化工学报 ›› 2016, Vol. 67 ›› Issue (6): 2519-2524.DOI: 10.11949/j.issn.0438-1157.20160030

• 能源和环境工程 • 上一篇    下一篇

基于苯甲酰化的纤维素热解过程中典型脱水糖的定量分析

王阳1, 龚勋1, 冷尔唯1, 张彪1, 何剑青2, 徐明厚1   

  1. 1. 华中科技大学煤燃烧国家重点实验室, 湖北 武汉 430074;
    2. 华中科技大学中欧清洁与可再生能源学院, 湖北 武汉 430074
  • 收稿日期:2016-01-08 修回日期:2016-02-26 出版日期:2016-06-05 发布日期:2016-06-05
  • 通讯作者: 龚勋
  • 基金资助:

    国家自然科学基金项目(51306062)。

Quantitative analysis of typical anhydro-sugars obtained during pyrolysis of cellulose based on benzoylation

WANG Yang1, GONG Xun1, LENG Erwei1, ZHANG Biao1, HE Jianqing2, XU Minghou1   

  1. 1. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China;
    2. Institution of Clean and Renewable Energy, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
  • Received:2016-01-08 Revised:2016-02-26 Online:2016-06-05 Published:2016-06-05
  • Supported by:

    supported by the National Natural Science Foundation of China (51306062).

摘要:

在固定床中对纤维素进行低温热解实验,采用苯甲酰化的方法,对收集的3种典型的脱水糖进行了深入研究。实验结果表明,基于苯甲酰化的HPLC-UV检测方法是一种快速、有效的糖类物质检测分析方法,满足纤维素热解产物中脱水糖的定量分析研究。纤维二聚糖和纤维三聚糖主要是通过纤维素随机断链形成的,而并非来源于左旋葡聚糖的二次聚合反应。聚合度越高的脱水糖在热解过程中更倾向于进一步反应形成其他产物。

关键词: 纤维素, 热解, 固定床, 苯甲酰化, 色谱, 脱水糖, 定量分析

Abstract:

A derivation method based on bezoylation was applied to quantitative analysis of three typical anhydro-sugars obtained from pyrolysis of cellulose on a fixed bed reactor. The experimental results showed that this precolumn HPLC derivatization was proved to be an efficient and accurate method for the rapid determination of anhydro-sugars. Cellobiosan and cellotriosan may be produced via thermal cleavage of glycosidic bonds during cellulose pyrolysis rather than secondary polymerization of the levoglucosan. The higher DPs anhydro-sugars had less thermal stability and they were more susceptible to decomposition at the higher temperature.

Key words: cellulose, pyrolysis, fixed-bed, benzoylation, chromatography, anhydro-sugars, quantitative analysis

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