期刊
BIORESOURCE TECHNOLOGY
卷 103, 期 1, 页码 466-469出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.10.010
关键词
Pyrolysis; Sulfuric acid; Bagasse; Levoglucosenone; Microcrystalline cellulose
资金
- Fundamental Research Funds for the Central Universities
- National Basic Research Program of China [2012CB215306]
- National Natural Science Foundation of China [50930006]
- NSFC-Guangdong Province [U0834005]
Fast pyrolysis of bagasse pretreated by sulfuric acid was conducted in a fixed bed reactor to prepare levoglucosenone (LGO), a very important anhydrosugar for organic synthesis. The liquid yield and LGO yield were studied at temperatures from 240 to 350 degrees C and sulfuric acid loadings from 0.92 to 7.10 wt.%. An optimal LGO yield of 7.58 wt.% was obtained at 270 degrees C with a sulfuric acid pretreatment concentration of 0.05 M (corresponding to 4.28 wt.% sulfuric acid loading). For comparison, microcrystalline cellulose pretreated by 0.05 M sulfuric acid solution was pyrolyzed at temperature from 270 degrees C to 320 degrees C, and bagasse loaded with 3-5 wt.% phosphoric acid was pyrolyzed at temperature from 270 degrees C to 350 degrees C. The highest yield of LGO from bagasse was 30% higher than that from microcrystalline cellulose, and treatment with sulfuric acid allowed a 21% higher yield than treatment with phosphoric acid. (C) 2011 Elsevier Ltd. All rights reserved.
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