The Study of Promotion Mechanism of Ni/Al2O3 Catalyst for Supercritical Water Gasification of Glucose to Produce Hydrogen
Supercritical water gasification of wet biomass into clean hydrogen energy represents an expansive frontier for innovative applications.This research delved into the influence of Ni/Al2O3 catalyst on the performance of supercritical water gasification of glucose,a hydrolysis product of cellulose,for hydrogen production.The findings underscored the excellent efficiency of the Ni/Al2O3 supported catalyst in facilitating the supercritical water gasification of glucose for hydrogen generation.Specifically,using Ni/Al2O3 catalyst,the carbon gasification rate of glucose achieved a remarkable 90.8%,with a hydrogen selectivity of 87.1%.Moreover,the total gas yield and H2 yield over Ni/Al2O3 catalyst reached 82.12 mol/kg and 48.73 mol/kg,respectively,which are 3.0 and 3.2 times than that of K2CO3 catalyst.The Ni/Al2O3 catalyst notably enhances the formation of smaller organic molecules from glucose,which is advantageous for the pyrolysis of biomass and the steam reforming reaction,thereby yielding an increased production of H2 and CO2.This study offers valuable insights for subsequent research endeavors,which focused on the catalytic gasification of cellulose-based native biomass for hydrogen production,utilizing Ni/Al2O3 catalyst.
biomasssupercritical water gasificationhydrogen production from glucoseproduct distributionNi/Al2O3 catalyst
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