从天然植物荠菜中提取绿色缓蚀剂的研究
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- 英文论文题名：Study on the Extracts of Capsella Bursa-pastoris as an Eco-friendly Corrosion Inhibitor
- 论文作者：胡琴 ; 邱于兵 ; 张国安 ; 陈振宇 ; 郭兴蓬
- 英文论文作者：HU Qin ; QIU Yu-bing ; ZHANG Guo-an ; CHEN Zhen-yu ; GUO Xing-peng ; Hubei Key Laboratory of Materials Chemistry and Service Failure ; School of Chemistry and Chemical Engineering ; Huazhong University of Science and Technology
- 年：2014
- 作者机构：华中科技大学化学与化工学院材料化学与服役失效湖北省重点实验室;
- 论文关键词：荠菜提取液 ; 盐酸 ; 碳钢 ; 缓蚀
- 英文论文关键词：capsella bursa-pastoris extract ; hydrochloric acid solution ; mild steel ; corrosion inhibition
- 会议召开时间：2014-07-28
- 会议录名称：第十八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：第十八届全国缓蚀剂学术讨论及应用技术经验交流会
- 会议地点：中国四川成都
- 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：4
- 文件大小：264k
- 原文格式：O
- 会议级别：全国
摘要
选用植物荠菜为研究对象,采用正交试验设计得到荠菜提取液的最佳提取条件。电化学阻抗、动电位扫描等方法来分析荠菜提取液对Q235在1 mol/L HCl介质中的缓蚀作用及温度、浓度的影响。结果显示,荠菜提取液添加在1 mol/LHCl溶液中对Q235有较好的缓蚀效果,缓蚀率随缓蚀剂浓度的增加而增大。荠菜提取液为混合抑制型缓蚀剂,且在钢表面的吸附符合Langmuir吸附等温式;Van't Hoff方程和Arrhenius公式讨论电极反应的热力学、动力学参数和缓蚀作用的机理。天然荠菜提取液制取方便、环保无毒、价廉易得,具有很好的应用前景。
The extracts of capsella bursa-pastoris was obtained by orthogonal design and the corrosion inhibition of Q235 carbon steels in 1 mol/L HC1 solutions by capsella bursa-pastoris extract(CBE) was studied using electrochemical impedance spectroscope and potentiodynamic polarization techniques.The results obtained indicate that the CBE could serve as an effective inhibitor of the corrosion of Q235 carbon steels in hydrochloric acid media.Inhibition efficiency was found to increase with increasing concentration of CBE.The data also suggest that the CBE functioned as an inhibitor via a mixed-inhibitor mechanism and the process of inhibition attributed to physisorption,which follows Langmuir adsorption isotherm,and the associated thermodynamic and kinetic parameters have been determined to discuss the mechanism.
The extracts of capsella bursa-pastoris was obtained by orthogonal design and the corrosion inhibition of Q235 carbon steels in 1 mol/L HC1 solutions by capsella bursa-pastoris extract(CBE) was studied using electrochemical impedance spectroscope and potentiodynamic polarization techniques.The results obtained indicate that the CBE could serve as an effective inhibitor of the corrosion of Q235 carbon steels in hydrochloric acid media.Inhibition efficiency was found to increase with increasing concentration of CBE.The data also suggest that the CBE functioned as an inhibitor via a mixed-inhibitor mechanism and the process of inhibition attributed to physisorption,which follows Langmuir adsorption isotherm,and the associated thermodynamic and kinetic parameters have been determined to discuss the mechanism.
引文
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[10]LI X H,DENG S D,FU H,et al.Adsorption and inhibition effect of 6-benzylaminopurine on cold rolled steel in 1.01M HC1[J].Electrochim Acta,2009,54(16):4089-4098.
[11]张天胜.缓蚀剂[M].北京:化学工业出版社,2002:1-145.
[2]徐伟.国产荠菜的化学成分研究[J].沈阳药科大学学报.2007(2):25-28.
[3]LIU D,LIN Y H,DING Y G.et al.Corrosion inhibition of carbon steel in hydrochloric acid solution by rice bran extracts[J].Anti-Corrosion Methods and Materials,2011,58(4):205-210.
[4]FARES M M,MAAYTA A K,AL-MUSTAFA J A.Corrosion inhibition of iota-carrageenan natural polymer on aluminum in presence of zwitterion mediator in HCl media[J].Corros Sci,2012,65:223-230.
[5]LI X H,DENG S D.Inhibition effect of Dendrocalamus brandisii leaves extract on aluminum in HC1,H3PC4 solutions[J].Corros Sci,2012,65:299-308.
[6]YURT A,ULUTAS S,DAL H.Electrochemical and theoretical investigation on the corrosion of aluminium in acidic solution containing some Schiff bases[J].Applied Surface Science,2006,253(2):919-925.
[7]ABIOLA O K,JAMES A O.The effects of Aloe vera extract on corrosion and kinetics of corrosion process of zinc in HC1 solution[J].Corros Sci,2010,52:661-664.
[8]BENTISS F,TRAISNEL M,LAGRENEE M.Thermodynamic characterization of metal dissolution and inhibitior adsorption processes in mild steel/2,5-bis(nthienyl)-l,3,4-thiadiazoles/hydrochloric acid system[J].Corros Sci,2005,47:2915-2931.
[9]CLARA G,JULIANA VINHOLES,LUIS R SILVA Chemical composition and biological screening of capsella bursa-pastoris[J].Brazilian Journal of Pharmacognosy 2001,21(4);635-644.
[10]LI X H,DENG S D,FU H,et al.Adsorption and inhibition effect of 6-benzylaminopurine on cold rolled steel in 1.01M HC1[J].Electrochim Acta,2009,54(16):4089-4098.
[11]张天胜.缓蚀剂[M].北京:化学工业出版社,2002:1-145.