Selective Conversion of Methane to C2 Hydrocarbons using Carbon Dioxide as an Oxidant over CaO-MnO/CeO2

Abstract:

Carbon dioxide rather than oxygen seemed to be an alternative oxidant for the catalytic reaction of methane to produce C₂hydrocarbons via oxidative coupling of methane (CO₂ OCM). The proper amount of medium and strong basic sites and the reducibility of the catalyst enhanced the CH4 conversion and C₂ hydrocarbon yield, which may be due to the synergistic effect among CeO₂, CaO and MnO in the catalyst. The C₂ hydrocarbons selectivity and yield of 75.6% and 3.9%, respectively were achieved over the 12.8CaO-6.4MnO/CeO₂ catalyst. The catalyst showed a good stability for 20 h time on stream in the CO₂OCM process.

1. Nor Aishah Saidina Amin and Istadi (2006). Selective Conversion of Methane to C₂ Hydrocarbons using Carbon Dioxide as an Oxidant over CaO-MnO/CeO₂ Studies in Surface Science & Catalysis, 159, 213-216, Elsevier B.V.