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With O_2 and CO as the molecular probes,the reactivity of oxygen species of perovskite-likeoxides SmMnO_3 and SmFeO_3 was studied by thermodesorption spectroscopy(TDS)and temperature-programmed reaction spectroscopy(TPRS)in an ultrahigh vacuum system.The results of the experimentimplied that the oxidation of CO on SmMO_3 may follow Langmuir-Hinshelwood mechanism.
With O_2 and CO as the molecular probes, the reactivity of oxygen species of perovskite-likeoxides SmMnO_3 and SmFeO_3 was studied by thermodesorption spectroscopy (TDS) and temperature-programmed reaction spectroscopy (TPRS) in an ultrahigh vacuum system. The results of the experimentimplied that the oxidation of CO on SmMO 3 may follow Langmuir-Hinshelwood mechanism.