含不同氮杂环双季铵盐的合成及缓蚀性能测定
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摘要
利用季铵化反应,以1,6二溴己烷分别与吡啶、α-甲基吡啶和喹啉反应制备并表征了三种含不同氮杂环的双季铵盐:溴化1,6-二吡啶己烷(BPHD)、溴化1,6-二(α-甲基吡啶)己烷(BMHD)和溴化1,6-二喹啉己烷(BQHD)。采用电化学测试、静态失重实验等方法,研究了三种双季铵盐在15%盐酸溶液中对N80钢的缓蚀效果。失重实验表明三种双季铵盐在测试体系中均能起到明显的防腐蚀作用。其中BQHD的效果最佳,浓度为1.3×10~(-2)mol·L~(-1)时,在15%HCl、25℃下对N80钢的缓蚀率达92.7%。电化学测试表明,三种化合物都为混合型缓蚀剂,且在N80钢表面的吸附符合Langmuir吸附模型。
Three diquaternary ammonium salts containing different nitrogen heterocyclic ring of 1,6-bis(pyridinium)hexane dibromide(BPHD)1,6-bis(α-methylpyridinium)hexane dibromide(BMHD)and 1,6-bis(quinoline)hexane dibromide(BQHD)were prepared and characterized by quaternization of 1,6-dibromohexane with pyridine,α-methylpyridine and quinolone.The inhibition effect of three diquaternary ammonium salts on N80 steel in 15%hydrochloric acid solutions had been investigated using electrochemical measurement,weight loss test.The results of weight loss test found that these compounds had remarkable inhibition efficiency for the tested system.BQHD had the best efficiency.In 15%HCl at 25℃,the inhibition efficiency of BQHD could reach up to 92.7%at the concentration of 1.3×10~(-2)M.Electrochemical measurement showed that the studied compounds acted as mixed type corrosion inhibitor.The adsorption of diquaternary ammonium salts on the surface of N80 steel followed Langmuir adsorption isotherm.
Three diquaternary ammonium salts containing different nitrogen heterocyclic ring of 1,6-bis(pyridinium)hexane dibromide(BPHD)1,6-bis(α-methylpyridinium)hexane dibromide(BMHD)and 1,6-bis(quinoline)hexane dibromide(BQHD)were prepared and characterized by quaternization of 1,6-dibromohexane with pyridine,α-methylpyridine and quinolone.The inhibition effect of three diquaternary ammonium salts on N80 steel in 15%hydrochloric acid solutions had been investigated using electrochemical measurement,weight loss test.The results of weight loss test found that these compounds had remarkable inhibition efficiency for the tested system.BQHD had the best efficiency.In 15%HCl at 25℃,the inhibition efficiency of BQHD could reach up to 92.7%at the concentration of 1.3×10~(-2)M.Electrochemical measurement showed that the studied compounds acted as mixed type corrosion inhibitor.The adsorption of diquaternary ammonium salts on the surface of N80 steel followed Langmuir adsorption isotherm.
引文
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[2]Li X H,Deng S D,Fu H,et al.Adsorption and inhibition effect of 6-benzylaminopurine on cold rolled steel in 1.0 M HCl[J].Electrochim Acta,2009,54:4089-4098.
[3]卢燕,赖川,苏秀兰,等.HCl溶液中1,2-二(苯并咪唑-2-硫基)乙烷对碳钢的缓蚀行为研究[J].化学研究与应用,2017,29(04):479-486.
[4]刘琳,彭丹,张艳萍,等.硫、氮杂环类衍生物对铜缓蚀性能的研究[J].化学研究与应用,2016,28(02):234-238.
[5]邱海燕,李建波.酸化缓蚀刑的发展现状及展望[J].腐蚀科学与防护技术,2005,17(4):255-258.
[6]王英,曹祖宾,孙微微,等.缓蚀剂的分类和发展方向[J].全面腐蚀控制,2009(2):24-26.
[7]宋蔚,田禾,张津红.缓蚀剂的成膜机理分析[J].天津理工学院学报,2004,20(4):67-70.
[8].Negm N A,Ghuiba F M,Tawfik S M.Novel isoxazolium cationic Schiff base compounds as corrosion inhibitors for carbon steel in hydrochloric acid[J].Corros Sci,2011,53:3566-3575.
[9]Noor E A.The inhibition of mild steel corrosion in phosphoric acid solutions by some N-heterocyclic compounds in the salt form[J].Corros Sci,2005,47:33-55.
[10]宋伟伟.新型不对称双季铵盐缓蚀剂的合成及缓蚀性能[D].中国海洋大学,2011.6.
[11]Xue J Q,Ma X N,Yu L H,et al.Development of a novel acidification corrosion inhibitor for P110 steel at high temperature[J].Sci Advan Mater,2012,4:61-67.
[12]高统海,战风涛,杨震,等.双缩乙二胺Schiff碱的合成及其酸化缓蚀性能[J].腐蚀与防护,2017,38(2):101-106.