Hydrogenation of levoglucosenone to renewable chemicals
- 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
Here, we have studied the hydrogenation of levoglucosenone (LGO) to dihydrolevoglucosenone (Cyrene), levoglucosanol (Lgol), and tetrahydrofurandimethanol (THFDM) and elucidated the reaction network over supported palladium catalysts. At low temperature (40 °C) over a Pd/Al2O3 catalyst, LGO is selectively hydrogenated to Cyrene. At intermediate temperatures (100 °C) over a Pd/Al2O3 catalyst, Cyrene is selectively hydrogenated to Lgol, with an excess of the exo-Lgol isomer produced over the endo-Lgol isomer. At higher temperatures (150 °C) over a bifunctional Pd/SiO2–Al2O3 catalyst, Lgol is converted to THFDM in 58% selectivity, with 78% overall selectivity to 1,6-hexanediol precursors. The ratio of cis-THFDM relative to trans-THFDM is approximately 2.5, and this ratio is independent of the Lgol feed stereoisomer ratio. Finally, tetrahydropyran-2-methanol-5-ketone (THP2M5one) and tetrahydropyran-2-methanol-5-hydroxyl (THP2M5H) are side-products of Lgol hydrogenolysis, but neither of these species are precursors to THFDM.
- Research Organization:
- Univ. of Wisconsin, Madison, WI (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- Contributing Organization:
- University of Wisconsin-Madison Department of Chemistry
- Grant/Contract Number:
- EE0006878
- OSTI ID:
- 1477850
- Journal Information:
- Green Chemistry, Journal Name: Green Chemistry Journal Issue: 5 Vol. 19; ISSN GRCHFJ; ISSN 1463-9262
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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