This review focuses on the progress in coal supercritical water gasification for hydrogen production in recent years,introduces the hydrogen production reaction mechanism,systematically summarizes the effects of temperature,concentration,residence time and catalyst on coal supercritical water gasification for hydrogen production,and expounds the development status of coal supercritical water gasification reactor.The future prospect of coal supercritical water gasification to hydrogen production is presented in view of the existing problems.
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