Experimental evaluation of inhibition performance and inhibition mechanism analysis of amino acid inhibitors

被引:1
|
作者
Zhang J. [1 ]
Yan Y.-G. [1 ]
Ren Z.-J. [1 ]
Hu S.-Q. [1 ]
Qiao G.-M. [1 ]
机构
[1] College of Physics Science and Technology in China University of Petroleum
关键词
Inhibition mechanism; Molecular dynamics simulation; Quantum chemistry calculation; Weight loss measurement;
D O I
10.3969/j.issn.1673-5005.2010.03.031
中图分类号
学科分类号
摘要
The inhibition performances of three amino acids were investigated by combination of weight loss measurement and molecular simulation method, and the inhibition mechanism was also studied. The experimental results show that the inhibition efficiency of cysteine is the highest, followed by valine, and alanine is the worst. The active reactions of molecules are similar. Cysteine molecule possesses two electrophilic attack centers, which bore the highest reaction activity, and valine molecule exhibits higher reaction activity than alanine molecule. The adsorption stability of cysteine is the strongest, followed by valine, and alanine is the worst. The theoretical results show that the inhibition efficiency of cysteine is the highest, followed by valine, and alanine is the worst, which agree well with the experimental results.
引用
收藏
页码:152 / 156
页数:4
相关论文
共 21 条
  • [1] Jovancicevic V., Ramachandran S., Prince P., Inhibition of CO<sub>2</sub> corrosion of mild steel by imidazoline corrosion inhibitor, Corrosion, 3, 6, pp. 259-267, (1998)
  • [2] Cruz J., Martinez-Aguilera L.M.R., Salcedo R., Et al., Reactivity properties of derivatives of imidazoline: An ab initio DFT study, International Journal of Quantum Chemistry, 85, 4-5, pp. 546-556, (2001)
  • [3] Zhang J., Hu S.-Q., Zhang L.-H., Et al., Molecular modeling for inhibition of CO<sub>2</sub> corrosion of carbon steel by imidazolin self-assembly membrane, Journal of China University of Petroleum(Edition of Natural Science), 24, 1, pp. 141-144, (2008)
  • [4] Liu X., Chen S., Zhai H., The study of self-assembled films of triazole on iron electrodes using electrochemical methods, XPS, SEM and molecular simulation, Electrochemistry Communications, 9, 4, pp. 813-819, (2007)
  • [5] Wu W.-M., Yang P., Du H.-Y., Application of amino acid in metal corrosion suppression, Surface Technology, 35, 6, pp. 51-56, (2006)
  • [6] Parr G.P., Weitao Y., Density functional approach to the frontier-electron theory of chemical reactivity, Journal of American Chemical Society, 106, 14, pp. 4049-4050, (1984)
  • [7] Bereket G., Hur E., Ogretir C., Quantum chemical studies on some imidazole derivatives as corrosion inhibitors for iron in acidic medium, Journal of Molecular Structure: Theochem, 578, 1-3, pp. 79-88, (2002)
  • [8] Cruz J., Pandiyan T., Garcia-Ochoa E., A new inhibitor for mild carbon steel: Electrochemical and DFT studies, Journal of Electoral Chemistry, 583, 1, pp. 8-16, (2005)
  • [9] Rodriguez-Valdez L.M., Martinez-Villafane A., Glossman-Mitnik D., Computational simulation of the molecular structure and properties of heterocyclic organic compounds with possible corrosion inhibition properties, Journal of Molecular Structure: Theochem, 713, 1-3, pp. 65-70, (2005)
  • [10] Lashkari M., Arshadi M.R., DFT studies of pyridine corrosion inhibitors in electrical double layer: Solvent, substrate, and electric field effects, Chemical Physics, 299, 1, pp. 131-137, (2004)