2-吡啶甲醛缩4-苯基氨基硫脲席夫碱在盐酸溶液中对Q235钢的缓蚀作用
Inhibition Performance of 2-Pyridinecarboxaldehyde-4-Phenylthiosemicarbazide for Q235 Steel in HCl Solution
摘 要
合成了一种吡啶席夫碱衍生物，2-吡啶甲醛缩4-苯基氨基硫脲席夫碱（PCPTC），并采用失重法、电化学阻抗谱法和极化曲线法研究了PCPTC对Q235钢在1 mol/L HCl溶液的缓蚀作用。结果表明:PCPTC对Q235钢在1 mol/L HCl溶液中具有优良的缓蚀效果，是一种混合型缓蚀剂;当缓蚀剂浓度达到0.5 mmol/L时，缓蚀率达到93.6%;PCPTC在Q235钢表面的吸附符合Langmuir吸附等温式;扫描电镜(SEM)观察表明,PCPTC可以有效保护Q235钢。
Q235钢
缓蚀性能
电化学
吸附等温式
schiff base
Q235 steel
inhibition performance
electrochemistry
adsorption isotherm
Abstract
A Schiff base inhibitor named 2-Pyridinecarboxaldehyde-4-Phenylthiosemicarbazide (PCPTC) was synthesized and its inhibition performance for Q235 steel in 1 mol/L HCl solution was estimated by weight loss method, electrochemical impedance spectroscopy and polarization curve. The results revealed that PCPTC had good inhibition effect for Q235 steel in HCl solution and acted as a mixed-type inhibitor. When the concentration was 0.5 mmol/L, the inhibition efficiency reached up to 93.6%. The adsorption of PCPTC on Q235 steel surface obeyed Langmuir adsorption isotherm. The SEM observation showed that PCPTC could protect the metal surface.
中图分类号 TG174.42 DOI 10.11973/fsyfh-201611004
所属栏目 试验研究
基金项目 国家水体污染控制与治理科技重大专项(2013ZX07210-001); 2015年江苏省大学生创新创业训练计划重点项目(201510291010Z)
收稿日期 2015/8/20
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备注杨文忠,博士生导师,
引用该论文: NING Wen-bo,MENG Yue,XU Bin,YANG Wen-zhong,JI Yan. Inhibition Performance of 2-Pyridinecarboxaldehyde-4-Phenylthiosemicarbazide for Q235 Steel in HCl Solution[J]. Corrosion & Protection, 2016, 37(11): 876
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参考文献
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【2】XU B,LIU Y,YIN X S,et al. Experimental and theoretical study of corrosion inhibition of 3-pyridinecarbozalde thiosemicarbazone for mild steel in hydrochloric acid[J]. Corrosion Science,2013,74:206-213.
【3】XU B,YANG W Z,LIU Y,et al. Experimental and theoretical evaluation of two pyridinecarboxaldehyde thiosemicarbazone compounds as corrosion inhibitors for mild steel in hydrochloric acid solution[J]. Corrosion Science,2014,78:260-268.
【4】BAYOL E,GVRTEN T,GVRTEN A A,et al. Interactions of some schif f base compounds with mild steel surface in hydrochloric acid solution[J]. Materials Chemistry and Physics,2008,112:624-630.
【5】李俊莉，白方林，卢永斌，等. 新型希夫碱酸化缓蚀剂的合成及性能评价[J]. 腐蚀与防护，2012，33（9）：787-791.
【6】徐斌，刘瑛，尹晓爽，等. 2-吡啶甲醛缩氨基硫脲席夫碱在HCl溶液中对Q235钢的缓蚀作用[J]. 腐蚀与防护，2013，34（7）：569-572.
【7】张胜涛，陶志华，李伟华，等. 新型三氮唑化合物在1 mol/L HCl中对Q235钢的缓蚀性能[J]. 中国腐蚀与防护学报，2009，29（6）：487-492.
【8】杨月. 氨基硫脲类Schiff碱及其金属配合物的合成及晶体结构[D]. 福建：华侨大学，2013.
【9】李向红，邓书端，付惠，等. 烯丙基硫脲对硫酸溶液中钢的吸附与缓蚀作用机理[J]. 腐蚀与防护，2011，32（12）：958-961.
【10】白永玲，李伟华. 呋喃甲醛[5-（对甲基苯基）-1,3,4-噻二唑-2-巯基]-乙酰腙在硫酸溶液中对碳钢的缓蚀作用[J]. 腐蚀与防护，2014，35（2）：150-157.
【11】李林峰，诸林，刘红，等. 一种苯胺类席夫碱对N80钢在盐酸介质中的缓蚀性能[J]. 腐蚀与防护，2015，36（2）：157-160.
【12】XU B,JI Y,ZHANG X Q,et al. Experimental and theoretical studies on the corrosion inhibition performance of 4-amino-N,N di-(2-pyridylmethyl)-aniline on mild steel in hydrochloric acid[J]. RSC Advance,2015(5):56049-56059.
【13】ZHANG K G,XU B,YANG W Z,et al. Halogen-substituted imidazoline derivatives as corrosion inhibitors for mild steel in hydrochloric acid solution[J]. Corrosion Science,2015,90:284-295.
【14】MATAD P B,MOKSHANATHA P B,HEBBAR N,et al. Ketosulfone drug as a green corrosion inhibitor for mild steel in acidic medium[J]. Industrial & Engineering Chemistry Research,2014,53:8436-8444.
【15】ZHENG X W,ZHANG S T,LI W P,et al. Experimental and theoretical studies of two imidazolium-based ionic liquids as inhibitors for mild steel in sulfuric acid solution[J]. Corrosion Science,2015,95:168-179.
【16】潘原，战风涛，张森田，等. 曼尼希碱1-苯基-3-二乙氨基-1-丙酮的合成、性能及其缓蚀机理[J]. 腐蚀与防护，2014，35（7）：715-720.
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【19】TANG Y M,YANG X Y,YANG W Z,et al. A preliminary investigation of corrosion inhibition of mild steel in 0.5 M H2SO4 by 2-amino-5-(n-pyridyl)-1,3,4-thiadiazole:Polarization,EIS and molecular dynamics simulations[J]. Corrosion Science,2010,52:1801-1808.
【20】CHIDIEBERE M A,OGUZIE E E,LIU L,et al. Corrosion inhibition of Q235 mild steel in 0.5 M H2SO4 solution by phytic acid and synergistic iodide additives[J]. Industrial & Engineering Chemistry Research,2014,53:7670-7679.
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