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Fir sawdust was mixed with microwave absorption medium(ionic liquid) in microwave radiation pyrolysis to get bio-oil and super-critical CO2 extraction was used to separate oil. Many technics were investigated, result shows that the optimal technics are: ratio of ionic liquid to fir sawdust is 4:3, reaction temperature is 200degC, reaction time is 30 minutes, yield of bio-oil can reach 21.3%. GC/MS...
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