Abstract
Microwave assisted catalytic pyrolysis was investigated to convert Douglas fir pellets to bio-oils by a ZSM-5 zeolite catalyst. A central composite experimental design (CCD) was used to optimize the catalytic pyrolysis process. The effects of reaction time, temperature and catalyst to biomass ratio on the bio-oil, syngas, and biochar yields were determined. GC/MS analysis results showed that the bio-oil contained a series of important and useful chemical compounds. Phenols, guaiacols, and aromatic hydrocarbons were the most abundant compounds which were about 50-82% in bio-oil depending on the pyrolysis conditions. Comparison between the bio-oils from microwave pyrolysis with and without catalyst showed that the catalyst increased the content of aromatic hydrocarbons and phenols. A reaction pathway was proposed for microwave assisted catalyst pyrolysis of Douglas fir pellets.
Original language | English (US) |
---|---|
Pages (from-to) | 194-200 |
Number of pages | 7 |
Journal | Journal of Analytical and Applied Pyrolysis |
Volume | 98 |
DOIs | |
State | Published - Nov 2012 |
Bibliographical note
Funding Information:This work was supported in partial by the Office of Research at Washington State University .
Keywords
- Aromatics
- Catalytic pyrolysis
- Douglas fir pellet
- GC/MS
- Microwave
- Phenols
- ZSM-5