Conclusions

• The presented results confirmed the feasibility of hydrogen-rich gas production in the process of steam gasification of coal combined with CO2 capture.

• Fe2O3 added enhanced the conversion rate of CO to CO2, whereas CaO effectively absorbed the produced CO2 (particularly when mixed with a coal sample).

• The total contents of 83% and 90% of hydrogen in the gaseous products mixture were achieved in the process of steam gasification of coal at the temperature of 923 K with addition of Fe2O3 and CaO in layers and mixed, respectively.

• The total yields of hydrogen produced in 1 h gasification tests increased with the temperature of the process and the highest ones were observed at the temperature of 1173 K (5295 ml and 5901 ml in case of additives of Fe2O3 and CaO layered and mixed, respectively).

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