Dithioamide Derivative as an Efficient Inhibitor for Mild Steel in Hydrochloric Acid
文献类型：期刊论文
| 作者 | Deng Jun-Ying1,2; Jiang Xiao-Hui3; Li Wei-Hua1; Zhao Xia1 ; Yu Liang-Min3; Hou Bao-Rong1
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| 刊名 | ACTA PHYSICO-CHIMICA SINICA
 |
| 出版日期 | 2010 |
| 卷号 | 26期号:1页码:34-38 |
| 关键词 | Inhibitor Dithioamide derivative Hydrochloric acid Absorption Potentiodynamic polarization Electrochemical impedance spectroscopy |
| 英文摘要 | Dithio-N,N'-dimethoxypropyldipropionamide (DPDA) was investigated as a corrosion inhibitor for Mild steel in 1 mol.L-1 hydrochloric acid using weight loss test, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), quantum chemical study, and Raman spectroscopy. The weight loss test results showed that DPDA was an excellent inhibitor for mild steel in acid media with an inhibition efficiency of 90.2% at the DPDA concentration of 1x10-3 mol.L-1. The polarization curves indicated that DPDA behaved as a mixed-type inhibitor while the single capacitive loop in the Nyquist plots revealed that the corrosion was a charge transfer controlled process. Inhibition efficiencies increased with the increase of DPDA concentrations, and the values of the inhibition efficiencies, obtained from the weight loss test, potentiodynamic polarization, and EIS, were in reasonable agreement. The absorption of DPDA was found to obey the Langmuir adsorption isotherm. The free energy of adsorption (Delta G(ads)(0)) was found to be -38.65 kJ.mol(-1) and this value indicated that the adsorption was mainly chemisorption. This results from the sharing or/and transfer of electrons from the DPDA molecules to the metal surface to form coordinate bonds. The negative Delta G(ads)(0) value revealed that the adsorption of DPDA was a spontaneous process. Raman spectra suggest that DPDA adsorbed well onto the mild steel surface, and the quantum chemical study showed that the sulphur atoms in the DPDA molecule were the main active sites that resulted in absorption on the surface of the mild steel. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000273849300007 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/32722]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 海洋研究所_海洋地质与环境重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Shandong, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Ocean Univ China, Coll Chem & Chem Engn, Qingdao 266003, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Deng Jun-Ying,Jiang Xiao-Hui,Li Wei-Hua,et al. Dithioamide Derivative as an Efficient Inhibitor for Mild Steel in Hydrochloric Acid[J]. ACTA PHYSICO-CHIMICA SINICA,2010,26(1):34-38. |
| APA | Deng Jun-Ying,Jiang Xiao-Hui,Li Wei-Hua,Zhao Xia,Yu Liang-Min,&Hou Bao-Rong.(2010).Dithioamide Derivative as an Efficient Inhibitor for Mild Steel in Hydrochloric Acid.ACTA PHYSICO-CHIMICA SINICA,26(1),34-38. |
| MLA | Deng Jun-Ying,et al."Dithioamide Derivative as an Efficient Inhibitor for Mild Steel in Hydrochloric Acid".ACTA PHYSICO-CHIMICA SINICA 26.1(2010):34-38. |
入库方式： OAI收割
来源：海洋研究所
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