| 光谱学与光谱分析 |
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| Catalytic Liquefaction of Corn Stalk under Atomosphere Prssure and the Analysis of Liquefaction Products |
| ZHANG Juan1, LIU Hai-tang1, 2, LIU Zhong1*, JIANG Qi-fan1 |
1. Tianjin Key Lab of Pulp & Paper, Tianjin University of Science & Technology, Tianjin 300457, China
2. State Key Lab of Pulp & Paper Engineering, South China University of Technology, Guangzhou 510641, China |
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Abstract With concentrated phosphoric acid as catalyst and various organic solvents as liquefying agents, corn stalk powder was liquefied into bio-oil in an autoclave, under the condition of 170 ℃. Analysis was conducted to throw light on the liquefying effects of three different agents; they are glycerol triacetate with ethylene carbonate, glycerol with ethylene carbonate and polyethylene glycol with ethylene carbonate(6∶1 ω/ω), and the properties of the biomass liquefaction oil products. FT-IR was applied to examine raw material and residues, whose chemical compositions were further analyzed with the use of GC-MS. The results of experiments indicated that the liquefaction yield of polyethylene glycol was 97.84%, the yield of glycerol triacetate was 80.20%, the yield of glycerol were36.97%. FT-IR analysis showed that the functional groups of cellulose, hemicelluloses and lignin was disappeared and liquefaction is best when polyethylene glycol with ethylene carbonate was used as the liquefaction agent. GC-MS analysis showed that the oil composition produced in this way is complex, contains organic acids and ketones, alcohols and ethers, aromatic, sugars and esters compounds.
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Received: 2015-06-10
Accepted: 2015-11-08
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Corresponding Authors:
LIU Zhong
E-mail: mglz@tust.edu.cn
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