Novel aqueous-phase hydrogenation reaction of the key biorefinery platform chemical levulinic acid into γ-valerolactone employing highly active, selective and stable water-soluble ruthenium catalysts modified with nitrogen-containing ligands
| Autor: | Evangelos Bakeas, Georgios Papadogianakis, Chrysavgi Moustani, Eleni Anagnostopoulou, Christina Panopoulou, Konstantinos Koukoulakis, Kalliopi Krommyda |
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| Rok vydání: | 2018 |
| Předmět: |
010405 organic chemistry
Process Chemistry and Technology Aqueous two-phase system chemistry.chemical_element Alcohol Activation energy 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences Ruthenium chemistry.chemical_compound chemistry Levulinic acid Organic chemistry Diethyl ether Selectivity General Environmental Science |
| Zdroj: | Applied Catalysis B: Environmental. 238:82-92 |
| ISSN: | 0926-3373 |
| DOI: | 10.1016/j.apcatb.2018.07.009 |
| Popis: | High catalytic activities (TOF = 3000 h−1) have been achieved by novel water-soluble ruthenium catalysts modified with nitrogen-containing ligands such as the bathophenanthrolinedisulfonic acid disodium salt (BPhDS) in the hydrogenation reaction of the renewable polar platform chemical levulinic acid (LA) which possesses a central relevance in the development of biorefineries of the future in a sustainable way to produce with essentially quantitative selectivity of 99.9 mol% γ-valerolactone (GVL) in aqueous media. The apparent activation energy of the Ru/BPhDS catalyst was calculated and amounts a relative low value of 53.3 kJ/mol when one considers that in the LA hydrogenation reaction this catalyst reduces a less reactive keto group into alcohol functionality. A recycling experiment of the Ru/BPhDS catalyst by extraction after addition of diethyl ether has shown that the catalyst is stable without loss of activity and selectivity in a consecutive run. |
| Databáze: | OpenAIRE |
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