Abstract
A new series of very selective rare earth oxyfluoride LaF 3 CeO 2 catalysts was prepared and used for the oxidative dehydrogenation of ethane (ODE). At 953 K and C 2H 6 : O 2 : N 2=2 : 1 : 7, C 2H 4 selectivity of 94.5% with C 2H 6 conversion of 23.4% were achieved over LaF 3 CeO 2 (1 : 1 in mole) catalyst. XRD and BET measurements showed that LaF 3 dissolved in CeO 2 and acted as an isolation material as well as partial anions (F −, O 2−) and/or cations (La 3+, Ce 4+) exchange between LaF 3 and CeO 2 phases might be responsible for the high selectivity.
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