화학공학소재연구정보센터
Chemical Engineering Science, Vol.54, No.20, 4343-4349, 1999
Investigation of the catalytic decomposition of NO and N2O on supported Rh with transient techniques
The adsorption of NO, the self-decomposition of N-2,O and the catalytic reduction of NO with H-2, were investigated with transient step-response experiments over an alumina-supported Rh monolith. The experiments were carried out under atmospheric pressure at a temperature range of 150-350 degrees C. The experiments revealed the self-decomposition of N-2,O to N-2 and O-2 as well as the reduction of NO with H-2. The reduction of NO gave N, as a main product and N2O as a by-product. Based on the experimentally recorded transient response curves, "oxidation-reduction" surf;surface reaction mechanisms were discussed for the NO-H-2 reaction system. The mechanism assumes a common surface intermediate for the formation of N-2 and N2O.