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http://dx.doi.org/10.5012/jkcs.2018.62.5.358

The Availability of Automobile Catalytic Convert of Copper Based on the DFT Calculations of Cu-NO Complexes  

Ha, Kwanga (Changwon-Nam High School)
Lee, Min-Joo (Department of Biology and Chemistry, Changwon National University)
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Abstract
The purpose of this study is to show the possibility of using Cu catalyst in removal of $NO_x$ from automobile exhaust which is regarded as the primary source of fine dust PM2.5. The energy and the bond lengths of the three possible structures of Cu-NO complex, which is formed by binding NO molecule to Cu, and the changes in IR and Raman spectra are calculated using MPW1PW91 method on the level of 6-311(+)G(d,p) of basis sets with Gaussian 09 program. As a result, the enthalpy of formation of the Cu-NO complexes are obtained as ${\Delta}H=104.89$, 91.98, -127.48 kJ/mol for the linear, bent, and bridging forms of them, respectively. And the bond lengths between N and O in NO complexes, which becomes longer than NO molecule, indicates that O is easily reduced from Cu-NO. In addition, the Cu-NO complexes using Cu catalyst can be easily measured by infrared or Raman spectroscopy because in the IR and Raman spectra of the NO and Cu-NO complexes the positon and the intensity of bands are definitely different in each vibration mode.
Keywords
NO; Cu-NO complexes; Fine dust; Energy stability; IR and Raman spectra;
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