Optimization of glycerol steam reforming for hydrogen over Pt-Li2O-Al2O3 catalyst based on response surface method
Pt-Li2O-Al2O3 catalyst was prepared by equal volume step impregnation method,the process of glycerol steam reforming for hydrogen production was optimized by Box-Behnken design of response surface method with glycerol as raw material and hydrogen production rate as the evaluation index.The phase and specific surface area of Pt-Li2O-Al2O3 catalyst were characterized by SEM and BET,and the carbon deposition before and after the use of the catalyst was observed and analyzed by camera.The results showed that when the reaction temperature was 632 ℃,the water ratio to alcohol was 26.The space velocity of glycerol was 0.17 h-1,the hydrogen yield was 5.445,5.428,which was close to the predicted hydrogen yield was 5.390.Pt-Li2O/Al2O3 catalyst has grough surface,porous structure,large average pore radius,and total pore volume.It has good carbon resistance.
Response surface methodGlycerolHydrogen production
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