Ru@hyperbranched Polymer for Hydrogenation of Levulinic Acid to Gamma-Valerolactone: The Role of the Catalyst Support

International Journal of Molecular Sciences

Nina V. Kuchkina¹  Zinaida B. Shifrina¹  Mariam G. Ezernitskaya¹  Svetlana A. Sorokina¹  Stepan P. Mikhailov²  Linda Zh. Nikoshvili²  Alexey V. Bykov²  Mikhail G. Sulman²  Alexander L. Vasiliev³  Andrey L. Golovin³ 

[1] A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov St., 119991 Moscow, Russia;Department of Biotechnology and Chemistry, Tver State Technical University, 22 A. Nikitina St., 170026 Tver, Russia;Federal Scientific Research Centre, Shubnikov Institute of Crystallography, “Crystallography and Photonics” of Russian Academy of Sciences, Leninsky Prospect, 59, 119333 Moscow, Russia;

关键词: levulinic acid;    gamma-valerolactone;    ruthenium nanoparticle;    hyperbranched polymer;    hydrogenation;    acid functionalization;   

DOI  :  10.3390/ijms23020799

来源: DOAJ

【 摘 要 】

Hydrogenation of levulinic acid (LA) obtained from cellulose biomass is a promising path for production of γ-valerolactone (GVL)—a component of biofuel. In this work, we developed Ru nanoparticle containing nanocomposites based on hyperbranched pyridylphenylene polymer, serving as multiligand and stabilizing matrix. The functionalization of the nanocomposite with sulfuric acid significantly enhances the activity of the catalyst in the selective hydrogenation of LA to GVL and allows the reaction to proceed under mild reaction conditions (100 °C, 2 MPa of H₂) in water and low catalyst loading (0.016 mol.%) with a quantitative yield of GVL and selectivity up to 100%. The catalysts were successfully reused four times without a significant loss of activity. A comprehensive physicochemical characterization of the catalysts allowed us to assess structure-property relationships and to uncover an important role of the polymeric support in the efficient GVL synthesis.

【 授权许可】

Unknown