Hydrogen Production by the Catalytic Reforming of Volatile from Biomass Pyrolysis over a Bimetallic Catalyst

Abstract

Ni-Co/γ-Al₂O₃, Ni/γ-Al₂O₃, Co/γ-Al₂O₃, mechanical mixed Ni/γ-Al₂O₃, and Co/γ-Al₂O₃ catalyst (another name is Ni/γ-Al₂O₃|Co/γ-Al₂O₃) were prepared by the wet impregnation method, and the catalytic performance for hydrogen production by catalytic reforming of volatile from biomass pyrolysis over the four catalysts was compared under the condition of different temperatures and weight hourly space velocity. The experimental results show that the catalytic performance of the four catalysts from high to low is Ni-Co/γ-Al₂O₃ > Co/γ-Al₂O₃ > Ni/γ-Al₂O₃|Co/γ-Al₂O₃ > Ni/γ-Al₂O₃ within the studied temperature and weight hourly space velocity scope. Hydrogen selectivity of 94.83% and hydrogen yield of 120.81 g/kg biomass (dry basis) were obtained over Ni-Co/γ-Al₂O₃ under the condition of catalytic reforming temperature of 825°C and weight hourly space velocity of 0.71 h⁻¹.

Keywords:

• bimetallic catalyst
• biomass
• catalytic reforming
• hydrogen production
• pyrolysis