Isosorbide synthesis from cellulose with an efficient and recyclable ruthenium catalyst
Research output: Contribution to journal › Article › Scientific › peer-review
- University of Helsinki
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.
|Number of pages||8|
|Publication status||Published - 2017|
|MoE publication type||A1 Journal article-refereed|