Comparative study of conventional and microwave-assisted liquefaction of corn stover in ethylene glycol
Comparative study of conventional and microwave-assisted liquefaction of corn stover in ethylene glycol
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DOI：
10.1016/j.indcrop.2011.05.024
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发表时间：
2011-11-01
影响因子：
5.9
通讯作者：
Zhao, Yanyan
中科院分区：
文献类型：
--
作者：
Xiao, Weihua;Han, Lujia;Zhao, Yanyan
以乙二醇（EG）为液化剂，硫酸为催化剂，对玉米秸秆的常规液化和微波辅助液化进行了对比研究。与常规加热相比，微波显著提高了液化程度和速率。采用凝胶渗透色谱（GPC）、傅立叶变换红外光谱（FTIR）对两种方法的液化产物和残渣进行了分析。X射线衍射（XRD）和扫描电子显微镜（SEM）。GPC结果表明，常规加热液化产物的分子量明显大于微波辅助液化产物。红外光谱分析表明，两种方法液化产物中羟基和羰基含量存在显著差异。微波辅助液化残渣主要由矿物质组成。通过扫描电镜观察，微波液化残渣表面出现了许多颗粒。(C)2011 Elsevier B.V.保留所有权利。
A comparative study on conventional and microwave-assisted liquefaction of corn stover has been carried out using ethylene glycol (EG) as liquefacient and sulfuric acid as catalyst. Microwave dramatically increased the liquefaction extent and rate compared to conventional heating. The liquefied products and residues in both methods have been investigated using gel permeation chromatography (GPC), Fourier transform infrared (FTIR). X-ray diffraction (XRD), and scanning electron microscope (SEM). The GPC results show that the molecular weight of liquefied products with conventional heating is significantly greater than those of microwave-assisted liquefaction. The FTIR spectra indicate that there are significant differences in the hydroxyl and carbonyl group contents in the liquefied products with the two methods. The residue from microwave-assisted liquefaction mainly consisted of mineral matter. Many granules appeared on the surface of microwave liquefied residue according to SEM observation. (C) 2011 Elsevier B.V. All rights reserved.