Isosorbide synthesis from cellulose with an efficient and recyclable ruthenium catalyst
| Autor: | Teemu T. T. Myllymäki, Marko Vehkamäki, Jaakko Pekka Karjalainen, Kristoffer Meinander, Timo Repo, Sari Rautiainen, Juha Keskiväli, Kalle Lagerblom, Marianna Kemell, Mikko Heikkilä |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
inorganic chemicals
Isosorbide 010405 organic chemistry 010402 general chemistry 01 natural sciences Pollution 0104 chemical sciences Catalysis Microcrystalline cellulose chemistry.chemical_compound chemistry Cellulosic ethanol medicine Environmental Chemistry Organic chemistry Lignin Cellulose Dissolving pulp ta116 medicine.drug Activated carbon |
| Zdroj: | GREEN CHEMISTRY. 19(19):4563-4570 |
| ISSN: | 1463-9262 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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