Co-adsorptions of CO/N2O, NO/NH3, CO2/N2 and conversion of CO/N2O to CO2/N2 on ZnO graphene-like nanosheet

Adsorption energies of CO, CO2, N2O, N-2, NO, NH3 and CO/N2O, NO/NH3 and CO2/N-2 co-adsorptions on the ZnO graphene-like nanosheet (ZnOGLNS) were obtained using DFT calculations. The energies and thermodynamic properties for conversion of CO + N2O to CO2 + N-2 over the ZnOGLNS, its equilibrium constant and adsorption coefficients are reported. The activation energy for the conversion reaction of CO + N2O to CO2 + N-2 over the ZnOGLNS of 42.30 kcal/mol was obtained. The CO + N2O to CO2 + N-2 conversion over the ZnOGLNS is the energetically and thermodynamically preferred reaction. (C) 2012 Elsevier B.V. All rights reserved.