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Investigations on the manufacture of synthesis gas by direct partial oxidation of methane with metallic oxides in a fixed bed were made. From the equilibrium consideration and the experimental results, it was known that iron oxide-alumina was the most adequate oxygen carrier and the addition of alumina to iron oxide had effects on the promotion of reactivity. The oxygen carrier capable of producing carbon monoxide and hydrogen was of two stages of reduction, namely FeO1.33∼FeO and FeO∼FeO0.8. The rate of reaction was larger in the latter stage than in the former; the selectivity of carbon monoxide formation in the former attained to the equilibrium value in CO+FeO_??_CO2+Fe, while in the latter it was over the equilibrium value. In general, the degree of reduction of iron oxide was not uniform throughout the bed; the degree of reduction of the oxide at the inlet was larger than that at the outlet. Moreover, carbon monoxide and hydrogen formed at the inlet side of the bed might be further oxidized at the succeeding parts. Discussions are given on the conditions under which gases rich in carbon monoxide and hydrogen is obtainable.

Studies on Manufacture of Synthesis Gas from Natural Gas by Use of Metallic Oxides