Applied Catalysis A: General, Vol.175, No.1-2, 173-179, 1998
Inhibition of gas-phase oxidation of ethylene in the oxidative conversion of methane and ethane over CaO, La2O3/CaO and SrO-La2O3/CaO catalysts
The conversion of methane, ethane and ethylene has been investigated either in an empty reactor or in the presence of a series of calcium-based catalysts including unpromoted calcium oxide (C), calcium oxide promoted with lanthane (LC) and with both lanthana and strontium oxide (SLC). It was found that these solids inhibit the gas-phase oxidation of ethylene, probably by trapping chain-carrier radicals. At T>1000 K, the inhibiting effectiveness varies in the order C