Study On Catalytic Steam Reforming Of Bio-oil Model Compound For Hydrogen Production

Hydrogen is a kind of clean energy.Biomass fast pyrolysis,then obtain bio-oil,catalytic steam reforming it for hydrogen production.In this paper,single model compounds(m-cresol,glycerol)and hybrid model compounds(such as acetic acid,ethylene glycerol,phenol and acetone)as the bio-oil model compounds,catalytic steam reforming of these for hydrogen production on fixed bed reactor were mainly studied.The influence of reaction temperature,reaction time,water/carbon ratio and WHSV were explored,in order to find the optimum technological conditions.Thermodynamic analysis was carried out based on steam reforming of glycerol via Gibbs free energy minimum method.The optimal reaction conditions can be conclude as:temperature 600-850?,S/C?6 and pressure 1 atm.Co-Fe/HZSM-5 catalyst were prepared by impregnation method,and characterized by XRD,SEM and TG technologies,catalytic steam reforming of glycerol for hydrogen production.Results show that performance of Co0.-75-Fe0.25/HZSM-5 catalyst is optimum,optimum conditions:reaction temperature 600?,S/C 8:1 and WHSV 1.94 h-1,yield hydrogen production is highest,about 52%,and the stability of the catalyst is better.Acetic acid,ethylene glycerol,phenol and acetone mixture for bio-oil model compounds,Co-Fe/HZSM-5 as catalyst,catalytic steam reforming experiment.Results show that reaction temperature 650?,S/C=10,WHSV=2 h-1,under this condition,hydrogen production yield reaches maximum,about 57%.Ni/HZSM-5,Fe/HZSM-5 and Ni-Fe/HZSM-5 catalysts were prepared by co-precipitation method,the catalyst were characterized via XRD,BET and SEM technologies,catalytic steam reforming of m-cresol for hydrogen production.Results show that performance of Ni-Fe/HZSM-5 catalyst is optimum,the optimal process conditions:reaction temperature 650?,reaction the 120 min and S/C 8,when the hydrogen production yield reaches maximum,about 54%.