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Adsorption behavior of inhibitor on copper surface

Liu Na-Na Sun Jian-Lin Xia Lei Zeng Ying-Feng

Adsorption behavior of inhibitor on copper surface

Liu Na-Na, Sun Jian-Lin, Xia Lei, Zeng Ying-Feng
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  • Abstract views:  609
  • PDF Downloads:  1256
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  • Received Date:  07 June 2013
  • Accepted Date:  13 July 2013
  • Published Online:  20 October 2013

Adsorption behavior of inhibitor on copper surface

  • 1. School of Materials and Engineering, University of Science and Technology Beijing, Beijing 100083, China;
  • 2. Research Institute of Petroleum Processing, Sinopec Corporation, Beijing 100083, China
Fund Project:  Project supported by the Key Program of the National Technology Research and Development Program of the Ministry of Science and Technology of China (Grant No. 2011BAE23B00) and the National Natural Science Foundation of China (Grant No. 51274037).

Abstract: The global and local activity of benzotrialole (BTA) and 2,5-Dimercapto-1,3,4-thiadiazole (DMTD) are calculated by density function theory. Thermodynamic properties of BTA and DMTD are simulated by molecular dynamics. The corrosion inhibition effect of mixed system inhibitor is studied through corrosion test. The results show that the inhibition efficiency of DMTD is larger than that of BTA. There are several active sites which focus on N and S atoms. So the inhibitors are absorbed on the surface of Cu in the parallel direction. The specific heat capacities of Cu absorbing inhibitor are the same as those without Cu adsorbing inhibitor at room temperature. The specific heat capacities increase with inhibitor increasing. They provide the reference for the selection of the inhibitor. The effect of mixed system inhibitor is better and the best mixed ratio is BTA: DMTD=1:1.

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