Mn/ZSM-5 participation in the degradation of cellulose under phosphoric acid media
Mn/ZSM-5 participation in the degradation of cellulose under phosphoric acid media
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Mn/ZSM-5参与磷酸介质下纤维素的降解
DOI:
10.1016/j.polymdegradstab.2011.02.007
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发表时间:
2011-05
影响因子:
5.9
通讯作者:
Li, Gang
中科院分区:
文献类型:
--
作者:
Zhang, Song-Mei;Yang, Fang;Chen, Yang;Li, Gang
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 H2O2and 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.
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DOI:
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