Cofeeding of methane and ethane over Na2WO4-Mn/SiO2 catalyst to produce ethylene

Methane/ethane cofeeding experiments are conducted at 1093 K and atmospheric pressure over Na 2 WO 4 -Mn/SiO 2 catalyst. The addition of ethane to OCM feed at a fixed CH 4 /O 2 ratio results in a decrease in methane conversion. But this decrease can be remedied by increasing oxygen flow rate. Ethane can be co-converted with methane. Methane/ethane cofeeding reaction can be simply regarded as two parallel reactions of oxidative coupling of the fed methane and oxidative dehydrogenation of the fed ethane. The selectivity of OCM reaction is only dependent on methane conversion and is not affected by the addition of ethane and the change of initial CH 4 /O 2 ratio. The OXD reaction of ethane in the presence of methane can achieve very high conversion with high selectivity.