Mn/ZSM-5 participation in the degradation of cellulose under phosphoric acid media

被引：30

作者：

Chen, Yang ^{[1
]}

Li, Gang ^{[1
]}

Yang, Fang ^{[1
]}

Zhang, Song-Mel ^{[1
]}

机构：

[1] Hebei Univ Technol, Sch Chem Engn & Technol, Tianjin 300130, Peoples R China

来源：

POLYMER DEGRADATION AND STABILITY | 2011年 / 96卷 / 05期

基金：

美国国家科学基金会;

关键词：

Cellulose degradation; Fenton-like reagent; Catalyst Mn/ZSM-5; Phosphoric acid; HYDROLYTIC DEGRADATION; HETEROGENEOUS FENTON; OXIDATION; WATER; PEROXIDATION; EFFICIENT; CATALYST; FTIR; NMR;

D O I：

10.1016/j.polymdegradstab.2011.02.007

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The degradation reactions of cellulose under a combination of heterogeneous Fenton-like reagent with catalyst Mn/ZSM-5 and phosphoric acid media have been investigated. Phosphoric acid solution was selected as the reactive medium for the degradation of cellulose due to its good ability to destroy inter- and intra-molecular hydrogen bond so as to promote cellulose activation. The Fenton-like system, composing of H2O2 and Mn/ZSM-5 in combination with phosphoric acid, can effectively depolymerize cellulose to soluble sugars and partly degraded cellulose with much lower degree of polymerization. Small molecular products, 5-hydroxymethyl furfural and levulinic acid were extracted from the reaction solution. The performance of the catalyst Mn/ZSM-5 and the effect of reaction factors on the molar yield of 5-hydroxymethyl furfural were investigated. A three-step degradation scheme reflecting the main pathways of cellulose degradation in the reaction is proposed. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：863 / 869

页数：7

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