More than a support: the unique role of Nb2O5 in supported metal catalysts for lignin hydrodeoxygenation,Catalysis Science & Technology

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More than a support: the unique role of Nb2O5 in supported metal catalysts for lignin hydrodeoxygenation
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2022-05-11 , DOI: 10.1039/d2cy00245k
Na Ji ₁ , Jianyu Yin ₁ , Yue Rong ₁ , Hanyang Li ₁ , Zhihao Yu ₁ , Yaxuan Lei ₁ , Shurong Wang ₂ , Xinyong Diao ₁

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Nb₂O₅-supported metal materials are a vital class of green catalysts with excellent lignin hydrodeoxygenation activity and reusability in an aqueous catalytic system, in which the Nb₂O₅ support plays a pivotal role because of its nontoxic nature, strong acidity and remarkable stability in water. This review summarizes the recent advances in Nb₂O₅-supported metal catalysts for lignin hydrodeoxygenation, especially the special role of Nb₂O₅. In particular, the review first presents an overview of the structure, acid and redox properties of Nb₂O₅. It then focuses on the unique contribution of Nb₂O₅ in hydrodeoxygenation of lignin model compounds based on comparison with other common supports, including its promotion of C–O cleavage and enhancement of suitability and reusability in the aqueous phase. Strategies for the modification of Nb₂O₅ and the conversion of real lignin or its oil to aromatics over Nb₂O₅-supported metal catalysts are further summarized. Finally, the article attempts to highlight the remaining challenges and provide some outlooks for the future development of Nb₂O₅-supported metal catalysts. This review will provide valuable insights for developing advanced green catalysts for lignin valorization and other challenging environmental catalytic processes.

中文翻译：

不仅仅是一种载体：Nb2O5 在用于木质素加氢脱氧的负载型金属催化剂中的独特作用

Nb ₂ O ₅负载金属材料是一类重要的绿色催化剂，具有优异的木质素加氢脱氧活性和在水催化体系中的可重复使用性，其中 Nb ₂ O ₅载体因其无毒、强酸性和显着的特点而发挥着举足轻重的作用。在水中的稳定性。本文综述了近年来Nb ₂ O ₅负载金属催化剂在木质素加氢脱氧方面的研究进展，特别是Nb ₂ O ₅的特殊作用。特别是，该综述首先概述了 Nb ₂ O _{5的结构、酸性和氧化还原性质。}. 然后，基于与其他常见载体的比较，重点关注 Nb ₂ O _{5在木质素模型化合物加氢脱氧中的独特贡献，包括其促进 C-O 裂解以及增强水相中的适用性和可重复使用性。}进一步总结了在 Nb ₂ O ₅负载的金属催化剂上改性 Nb ₂ O ₅和将真正的木质素或其油转化为芳烃的策略。最后，本文试图强调剩余的挑战，并对 Nb ₂ O _{5的未来发展提出一些展望。}-负载型金属催化剂。本综述将为开发用于木质素增值和其他具有挑战性的环境催化过程的先进绿色催化剂提供有价值的见解。

更新日期：2022-05-11

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