Isosorbide synthesis from cellulose with an efficient and recyclable ruthenium catalyst

Juha Keskiväli, Sari Rautiainen, Mikko Heikkilä, Teemu T.T. Myllymäki, Jaakko Pekka Karjalainen, Kalle Lagerblom, Marianna Kemell, Marko Vehkamäki, Kristoffer Meinander, Timo Repo*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)4563-4570
Number of pages8
JournalGreen Chemistry
Volume19
Issue number19
DOIs
Publication statusPublished - 2017
MoE publication typeA1 Journal article-refereed

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