Promotional effects of Ce4+, La3+ and Nd3+ incorporations on catalytic performance of Cu–Fe–Ox for decomposition of N2O

Promotional effects of Ce4+, La3+ and Nd3+ incorporations on FeCu2O3.5/ATS for decomposing N2O were investigated. Results showed that all the ions especially La3+ can dramatically improve the catalytic performance. FeCu2La1.5Ox/ATS, the optimal catalyst, can decompose 100% N2O at 550 °C. The formed perovskite-type LaFeO3 and spinel-type CuLa2O4 largely improved catalytic performance. The ion modification increased N2O adsorption capacity, and La3+-doped catalyst enhanced desorption ability of surface oxygen. Both effects can accelerate the rate-determine steps of N2O decomposition reaction, promote catalytic performance. Moreover, the supported catalysts studied were economic efficiency for application.