Direct microwave-assisted hydrothermal depolymerization of cellulose

Jiajun Fan; M. De bruyn; V.L. Budarin; M.J. Gronnow; P.S. Shuttleworth; S. Breeden; D.J. Macquarrie; J.H. Clark

doi:10.1021/ja4056273

Direct microwave-assisted hydrothermal depolymerization of cellulose

Jiajun Fan, M. De bruyn, V.L. Budarin, M.J. Gronnow, P.S. Shuttleworth, S. Breeden, D.J. Macquarrie, J.H. Clark

Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

A systematic investigation of the interaction of microwave irradiation with microcrystalline cellulose has been carried out, covering a broad temperature range (150 → 270°C). A variety of analytical techniques (e.g., HPLC, C 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 CHOH 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 ∼75% while the highest glucose yield obtained was 21%.

Original language	English
Pages (from-to)	11728-11731
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	135
Issue number	32
DOIs	https://doi.org/10.1021/ja4056273
Publication status	Published - 14 Aug 2013

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title = "Direct microwave-assisted hydrothermal depolymerization of cellulose",

abstract = "A systematic investigation of the interaction of microwave irradiation with microcrystalline cellulose has been carried out, covering a broad temperature range (150 → 270°C). A variety of analytical techniques (e.g., HPLC, C 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 CHOH 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 ∼75% while the highest glucose yield obtained was 21%.",

author = "Jiajun Fan and {De bruyn}, M. and V.L. Budarin and M.J. Gronnow and P.S. Shuttleworth and S. Breeden and D.J. Macquarrie and J.H. Clark",

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T1 - Direct microwave-assisted hydrothermal depolymerization of cellulose

AU - Fan, Jiajun

AU - De bruyn, M.

AU - Budarin, V.L.

AU - Gronnow, M.J.

AU - Shuttleworth, P.S.

AU - Breeden, S.

AU - Macquarrie, D.J.

AU - Clark, J.H.

PY - 2013/8/14

Y1 - 2013/8/14

N2 - A systematic investigation of the interaction of microwave irradiation with microcrystalline cellulose has been carried out, covering a broad temperature range (150 → 270°C). A variety of analytical techniques (e.g., HPLC, C 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 CHOH 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 ∼75% while the highest glucose yield obtained was 21%.

AB - A systematic investigation of the interaction of microwave irradiation with microcrystalline cellulose has been carried out, covering a broad temperature range (150 → 270°C). A variety of analytical techniques (e.g., HPLC, C 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 CHOH 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 ∼75% while the highest glucose yield obtained was 21%.

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JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

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IS - 32

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Direct microwave-assisted hydrothermal depolymerization of cellulose

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