Thermal generation of singlet oxygen on zeolite ZSM-5

The thermal generation of equilibrium singlet oxygen in air at T > 140 degreesC and the effect of the non-equilibrium thermal desorption of singlet oxygen from zeolites ZSM-5 substituted by cations of alkaline (Cs) and alkaline-earth (Ca) metals are found. Possible mechanisms of singlet oxygen generation during desorption are discussed.