Direct Microwave-Assisted Hydrothermal Depolymerization of Cellulose

被引：197

作者：

Fan, Jiajun ^{[1
]}

De Bruyn, Mario ^{[1
]}

Budarin, Vitaliy L. ^{[1
]}

Gronnow, Mark J. ^{[1
]}

Shuttleworth, Peter S. ^{[2
]}

Breeden, Simon ^{[1
]}

Macquarrie, Duncan J. ^{[1
]}

Clark, James H. ^{[1
]}

机构：

[1] Univ York, Dept Chem, Green Chem Ctr Excellence, York YO10 5DD, N Yorkshire, England

[2] CSIC, Inst Ciencia & Tecnol Polimeros, Dept Fis Polimeros Elastomeros & Aplicac Energet, E-28006 Madrid, Spain

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2013年 / 135卷 / 32期

关键词：

ORGANIC-SYNTHESIS; SOLID ACID; PYROLYSIS; HYDROLYSIS; CONVERSION; BIOMASS; LEVOGLUCOSAN; CATALYSTS; BETA;

D O I：

10.1021/ja4056273

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A systematic investigation of the interaction of microwave irradiation with microcrystalline cellulose has been carried out, covering a broad temperature range (150 -> 270 degrees C). A variety of analytical techniques (e.g., HPLC, C-13 NMR, FTIR, CHN analysis, hydrogen-deuterium exchange) allowed for the analysis of the obtained liquid and solid products. Based on these results a mechanism of cellulose interaction with microwaves is proposed. Thereby the degree of freedom of the cellulose enclosed CH2OH groups was found to be crucial. This mechanism allows for the explanation of the different experimental observations such as high efficiency of microwave treatment; the dependence of the selectivity/yield of glucose on the applied microwave density; the observed high glucose to HMF ratio; and the influence of the degree of cellulose crystallinity on the results of the hydrolysis process. The highest selectivity toward glucose was found to be similar to 75% while the highest glucose yield obtained was 21%.

引用

页码：11728 / 11731

页数：4

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