Qualitative analysis of products formed during the acid catalyzed liquefaction of bagasse in ethylene glycol.
Qualitative analysis of products formed during the acid catalyzed liquefaction of bagasse in ethylene glycol.
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DOI：
10.1016/j.biortech.2006.03.029
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发表时间：
2007-05
影响因子：
11.4
通讯作者：
Ting Zhang;Yujie Zhou;De‐hua Liu;L. Petrus
中科院分区：
文献类型：
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作者：
Ting Zhang;Yujie Zhou;De‐hua Liu;L. Petrus
在190°C下，在大气压下，在硫酸催化下，将甘蔗渣在乙二醇（EG）中液化。在将所获得的粗产物分离成三个级分之后分析所获得的粗产物的组成：水溶性级分、丙酮溶性级分和残余物。红外光谱、凝胶渗透色谱和元素分析表明，残渣中主要是未溶解的纤维素和木质素衍生物，丙酮可溶部分主要是高分子量的木质素降解产物。水溶性组分经GC-MS和HPLC分析，主要为EG、二甘醇、EG衍生物、乙二醇、醇、醛、酮、酚类化合物，特别是甲酸、乙酰丙酸、乙酸、草酸、2-羟基丁酸等酸及其酯类化合物。残渣和丙酮溶出物的高温热值（HHV）高于蔗渣。结果表明，该工艺可以得到一些有用的化学品和生物燃料。
Bagasse was liquefied in ethylene glycol (EG) catalyzed by sulfuric acid at 190°C under atmospheric pressure. The compositions of the crude products obtained were analyzed after separating them into three fractions: a water-soluble fraction, an acetone-soluble fraction and a residue. With infrared, gel permeation chromatography and elemental analyses, the residue mainly included undissolved cellulose and lignin derivatives and the acetone-soluble fraction mainly contained lignin degradation products with high molecular weights. The water-soluble fraction, after further analyzed by GC-MS and HPLC, showed EG, diethylene glycol, EG derivatives, saccharides, alcohols, aldehydes, ketones, phenols, especially some acids such as formic acid, levulinic acid, acetic acid, oxalic acid and 2-hydroxy-butyric acid and their esters. The Higher Heating Value (HHV) of the residue and the acetone-soluble fractions were higher than that of bagasse. The results showed that some useful chemicals and biofuels could be obtained by this process.