N₂O is a stratospheric ozone-depleting greenhouse gas with a global warming potential. The catalytic decomposition of N₂O is one of the most promising and economical techniques to reduce the amount of the gas in the atmosphere. In the present study, the effects of support materials and Ir loading on the catalytic N₂O decomposition properties were comprehensively investigated. The decomposition activity is closely associated with the Ir dispersion which is estimated using pulsed CO chemisorption. In addition, NO-TPD profiles and in situ FTIR spectra revealed a correlation between the adsorption properties of N₂O/NO_x and the catalytic N₂O decomposition activity.

N ₂ O是平流层消耗臭氧的温室气体，具有全球变暖的潜力。N ₂ O的催化分解是减少大气中气体数量的最有前途和最经济的技术之一。在本研究中，全面研究了载体材料和Ir含量对催化N ₂ O分解性能的影响。分解活性与Ir分散密切相关，Ir分散是通过脉冲CO化学吸附估算的。此外，NO-TPD曲线和原位FTIR光谱揭示了N ₂ O / NO _x的吸附性能与催化N ₂之间的相关性。O分解活性。