Abstract
The methane reduction behavior was studied in a molten alkali carbonates (Li 2CO 3, Na 2CO 3, K 2CO 3) system. Thermodynamic and experimental investigations were performed to quantify the product compositions. The results showed that the CO and CO 2 contents in the product gases increased with the reaction temperature, whereas it decreased with the reaction time. The reaction activity order of carbonates was Li 2CO 3 > Na 2CO 3 > K 2CO 3. The selectivity of CO in the mixed molten salts system was higher than that in a pure system. The mixed molten salts system was more suitable than pure system as the reaction medium of CH 4 conversion. H 2 was mainly from the CH 4 cracking, and CO and CO 2 was from the reaction between CH 4 cracking carbon and molten alkali carbonates.
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