Direct decomposition of nitrous oxide in the presence of oxygen over iridium catalyst supported on alumina

Catalytic decomposition of propellant N2O Over Ir/Al2O3 catalyst

“…Up to now, various catalysts have been developed for the decomposition of N 2 O, such as metal‐exchanged zeolites, spinel, perovskite, hexaaluminate, ex‐hydrotalcites, and supported noble metals . For example, the Fe‐ZSM catalyst was highly active and stable for direct N 2 O decomposition of simulated tail‐gas from nitric acid plants .…”

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

“…And, the method of directly catalytic decomposition is the most potential and economical one [3][4][5][6][7][8]. Catalysts for direct decomposition of N 2 O such as supported noble metals [9][10][11][12][13], metal oxides [3,14], complex metal oxides [2,15], and zeolites [16,17] have been reported to deal with the emission of N 2 O.…”

Effect of Ir crystallographic site on the catalytic performance of Ir-substituted barium hexaferrites for N2O decomposition

“…This endows the noble metal substituted hexaaluminate a combined advantage: high stability and high activity. Kikuchi et al [19] revealed that the framework Ru improved the partial oxidation of CH 4 , while Pd species was not incorporated in the hexaaluminate structure and the sintering of Pd resulted in the deterioration of the catalytic activity. Favre et al [20] reported that neither interior nor exterior Ir species improved the activity of methane combustion.…”

“…The chemistry for N 2 O as a propellant lies in the decomposition of N 2 O into N 2 and O 2 accompanies with a large amount of heat release and volume expansion, which can be used as propulsion power. Quite different from the abatement of environmental pollutant N 2 O where the concentration of N 2 O is only in ppm level [4][5][6][7], the N 2 O used as the propellant must have a high-concentration, even being a pure chemical, so as to generate the propulsion power as high as possible. However, the decomposition of pure N 2 O is a highly exothermic reaction (the enthalpy is −82 kJ/mol) and leads to a temperature rise over 1000 • C [1,8].…”