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Issue 24, 2012
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One-pot depolymerization of cellulose into glucose and levulinic acid by heteropolyacid ionic liquid catalysis

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Abstract

A series of heteropolyacid (HPA) ionic liquids [C4H6N2(CH2)3SO3H]3−nHnPW12O40 ([MIMPSH]nH3−nPW12O40, n = 1, 2 3, abbreviated as [MIMPSH]nH3−nPW) was used to catalyze one-pot depolymerization of cellulose into glucose. Their performances were much better than those of the previously reported HPAs, such as H3PW12O40, Cs2.5H0.5PW12O40. Besides cellulose, the HPA ionic liquids were able to catalyze the conversion of sucrose and starch into glucose. In addition, one-pot synthesis of levulinic acid (LA) directly from cellulose was realized using these HPA ionic liquid catalysts in a water–methyl isobutyl ketone (MIBK) biphasic system. The separation of the products and catalysts was easy, and the retrieved [MIMPSH]nH3−nPW could be repeatedly used without appreciable loss of performance.

Graphical abstract: One-pot depolymerization of cellulose into glucose and levulinic acid by heteropolyacid ionic liquid catalysis

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Publication details

The article was received on 07 Sep 2011, accepted on 30 Jul 2012 and first published on 31 Jul 2012


Article type: Paper
DOI: 10.1039/C2RA01328B
RSC Adv., 2012,2, 9058-9065

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    One-pot depolymerization of cellulose into glucose and levulinic acid by heteropolyacid ionic liquid catalysis

    Z. Sun, M. Cheng, H. Li, T. Shi, M. Yuan, X. Wang and Z. Jiang, RSC Adv., 2012, 2, 9058
    DOI: 10.1039/C2RA01328B

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