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Issue 26, 2010
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CO-promoted N2 adsorption on copper atoms

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Abstract

Reactions of laser-ablated copper atoms with carbon monoxide and dinitrogen in excess argon have been investigated by matrix-isolation infrared spectroscopy. The NNCuCO and (NN)2CuCO complexes, as well as copper carbonyls, are formed as reaction products during sample deposition and further annealing whereas no copper dinitrogen complexes were observed. These carbonylcopper dinitrogen complexes are characterized on the basis of the results of the isotopic substitution and the reagent concentration change. Density functional theory calculations of the geometry structures, vibrational frequencies, relative absorption intensities, and isotopic shifts strongly support the experimental assignments. The experimental results reveal promoted adsorption of N2 on Cu atoms by preadsorbed CO. The theoretical results for reaction characteristics between the coadsorbed CO and N2 agree with the experimental findings. The joint investigations provide insights with regard to CO and N2 cooperative adsorption effects and consequent reaction mechanisms.

Graphical abstract: CO-promoted N2 adsorption on copper atoms

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Publication details

The article was received on 07 Jan 2010, accepted on 24 Mar 2010 and first published on 21 May 2010


Article type: Paper
DOI: 10.1039/C000398K
Citation: Phys. Chem. Chem. Phys., 2010,12, 7077-7082

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    CO-promoted N2 adsorption on copper atoms

    Z. Lu and Q. Xu, Phys. Chem. Chem. Phys., 2010, 12, 7077
    DOI: 10.1039/C000398K

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