Syngas production by two-stage method of biomass catalytic pyrolysis and gasification

► We separated pyrolysis and gasification processes into two stages. ► The maximum syngas yield was up to 3.29 N m3/kg, much higher than previous studies. ► The pyrolysis dynamics can be described by Arrhenius first-order kinetic model. ► Formation of Mg0.4Ni0.6O and increase of Ni0 size caused catalyst deactivation.