Oxidative Coupling of Methane Over Ceria Doped Calcium Oxide.

The oxidative coupling of methane over calcium oxide doped with ceria has been investigated. Results obtained at 750°C are reported here. Ceria loading was observed to affect methane conversion and selectivity to C 2 hydrocarbons. The selectivity to C 2 hydrocarbons over the catalyst was enhanced by the doping of Na 2 CO 3 It was however observed that longer calcination time for the Na 2 CO 3 /CeO 2 /CaO catalyst resulted in lower selectivity to C 2 hydrocarbons. This suggests that the length of calcination time determined the nature of catalyst surface which intum influenced its catalytic activity.