期刊
ENERGY & FUELS
卷 31, 期 12, 页码 14089-14096出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.energyfuels.7b02561
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This work focused on the investigation of the effect of zirconium incorporation into the structure of the Ni/AlSBA-15 catalyst on its performance in high-temperature conversion of cellulose (the main component of lignocellulosic feedstock) to hydrogen-rich gas. The modified supports were prepared by direct incorporation of zirconium and impregnation methods. The obtained results exhibited that introduction of zirconium into the structure of Ni/AlSBA-15 allowed for a considerable increase in the amount of hydrogen produced in the studied process in comparison to unmodified Ni/AlSBA-1.5 material. The characterization of physicochemical properties of the investigated materials (X-ray diffraction, scanning electron microscopy energy-dispersive X-ray spectroscopy, time-of-flight secondary ion mass spectrometry, temperature-programmed reduction, temperature-programmed desorption of ammonia, etc.) showed that the preparation of mesoporous Ni/ZrAlSBA-15 with the use of the direct synthesis method led to obtaining the catalyst with a higher surface area and pore volume and smaller crystallites of an active phase in comparison to the material containing nickel supported on ZrAlSBA-15 with zirconium introduced by impregnation. Despite that the mesoporous catalyst prepared by impregnation possessed higher acidity, its structure underwent partial collapse during the preparation procedure.
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