Bibliographic Details
| Title: |
Nb2O5 supported metal-based heterogeneous catalysts for hydrodeoxygenation (HDO) of lignin-derived molecules: a powerful tool for generating fuel-additive products including hydrocarbons. |
| Authors: |
Patle, Kamleshwar L.1 (AUTHOR), Pardhi, Pooja1 (AUTHOR), Pantawane, Swagat1 (AUTHOR), Sarve, Dayaram T.2 (AUTHOR), Ekhe, Jayant.1 (AUTHOR), Wasewar, Kailas L.1 (AUTHOR) k_wasewar@rediffmail.com |
| Source: |
Catalysis Reviews: Science & Engineering. Feb2025, p1-53. 53p. 26 Illustrations. |
| Subject Terms: |
*GAS phase reactions, *METAL catalysts, *HETEROGENEOUS catalysts, *METAL compounds, *SCISSION (Chemistry), *LIGNINS, *LIGNANS, *LIGNIN structure |
| Abstract: |
Depolymerizing lignin through fast pyrolysis yields a significant quantity of phenolic compounds. However, effectively upgrading these compounds through hydrodeoxygenation (HDO) presents a complex challenge due to multiple reaction pathways. Achieving selective removal of oxygen-containing functional groups while preserving the integrity of the aromatic rings remains a significant hurdle. Nb2O5-supported metal compounds are an essential category of green catalysts because of their strong acidity, non-toxicity, and exceptional hydrothermal stability in water. In aqueous catalytic system using lignin and compounds generated from it, they demonstrate exceptional hydrodeoxygenation activity and reusability. This review points out the limitations of other hydrogenation catalytic systems using the other supports and highlights the latest developments in Nb2O5-supported metal catalysts for the HDO of lignin and lignin-derived molecules, focusing on the unique function of Nb2O5. Major attention is toward the batch reactions however gas phase reactions are occasionally discussed. The review first presents a summary of the structure, acidic & basic properties, and redox properties of Nb2O5. The article then attentions on how Nb2O5 differs from other typical supports in the HDO of lignin model compounds. This includes how it promotes C-O bond cleavage and improves adaptability of catalysts and function of surface acid sites, function of metal sites, effects of metal-support interface & function of oxophilic sites of Nb2O5-supported metal catalyst for HDO of lignin-derived molecules. The paper highlights the major challenges and offers predictions on the imminent advancement of Nb2O5-supported metal catalysts. This review will offer insightful information for creating green catalysts designed for complex environmental catalytic processes like lignin valorization. [ABSTRACT FROM AUTHOR] |
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| Database: |
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