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2. Ni/hierarchical ZSM-5 zeolites as promising systems for phenolic bio-oil upgrading: Guaiacol hydrodeoxygenation

Author

Wu Xiaozhuo, Mingjie Liao, Chunyan Tu, Hongyan Wang, Wenlin Li, Cui Xingyu, Luis E. Betancourt, Jiajun Zheng, Feng Li, and Ruifeng Li

Subjects
Chemistry, 020209 energy, General Chemical Engineering, Organic Chemistry, Energy Engineering and Power Technology, chemistry.chemical_element, 02 engineering and technology, Catalysis, chemistry.chemical_compound, Nickel, Fuel Technology, 020401 chemical engineering, Chemical engineering, 0202 electrical engineering, electronic engineering, information engineering, Guaiacol, 0204 chemical engineering, ZSM-5, Selectivity, Mesoporous material, Hydrodeoxygenation, Incipient wetness impregnation
Abstract

Hierarchical ZSM-5 with mesopores were derived from seed directing crystalline process. The efficient encapsulation of nickel metal was achieved by a simple incipient wetness impregnation method, and a stable Ni/hierarchical ZSM-5 hydrodeoxygenation (HDO) catalyst was fabricated. The synthesized catalysts were characterized by XRD, N2-adsorption, FTIR, H2-TPR, NH3-TPD and TEM and were further tested for the hydrodeoxygenation of bio-derived guaiacol. Nickel particle size of about 6 nm and strong metal-support interaction were found for Ni/H-Z5 catalysts. It was discovered that the hydrodeoxygenation activity of the catalyst can be greatly improved by mesopores and strong acid sites. The reaction pathways were carefully studied to elucidate the effect of mesopores and acid sites. The Ni/ZSM-5 catalyst can be recycled seven times without loss of its initial selectivity.

Published
2020

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