Transient study of NO, N_2O, C_3H_6 and C_3H_8 interactions over a silicasupported Pt catalyst

摘要

The generation of N_2 and N_2O during NO decomposition and reduction on Pt/SiO_2 was investigated by means of a TAP reactor. With rich mixtures the hydrocarbon serves to create free surface sites for NO decomposition and/or to induce a direct reaction of NO with carbonaceous resisdues, epecially for C_2H_6. Furthermore, results of both transient and steadystate experiments indicate that adsorbed N_2O is an intermediate leading to N_2.