H2 Production from Toluene Steam Reforming Over Ni/Perovskite Catalysts With Presence of Promoters

Aiming to synthesize a kind of catalyst with high tar steam reforming reactivity, the effect of promoters modified Ni/Perovskite were experimentally tested and comprehensively evaluated. In this work, the catalytic performance was carried out by using toluene as biomass tar model at different temperatures (600◦C, 650◦C, 700◦C) and various support quantities of promoters (ω = 0.5%, 1%, 2%, 4%), and changes in morphology and phase of catalysts were characterized by TEM, XRD, TPR, XPS, etc. Experimental results indicated the maximum toluene conversion and hydrogen yield reached 84.7% and 57.4% respectively under standard stoichiometric ratio by using ω = 2% Ce as promoter. The reason is the presence of Ce promoter increased the content of lattice oxygen, which further enhanced the gasification of coke precursor and reduced the coke deposition, therefore maintained the catalytic activity. © 2023 Science Press. All rights reserved.