柠檬酸中锌防蚀剂（1,3-Dioxolan-2-ylmethyl）三苯基溴化磷和碘离子的协同效应研究

doi:10.13208/j.electrochem.151222

电化学（中英文） ›› 2017, Vol. 23 ›› Issue (4): 441-455. doi: 10.13208/j.electrochem.151222

柠檬酸中锌防蚀剂（1,3-Dioxolan-2-ylmethyl）三苯基溴化磷和碘离子的协同效应研究

M. Saadawy

埃及亚历山大大学理学院化学系，亚历山大 21321

收稿日期:2015-12-22 修回日期:2016-03-10 出版日期:2017-08-25 发布日期:2016-04-14
通讯作者: M. Saadawy E-mail:marwan.saadawy@yahoo.com
基金资助:
The author wishes to thank Prof. Dr. Beshir Ahmed Abd El-Nabey, Prof. Dr. Essam Khamis and Prof. Dr. Ashraf Moustafa, Department of chemistry, Faculty of Science, Alexandria University, Alexandria, Egypt for continuous support and providing advanced instruments.

An investigation of the synergistic effect between (1,3-Dioxolan-2-ylmethyl)–triphenylphosphonium bromide and iodide ion for the corrosion inhibition of zinc in citric acid

M. Saadawy

Chemistry Department, Faculty of Science, Alexandria University, Egypt Ibrahimia, El-Horeya Street P.O. BOX 426 Alexandria 21321

Received:2015-12-22 Revised:2016-03-10 Published:2017-08-25 Online:2016-04-14
Contact: M. Saadawy E-mail:marwan.saadawy@yahoo.com
Supported by:
The author wishes to thank Prof. Dr. Beshir Ahmed Abd El-Nabey, Prof. Dr. Essam Khamis and Prof. Dr. Ashraf Moustafa, Department of chemistry, Faculty of Science, Alexandria University, Alexandria, Egypt for continuous support and providing advanced instruments.

摘要/Abstract

摘要： 采用称重法、动电位极化法和电化学交流阻抗技术研究了30 ^oC时(1,3-Dioxolan-2-ylmethyl)三苯基溴化磷（DTPB）对0.5 mol·L^-1柠檬酸中锌腐蚀行为的影响. 通过在环保型电解槽中对锌进行酸洗，这在文献中是不常用的. 结果表明，DTPB作为一种有效的防蚀剂，添加浓度仅为3×10^-3 mol·L^-1时，锌在柠檬酸溶液中的防蚀效率可达98.9%. 由于DTPB和碘化钾存在协同效应，两者联用时的防蚀效果要比单独使用DTPB强，防蚀参数为1.2，并随温度升高而减小. 本文提出了碘化钾作为吸附媒介，可使金属表面与DTPB结合的防蚀机制.

关键词: zinc, polarization, EIS, acid corrosion, synergism

Abstract: The effect of (1,3-Dioxolan-2-ylmethyl)-triphenylphosphonium bromide (DTPB) on the zinc corrosion in 0.5 mol·L^-1 citric acid solution was investigated at 30 ^oC using weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. An ecofriendly bath was used for acid cleaning of zinc, which has not been widely used in literatures. The results showed that DTPB could serve as an effective inhibitor for the zinc corrosion in a citric acid solution with the inhibition efficiency of 98.9% at the DTPB concentration of 3×10^-3 mol·L^-1. A synergistic effect between DTPB and potassium iodide (KI) enhanced the inhibition capability of DTPB, and better inhibition efficiency was achieved as compared with that by using DTPB alone. The synergism parameter had a value of 1.2 and was found to decrease with temperature. An inhibition mechanism is proposed by which KI acts as an adsorption mediator for bonding metal surface and DTPB.

Key words: zinc, polarization, EIS, acid corrosion, synergism

中图分类号:

O646

M. Saadawy. 柠檬酸中锌防蚀剂（1,3-Dioxolan-2-ylmethyl）三苯基溴化磷和碘离子的协同效应研究[J]. 电化学（中英文）, 2017, 23(4): 441-455.

M. Saadawy. An investigation of the synergistic effect between (1,3-Dioxolan-2-ylmethyl)–triphenylphosphonium bromide and iodide ion for the corrosion inhibition of zinc in citric acid[J]. Journal of Electrochemistry, 2017, 23(4): 441-455.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.151222

https://electrochem.xmu.edu.cn/CN/Y2017/V23/I4/441

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柠檬酸中锌防蚀剂（1,3-Dioxolan-2-ylmethyl）三苯基溴化磷和碘离子的协同效应研究

An investigation of the synergistic effect between (1,3-Dioxolan-2-ylmethyl)–triphenylphosphonium bromide and iodide ion for the corrosion inhibition of zinc in citric acid

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参考文献

[22] Abiola O K, James A O. The effects of Aloe vera extract on corrosion and kinetics of corrosion process of zinc in HCl solution. Corrosion Science, 2010, 52(2): 661-664.

[51] Lyberatos G, Kobotiatis L. Inhibition of aluminum 7075 alloy corrosion by the concerted action of nitrate and oxalate salts. Corrosion Science, 1991, 47(11): 820-824.

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