Catalytic production of hexane-1,2,5,6-tetrol from bio-renewable levoglucosanol in water: effect of metal and acid sites on (stereo)-selectivity
- Univ. of Wisconsin, Madison, WI (United States). Department of Chemical and Biological Engineering; University of Wisconsin-Madison Department of Chemical and Biological Engineering
- Univ. of Wisconsin, Madison, WI (United States). Department of Chemical and Biological Engineering ; Utrecht University (The Netherlands). Faculty of Science, Debye Institute for Nanomaterials Science
- Univ. of Wisconsin, Madison, WI (United States). Department of Chemical and Biological Engineering
- Utrecht University (The Netherlands). Faculty of Science, Debye Institute for Nanomaterials Science
In this article, we report on a new route to produce hexane-1,2,5,6-tetrol (tetrol) from cellulose-derived levoglucosanol (lgol). We investigate the reaction intermediates formed over metal and acid catalysts, and propose a reaction network for this process. Lgol is converted to tetrol in up to 90% yield over a bifunctional Pt/SiO2–Al2O3 catalyst at 150 °C. High tetrol yields are maintained at lgol concentrations of up to 21 wt% in water. threo- and erythro-lgol first undergo hydrolysis to 3,4-dideoxymannose (DDM) and 3,4-dideoxyglucose (DDG), respectively. This reaction can be carried out selectively over an Amberlyst 70 acid catalyst at a temperature of 100 °C. At a higher temperature of 150 °C with no added catalyst, DDM and DDG undergo aldose–ketose isomerization to 3,4-dideoxyfructose (DDF). DDM is hydrogenated to cis-tetrol over a Pt/SiO2 catalyst, while DDG is hydrogenated to trans-tetrol. Formation of DDF erases the stereocenter at the C2 position of lgol, and hydrogenation of DDF produces a nearly 1:1 mixture of cis- and trans-tetrol. Lastly, this catalytic approach to produce tetrol from biomass opens the door to sustainable chemicals derived from tetrol.
- Research Organization:
- Univ. of Wisconsin, Madison, WI (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Bioenergy Technologies Office (EE-3B)
- Contributing Organization:
- University of Wisconsin-Madison Department of Chemistry; University of Wisconsin-Madison School of Pharmacy Analytical Instrumentation Center; Circa Group
- Grant/Contract Number:
- EE0006878
- OSTI ID:
- 1477860
- Alternate ID(s):
- OSTI ID: 1471254
- Journal Information:
- Green Chemistry, Journal Name: Green Chemistry Journal Issue: 19 Vol. 20; ISSN GRCHFJ; ISSN 1463-9262
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Catalytic hydrogenation of dihydrolevoglucosenone to levoglucosanol with a hydrotalcite/mixed oxide copper catalyst
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journal | January 2019 |
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