Fluidizable catalysts based on Ni/γAl2O3 with added Ru were used for the gasification of
a lignin surrogate (2-methoxy-4-methylphenol) in a fluidized CREC Riser Simulator reactor. This was
done in order to quantify lignin surrogate conversion and lignin surrogate products (H2, CO, CO2 and
CH4) as well as the coke deposited on the catalyst. The catalysts that were evaluated contained 5% wt. Ni
with various Ru loadings (0.25%, 0.5% and 1% wt). These catalysts were synthesized using an incipient
Ni and Ru co-impregnation. Catalysts were characterized using XRD, N2 adsorption-desorption (BET
Surface Area, BJH), Temperature Programmed Reduction (TPR), Temperature Programmed Desorption
(TPD) and H2 chemisorption. Catalytic steam gasification took place at 550, 600 and 650 ◦C using 0.5,
1.0 and 1.5, steam/biomass ratios. The results obtained showed that Ru addition helped to decrease
both nickel crystallite site sizes and catalyst acid site density. Moreover, it was observed that coke on
the catalyst was reduced by 60%. This was the case when compared to the runs with the Ni/γAl2O3
free of Ru
