Catalytic steam gasification of biomass with CO2 capture is one of the most promising way for the sustainable hydrogen production.In this study,Ni-based catalyst(NiO/γ-Al2O3)coupled with CO2 sorbent(dolomite)was involved with the point view of H2-rich syngas from steam gasification of biomass in a two-stage gasifier.Catalysts were prepared with the impregnation and characterized by variant approaches,while produced gas was analyzed with micro-gas chromatography(GC).The effects of gasification temperature,NiO loading as well as catalyst to biomass ratio on hydrogen production were investigated.