Abstract
The role played by electronically excited oxygen in exoemission and heterogeneous catalysis is considered. The results obtained in a study of thermally stimulated exoemission from the surface of Al2O3 and SiO2 are compared with data of temperature-programmed desorption of singlet oxygen O2(1Δg) from the surface of Al2O3 and HZSM-5 zeolites with different SiO2/Al2O3 ratios. The role played by electronically excited oxygen states in heterogeneous catalysis is discussed on the basis of our own and literature data. Thermally stimulated exoemission after the action of an electron flow is considered taking into account electron-stimulated desorption and the available data on electron bombardment in catalysis.
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