| 溴化十六烷基吡啶在HCl中对冷轧钢的缓蚀作用 |
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| 引用本文： | 邓书端,李向红,付惠.溴化十六烷基吡啶在HCl中对冷轧钢的缓蚀作用[J].云南化工,2010,37(2):7-9,13. |
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| 作者姓名： | 邓书端 李向红 付惠 |
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| 作者单位： | 1. 西南林学院,木质科学与装饰工程学院,云南,昆明,650224
2. 西南林学院,基础部,云南,昆明,650224 |
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| 基金项目： | 云南省教育厅自然科学研究基金，西南林学院林产化工加工工程校级重点学科建设项目 |
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| 摘 要： | 用失重法研究了在1.0 mol/L HCl中20~50℃时溴化十六烷基吡啶(HDPB)在冷轧钢表面上的吸附及缓蚀作用。结果表明,HDPB对钢具有良好的缓蚀作用,缓蚀率随缓蚀剂浓度和温度的增加而增大;HDPB在钢表面的吸附符合Langmuir吸附模型。求出了相应的吸附热力学参数(吸附自由能ΔG0,吸附焓ΔH0,吸附熵ΔS0),并根据这些参数详细讨论了缓蚀作用机理。
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| 关 键 词： | 盐酸 钢 溴化十六烷基吡啶 吸附 缓蚀 |
Inhibition Effect of Hexadecylpyridinium Bromide on Cold Rolled Steel in HCl Solution |
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| DENG Shu-duan,LI Xiang-hong,FU Hui.Inhibition Effect of Hexadecylpyridinium Bromide on Cold Rolled Steel in HCl Solution[J].Yunnan Chemical Technology,2010,37(2):7-9,13. |
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| Authors: | DENG Shu-duan LI Xiang-hong FU Hui |
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| Affiliation: | 1. Faculty of Wood Science and Decoration Engineering, Southwest Forestry University, Kunming 650224, China; 2. Department of Fundamental Courses, Southwest Forestry University, Kunming 650224, China) |
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| Abstract: | The adsorption and inhibition effect of hexadecylpyridinium bromide （HDPB） on cold rolled steel （CRS） in 1.0 mol/L HC1 solution at 20 - 50℃ has been investigated by weight loss method. The results show that HDPB is a very good inhibitor for CRS in HC1 solution, and the maximum inhibition efficiency is up to 98.4%. The adsorption of HDPB on CRS surface obeys Langmuir adsorption isotherm equation. Three adsorption thermodynamic parameters （ adsorption free energy △G^0, adsorption heat △H^0, adsorption entropy △S^0 ） are also calculated. The inhibitive mechanism is discussed in detail according to the parameters. |
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| Keywords: | Hydrochloric acid steel hexadecylpyridinium bromide adsorption inhibition |
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