Poisoning effects of Li+ and F– ions in alumina for N2O decomposition

Abstract

The deactivation of alumina, with respect to N₂O decomposition, brought about by doping with various amounts of Li⁺ and F^– ions has been studied. It was demonstrated that the deactivation caused by Li⁺ is due to the fact that these ions cause a decrease in the specific surface area. On the other hand, it was concluded that the deactivation observed after doping with F^– ions should be attributed to both the decrease of the specific surface area and the diminution of the surface concentration of active sites.