|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ПсковГУ |
||
Selective levulinic acid hydrogenation in presence of hybrid dendrimer-based catalysts. Part II: Bimetallic macromolecular chemistry and physicsстатья
- Авторы: Maximov A.L., Zolotukhina A.V., Mamedli A.A., Tairova S., Karahanov E.A.
- Журнал: Macromolecular Chemistry and Physics
- Год издания: 2024
- Издательство: John Wiley & Sons Ltd.
- Местоположение издательства: United Kingdom
- Номер статьи: 2400194
- DOI: 10.1002/macp.202400194
- Аннотация: Various heterogeneous bimetallic Ru, Rh, Pd and/or Cu-containing catalysts, based on dendrimer-silica mesoporous hybrid supports, are successfully synthesized, using co-complexation method, and characterized by transmission electron microscopy and X-ray photoelectron spectroscopy. The catalysts obtained are examined in the aqueous hydrogenation of levulinic acid and its esters to γ-valerolactone. The catalyst activity and selectivity on γ-valerolactone are strongly dependent on the nature and ratio of metal used, and PdRu bimetallic catalysts are found to be the most effective. Quantitative or near to quantitative yields of γ-valerolactone can be achieved for all PdRu catalysts and substrates tested within 2 hours, with maximum TOF value of 4500 h−1. Such high efficiency is provided by especial nanoparticle structure, consisted of Pd core and RuPd shell, and synergistic effect between Ru and Pd in alloy.
- Добавил в систему: Захарян Елена Михайловна