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Issue 43, 2012
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Acid–base bi-functionalized, large-pored mesoporous silicananoparticles for cooperative catalysis of one-pot cellulose-to-HMF conversion

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Abstract

Mesoporous silica nanoparticles (MSNs) with large pore size around 30 nm were synthesized and functionalized with acid (SO3H), base (NH2) and both acid–base (SO3H and NH2) functional groups (namely, LPMSN-SO3H, LPMSN-NH2 and LPMSN-both, respectively). These functionalized LPMSN nanomaterials were then used as heterogeneous solid catalysts for one-pot conversion of cellulose to 5-hydroxymethylfurfural (HMF) in an ionic liquid (i.e., [EMIM]Cl) system. In general, cellulosic conversion involves three main reactions: (1) cellobiose-to-glucose depolymerization, (2) glucose-to-fructose isomerization, and (3) fructose-to-HMF dehydration, and each reaction needs an acid, base, and catalyst, respectively. Therefore, in order to understand the role of catalysts in each step, we applied the synthesized LPMSN-SO3H, LPMSN-NH2 and LPMSN-both catalysts in the reactions using cellulose, cellobiose, glucose and fructose as starting materials. Results show that LPMSN-SO3H and LPMSN-NH2 could increase the yield of HMF converted from the reactions that need acid and base catalysts, respectively. In addition, LPMSN-SO3H and LPMSN-both catalysts are found to be useful for one-pot cellulose-to-HMF conversion with an enhanced HMF yield.

Graphical abstract: Acid–base bi-functionalized, large-pored mesoporous silica nanoparticles for cooperative catalysis of one-pot cellulose-to-HMF conversion

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Supplementary files

Article information


Submitted
10 Aug 2012
Accepted
18 Sep 2012
First published
24 Sep 2012

J. Mater. Chem., 2012,22, 23181-23185
Article type
Paper

Acid–base bi-functionalized, large-pored mesoporous silica nanoparticles for cooperative catalysis of one-pot cellulose-to-HMF conversion

W. Peng, Y. Lee, C. Wu and K. C.-W. Wu, J. Mater. Chem., 2012, 22, 23181
DOI: 10.1039/C2JM35391A

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