Optimizing the aromatic yield and distribution from catalytic fast pyrolysis of biomass over ZSM-5
- Optimizing the aromatic yield and distribution from catalytic fast pyrolysis of biomass over ZSM-5
- Andrew J. Foster; 제정호; Yu-Ting Cheng; George W. Huber; Raul F. Lobo
- ZSM-5; Zeolite; Catalyst; Biomass; Pyrolysis
- Issue Date
- Applied catalysis A, General
- VOL 423-424, 154-161
- The conversion of glucose, furan and maple wood has been investigated over different types of ZSM-5
catalyst in semi-batch and fixed-bed reactors. The aromatic yield from glucose conversion goes through
a maximum as a function of the framework silica-to-alumina ratio (SAR) of ZSM-5 with an optimum at
SAR = 30. This suggests that the concentration of acid sites inside the zeolite is critical for maximizing
aromatic yield. Creating hierarchical mesopores within the zeolite slightly increased of coke formation
and decreased the formation of the monocyclic aromatics. Mesoporous ZSM-5 was also observed to favor
the production of larger alkylated monoaromatics. The selective removal of external acid sites from the
ZSM-5 catalysts only slightly increased the catalyst activity but also decreased the selectivity to the desired aromatic products.
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