A Method For Methane Processing
The invention relates to gas processing, in particular, to oxidative methane conversion to synthesis gas and subsequent conversion to olefins. The invention aim is to improve methane conversion and process selectivity towards low-molecular-weight hydrocarbons. The catalyst is prepared with the use of manganese silicate of composition (wt.%):
The silicate is impregnated with a solution of KOH to provide a 1.8-2.4 wt.% content of K2O in final catalyst. The product obtained is dried at 110°C and calcined at 1050°C. This catalyst is used for methane conversion to synthesis gas at CH4:CO2=1:1 and temperature of 950-970°С.
The catalyst for synthesis gas conversion to olefins is prepared by impregnating γ-Al2O3 with solutions of Fe(NO3)2×9H2O and KOH to provide a content of 8.1-9.2 wt.% Fe and 2.2-6.9 wt.% K in final catalyst. The catalyst is dried at 110°C, calcined at 400°C and reduced by synthesis gas at 415-425°C. The selectivity of synthesis gas conversion to C2-C3 olefins equals 20-26%.