The activation of O2 and the oxidative dehydrogenation of C2H6 over SmOF catalyst

摘要: The activation of O2 over SmOF was studied by in situ laser Raman spectrometry and temperature programmed desorption (TPD). When the hydrogen- helium-treated (1 h for each gas at 973 K) sample cooled to 303 K oxygen, bands which correspond existence O22−, O2n− (2 >n > 1), O2− O2δ-(1 >δ 0) species were observed. From K, there no but observed reduced intensity vanished completely even though under an atmosphere oxygen. We suggest that as increased, dioxygen converted mono-oxygen such O− undetectable spectrometry. occurred above giving a TPD-peak 1095 K. C2 H6 pulsed pretreated with oxygen helium C2H4 selectivity 91.8%. conclude is responsible oxidative dehydrogenation ethane ethene.