An overview is given on the ongoing activities in the area of the deco
mposition of nitrous oxide, N2O, over solid catalysts. These catalysts
include metals, pure and mixed oxides, supported as well as unsupport
ed, and zeolitic systems. The review covers aspects of the reaction me
chanism and kinetics, focusing on the role of surface oxygen, the inhi
bition by molecular oxygen, water and other species, poisoning phenome
na and practical developments.