mainly dominated by chemisorptions.The inhibition mechanism of two compounds had been investigated by density functional theory(DFT) of quantum chemical calculations.
引文
[1]胡松青,胡建春,石鑫,等.咪唑啉衍生物缓蚀剂的定量构效关系及分子设计[J].物理化学学报,2009,25(12):2524-2530.
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[4]杨怀玉,陈家坚,曹楚南.H_2S溶液中的腐蚀与缓蚀作用机理研究[J].中国腐蚀与防护学报,2001,21(6):321-327.
[5]Bereket G,Hur E.Quantum chemical studies on some imidazole derivatives as corrosion inhibitors for iron in acidic medium[J].J.Molecular Structure(Theochem),2002,578:79-88.
[6]LI Yan,ZHAO Peng,LIANG Qiang,et al.Berberineas a natural source inhibitor for mild steel in 1 M H_2 SO_4[J].Applied Surface Science,2005,252(5):1245-1253.
[7]陶志华,李伟华,侯保荣,等.新型杂环化合物在0.5mol/L H_2SO_4中对Q235钢的缓蚀性能[J].腐蚀与防护,2009,30(6):364-368.
[8]Bouklah M,Hammouti B,LagreneM,et al.Thermodynamic properties of 2,5-bis(4-methoxyphenyl)-1,3,4-oxadiazole as a corrosion inhibitor for mild steel in normal sulfuric acid medium[J].Corrosion Science,2006,48:2831-2842.
[9]张士国,杨频.用量子化学密度泛函理论研究环状含氮化合物分子结构与缓蚀性能的关系[J].中国腐蚀与防护学报,2004,24(4):240-244.
[10]刘瑕,郑玉贵.亲水基团对咪唑啉型缓蚀剂缓蚀性能的影响[C]//第八届中国青年腐蚀与防护研讨会论文集,2007.
[11]Pearson R G.Absolute electronegativity and hardness:application to inorganic chemistry[J].Inorganic Chemistry,1988,27:734.
[2]张静,杜敏,于会华,等.分子结构对咪唑啉缓蚀剂膜在Q235钢表面生长和衰减规律的影响[J].物理化学学报,2009,25(3):525-231.
[3]胡建春,胡松青,石鑫,等.CO_2分压对碳钢腐蚀的影响及缓蚀性能研究[J].青岛大学学报(工程技术版),2009,24(2):90 94.
[4]杨怀玉,陈家坚,曹楚南.H_2S溶液中的腐蚀与缓蚀作用机理研究[J].中国腐蚀与防护学报,2001,21(6):321-327.
[5]Bereket G,Hur E.Quantum chemical studies on some imidazole derivatives as corrosion inhibitors for iron in acidic medium[J].J.Molecular Structure(Theochem),2002,578:79-88.
[6]LI Yan,ZHAO Peng,LIANG Qiang,et al.Berberineas a natural source inhibitor for mild steel in 1 M H_2 SO_4[J].Applied Surface Science,2005,252(5):1245-1253.
[7]陶志华,李伟华,侯保荣,等.新型杂环化合物在0.5mol/L H_2SO_4中对Q235钢的缓蚀性能[J].腐蚀与防护,2009,30(6):364-368.
[8]Bouklah M,Hammouti B,LagreneM,et al.Thermodynamic properties of 2,5-bis(4-methoxyphenyl)-1,3,4-oxadiazole as a corrosion inhibitor for mild steel in normal sulfuric acid medium[J].Corrosion Science,2006,48:2831-2842.
[9]张士国,杨频.用量子化学密度泛函理论研究环状含氮化合物分子结构与缓蚀性能的关系[J].中国腐蚀与防护学报,2004,24(4):240-244.
[10]刘瑕,郑玉贵.亲水基团对咪唑啉型缓蚀剂缓蚀性能的影响[C]//第八届中国青年腐蚀与防护研讨会论文集,2007.
[11]Pearson R G.Absolute electronegativity and hardness:application to inorganic chemistry[J].Inorganic Chemistry,1988,27:734.