Abstract
Catalytic hydrodeoxygenation (HDO) of lignin-derived phenols which are the lowest reactive chemical compounds in biomass pyrolysis oils has been reviewed. The hydrodeoxygenation (HDO) catalysts have been discussed including traditional HDO catalysts such as CoMo/Al2O3 and NiMo/Al2O3 catalysts and transition metal catalysts (noble metals). The mechanism of HDO of lignin-derived phenols was analyzed on the basis of different model compounds. The kinetics of HDO of different lignin-derived model compounds has been investigated. The diversity of bio-oils leads to the complexities of HDO kinetics. The techno-economic analysis indicates that a series of major technical and economical efforts still have to be investigated in details before scaling up the HDO of lignin-derived phenols in existed refinery infrastructure. Examples of future investigation of HDO include significant challenges of improving catalysts and optimum operation conditions, further understanding of kinetics of complex bio-oils, and the availability of sustainable and cost-effective hydrogen source.
Original language | English (US) |
---|---|
Pages (from-to) | 470-477 |
Number of pages | 8 |
Journal | Bioresource Technology |
Volume | 124 |
DOIs | |
State | Published - Nov 2012 |
Bibliographical note
Funding Information:This work was supported in partial by the Office of Research and Department of Biological Systems Engineering at Washington State University .
Keywords
- Catalytic hydrodeoxygenation (HDO)
- Kinetics
- Lignin-derived phenols
- Mechanism
- Pyrolysis