一种含二硫代氨基甲酸基团的硫酸缓蚀剂及其对铜的缓蚀作用
A Sulphuric Solution Inhibitor Containing Dithiocarbamate and Its Anti-corrosion Effect on Copper
摘 要
合成了一种含二硫代氨基甲酸基团的硫酸缓蚀剂——三乙烯四胺基双(二硫代甲酸钠)(简称DTCT).采用红外、紫外光谱及元素分析手段对DTCT的结构进行了表征.交流阻抗测试结果表明,在0.5 mol/L的硫酸介质中,随着DTCT浓度的增加,黄铜电极的阻抗逐渐增大,在75 mg/L时达到最大,之后随着浓度的进一步增加,电极阻抗反而减小;腐蚀失重试验结果表明DTCT在75 mg/L时缓蚀效率可达到65%,在0.5 mol/L硫酸介质中对黄铜具有较好的缓蚀效果.
二硫代氨基甲酸(DTC)
缓蚀剂
黄铜管
triethylenetetramine(TETA)
dithiocarbamate(DTC)
corrosion inhibitor
brass tube
Abstract
A copper corrosion inhibitor of triethylenetetramine-bisdithiocarbamate sodion (DTCT) used in sulphuric acid was synthesized and its structure was characterized by FTIR and UV spectroscopy.The EIS results indicated that the impedance values of brass electrodes initially increased with the DTCT concentration,reached a maximum at 75 mg/L.Then the impedance values decreased a little with further increase of DTCT concentration.The weight-loss results showed that DTCT had a relatively good inhibition efficiency of 65% in 0.5 mol/L H2SO4 at a concentration of 75 mg/L.
中图分类号 TG174.42
所属栏目 试验研究
基金项目 国家自然科学基金项目(No:20577034);上海市重点学科建设项目(No:P1304)资助
收稿日期 2008/3/26
修改稿日期 2008/4/13
网络出版日期
作者单位点击查看
备注廖强强,副教授.
引用该论文: LIAO Qiang-qiang,YUE Zhong-wen,SHEN Xi,YU Zhen-yin,LI Yi-jiu,ZHOU Qi. A Sulphuric Solution Inhibitor Containing Dithiocarbamate and Its Anti-corrosion Effect on Copper[J]. Corrosion & Protection, 2010, 31(2): 118～120
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参考文献
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【6】郑怀礼,陈春艳,岳虎秀,等.重金属离子捕集剂DTC(EDA)的合成及其应用[J].环境化学,2006,25(6):765-767.
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【2】Fan H B,Fu C Y,Wang H L,et al.Inhibition of corrosion of mild steel by sodium n,n-diethyl dithiocarbamate in hydrochloric acid solution[J].British Corrosion Journal,2002,37(2):122-125.
【3】葛际江,宋昭峥.DTC在石油开采中的应用[J].油田化学,2000,17(1):90-92.
【4】尹汉东,马春林,张如芬.三苄基锡二硫代氨基甲酸酯的合成[J].应用化学,1998,15(2):76-78.
【5】郭胜利,殷元骐.双(1-氮杂环基)二硫代氨基甲酸铜(Ⅱ)、锌(Ⅱ)配合物的合成及结构表征[J].四川大学学报(自然科学版),1999,36(3):562-565.
【6】郑怀礼,陈春艳,岳虎秀,等.重金属离子捕集剂DTC(EDA)的合成及其应用[J].环境化学,2006,25(6):765-767.
【7】Khaled K F,Hackerman N.Ortho-substituted anilines to inhibit copper corrosion in aerated 0.5 M hydrochloric acid[J].Electrochim Acta,2003,49(3):485-495.
【8】Benedetti A V,Sumodjo P T A,Nobe k,et al.Electrochemical studies of copper,copper-aluminium and copper-aluminium-silver alloys: Impedance results in 0.5 M NaCl[J].Electrochimica Acta,1995,40(16):2657-2668.
【9】范洪波,胡勇有,郑家燊.硫酸介质中二硫代氨基甲酸钠对碳钢的缓蚀机理[J].华南理工大学学报(自然科学版),2005,33(6):55-58.
【10】Quraishi M A,Rawat J,Ajmal M.Dithiobiurets: a novel class of acid corrosion inhibitors for mild steel[J].Journal of Applied Electrochemistry,2000,30:745-751.
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