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

doi:10.11949/j.issn.0438-1157.20160030

Abstract

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

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

CLC Number:

TQ028.8

WANG Yang, GONG Xun, LENG Erwei, ZHANG Biao, HE Jianqing, XU Minghou. Quantitative analysis of typical anhydro-sugars obtained during pyrolysis of cellulose based on benzoylation[J]. CIESC Journal, 2016, 67(6): 2519-2524.

王阳, 龚勋, 冷尔唯, 张彪, 何剑青, 徐明厚. 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[J]. 化工学报, 2016, 67(6): 2519-2524.

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