Journal article
Aromatic hydrocarbons production from packed-bed catalysis coupled with microwave pyrolysis of Douglas fir sawdust pellets
RSC advances, Vol.3(34), pp.14609-14615
2013
Handle:
https://hdl.handle.net/2376/108210
Abstract
The direct catalytic cracking of biomass pyrolysis vapour into aromatics derived from Douglas fir sawdust pellets was tested using an upfront microwave pyrolysis process coupled with a packed-bed catalysis process using a ZSM-5 Zeolite catalyst. A central composite experimental design (CCD) was used to optimize the bio-oil and syngas yields. The effects of temperature and inverse weight hourly space velocity (WHSV)−1 on the bio-oil composition were determined. The gas chromatography–mass spectrometry (GC-MS) analysis results showed that the bio-oil contained aromatic hydrocarbons. The aromatic hydrocarbons were enriched and became the most abundant compounds accounting for about 15–92.6% in upgraded bio-oils, depending on the catalytic pyrolysis conditions. The aromatic hydrocarbons were mainly composed of benzene, toluene, xylene, naphthalene, and their derivatives. When the effect of the reaction temperature on the bio-oil chemical compositions was analysed with a fixed (WHSV)−1 (0.048 h), we found that the aromatic hydrocarbons increased from 0.72% in raw bio-oil (no catalyst added) to around 92.6% when the catalysis temperature was 500 °C, clearly demonstrating that a high temperature with the ZSM-5 Zeolite catalyst favoured the production of aromatic hydrocarbons. At a lower temperature fixed at 375 °C, the aromatic hydrocarbon content was increased from 0.72% to 78.1% with a (WHSV)−1 increase from 0 to 0.075.
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Details
- Title
- Aromatic hydrocarbons production from packed-bed catalysis coupled with microwave pyrolysis of Douglas fir sawdust pellets
- Creators
- Lu WangHanwu LeiJohn LeeShulin ChenJuming TangBirgitte Ahring
- Publication Details
- RSC advances, Vol.3(34), pp.14609-14615
- Academic Unit
- Biological Systems Engineering, Department of
- Identifiers
- 99900582334701842
- Language
- English
- Resource Type
- Journal article