纤维素/生物质热解生成脱水糖衍生物的机理以及选择性制备技术研究进展

doi:10.16085/j.issn.1000-6613.2016.05.018

摘要/Abstract

摘要： 纤维素/生物质快速热解过程中会形成多种脱水糖衍生物,包括左旋葡萄糖酮(LGO)、1,4:3,6-二脱水-α-D-吡喃葡萄糖(DGP)、1,5-脱水-4-脱氧-D-甘油基-己-1-烯-3-阿洛酮糖(APP)和1-羟基-3,6-二氧二环[3.2.1]辛-2-酮(LAC)等,这些脱水糖衍生物均具有很高的化工应用价值。然而在常规热解过程中,这些产物的产率都非常低,使得后续的分离提取十分困难;而在适当的催化热解条件下,其产率可以大幅提升,从而实现目标产物的选择性制备。基于此,本文首先概述了国内外学者对这4种脱水糖衍生物热解生成机理的实验以及密度泛函理论研究;随后总结了针对LGO和LAC这两种产物,现阶段已开发的选择性热解制备技术,包括最佳的催化剂以及催化热解反应条件;最后提出了未来在脱水糖衍生物生成机理以及选择性制备技术方面需要开展的工作。

关键词: 纤维素, 生物质, 热解, 选择性

Abstract: During the fast pyrolysis of cellulose/biomass, various anhydrosugar derivatives are produced, including levoglucosenone (LGO), 1, 4:3, 6-dianhydro-α-D-glucopyranose (DGP), 1, 5-anhydro-4-deoxy-D-glycero-hex-1-en-3-ulose (APP) and 1-hydroxy-3, 6-dioxabicyclo[3.2.1]octan-2-one (LAC). The four anhydrosugar derivatives all have high application values in chemical industry. However, for the conventional pyrolysis process, the yields of them are very low, which makes their separation very difficult. Whereas, under proper catalytic pyrolysis conditions, the yields can be greatly improved, so as to achieve their selective production. This paper firstly summarizes the experimental and theoretical studies on the formation mechanism of the four anhydrosugar derivatives, and then describes the selective production techniques of the LGO and LAC, including the best catalysts and the catalytic pyrolysis reaction conditions. Finally, future researches are proposed to disclose the formation mechanism and optimize the selective production techniques of the anhydrosugar derivatives.

Key words: cellulose, biomass, pyrolysis, selectivity

中图分类号:

董晓晨, 叶小宁, 张智博, 胡斌, 陆强, 董长青. 纤维素/生物质热解生成脱水糖衍生物的机理以及选择性制备技术研究进展[J]. 化工进展, 2016, 35(05): 1387-1395.

DONG Xiaochen, YE Xiaoning, ZHANG Zhibo, HU Bin, LU Qiang, DONG Changqing. Progress in formation mechanism and selective production of anhydrosugar derivatives from pyrolysis of cellulose/biomass[J]. Chemical Industry and Engineering Progree, 2016, 35(05): 1387-1395.

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