期刊
CHEMICAL ENGINEERING SCIENCE
卷 178, 期 -, 页码 248-259出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2017.12.048
关键词
Fast pyrolysis oil; Hydrodeoxygenation; Upgrading; Nickel; Cobalt; Phosphides
资金
- BioFuelNet Canada
- NSERC Strategic Research Network (Lignoworks) for Biomaterials and Chemicals
- FPInnovations
- NSERC Discovery Grant
- NSERC/FPInnovations Industrial Research Chair program
- ORF-RE grant in Forest Biorefine
Catalytic hydrodeoxygenation (HDO) has been considered as a promising technical route to upgrade fast pyrolysis oil to liquid transportation fuels. In this work, a series of active and inexpensive catalysts were synthesized for bio-oil HDO, i.e., activated carbon (AC)-supported nickel phosphide and cobalt phosphide catalysts, with a metal/P molar ratio varying from 5/2, 3/2, 1/1, 1/2, 1/3. For comparison, AC-support pure metal catalysts without P were also prepared. Effects of phosphorus content on HDO performance of the catalysts were investigated on a 100 mL bench-scale reactor system using a wood-derived pyrolysis oil at 300 degrees C and initial hydrogen pressure of 50 bar for 3 h. The results showed that the properties of the upgraded bio-oils were greatly affected by the phosphorus content in both Ni and Co catalysts. The best performance seemed to be achieved with the catalysts at a metal/P molar ratio of about 3/2. Moreover, 0.5 wt% of Ru was further added to the catalysts at a metal/P molar ratio of 3/2 and to the pure metal catalysts. The addition of a small amount of Ru was found to markedly decrease the relative molecular weight of the upgraded bio-oils, and achieved high quality bio-oil products similar to that obtained with an expensive commercially available 5 wt% Ru/C catalyst. (C) 2017 Elsevier Ltd. All rights reserved.
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