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Isosorbide synthesis from cellulose with an efficient and recyclable ruthenium catalyst

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Abstract

Herein, we describe an efficient two-step pathway for isosorbide synthesis from cellulose with the use of new recyclable Ru-catalysts. We show that the oxidative and sulfonation treatments of the new Ru-catalysts increase the acidity and the hydrophilicity of the activated carbon support material, thus reducing the catalyst fouling caused by the build-up of insoluble products. Accordingly, the new Ru-catalysts are more resilient towards lignin containing cellulose than a commercial Ru/C catalyst, and the best Ru-catalyst maintains its high catalytic activity in four consecutive runs with dissolving pulp, microcrystalline cellulose and even with residual lignin containing bagasse pulp. Overall, our two-step approach provides isosorbide in high yields of 56–57 mol% (49–50 wt% of the substrate) from the cellulosic substrates.

Graphical abstract: Isosorbide synthesis from cellulose with an efficient and recyclable ruthenium catalyst

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Publication details

The article was received on 19 Jun 2017, accepted on 10 Aug 2017 and first published on 10 Aug 2017


Article type: Paper
DOI: 10.1039/C7GC01821E
Citation: Green Chem., 2017, Advance Article
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    Isosorbide synthesis from cellulose with an efficient and recyclable ruthenium catalyst

    J. Keskiväli, S. Rautiainen, M. Heikkilä, T. T. T. Myllymäki, J. Karjalainen, K. Lagerblom, M. Kemell, M. Vehkamäki, K. Meinander and T. Repo, Green Chem., 2017, Advance Article , DOI: 10.1039/C7GC01821E

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