期刊
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
卷 170, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jaap.2023.105876
关键词
Hydrodeoxygenation; Guaiacol; NiCoAl catalyst; Cyclohexanol; Synergistic effects
A new catalyst, Ni1Co3Al2-600, was developed for the hydrodeoxygenation process of biomass to produce biofuels and chemicals. The catalyst showed excellent catalytic performance and stability.
Hydrodeoxygenation is one of the key steps to upgrade of biomass derived bio-oil into valuable biofuels and chemicals. Developing of highly reactive and cost-effective catalysts for bio-oil hydrodeoxygenation is highly desired. Layered NixCoyAlz catalyst was prepared using layered double hydroxide (LDH) as the precursors. The optimized Ni1Co3Al2-600 catalyst exhibits excellent catalytic performance for guaiacol hydrodeoxygenation. Guaiacol could completely converted with 90.0% of cyclohexanol selectivity under relatively mild reaction conditions. The XRD and HRTEM characterizations of the as prepared catalysts confirmed the formation of Ni-Co alloy and the XPS analysis revealed the strong interaction between Al species with both Ni and Co in catalyst Ni1Co3Al2-600, which should contribute to its high catalytic activity for guaiacol hydrodeoxygenation. Catalyst Ni1Co3Al2-600 also demonstrated excellent versatility for the hydrodeoxygenation reactions of guaiacyl and syringyl compounds as well as high stability. The results from this work could provide a new approach for the constructing of effective catalysts from non-noble metal LDHs.
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