Highly dispersed Cu supported on urchin-like TiO2 for efficient hydrodeoxygenation of lignin derivatives

IF 6.5 1区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Catalysis Pub Date : 2025-05-12 DOI:10.1016/j.jcat.2025.116216

Lei Chen , Chenhuan Wang , Ningzhao Shang , Shutao Gao , Chun Wang

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Abstract

Exploring efficient non-noble metal catalysts for selective HDO (hydrodeoxygenation) of renewable biomass into valuable-added chemicals is greatly advantageous for sustainable development. Herein, urchin-like TiO₂ supported Cu-based catalyst was synthesized by hydrolysis and one pot hydrothermal process. The obtained Cu/TiO₂-u catalyst exhibited ‌‌distinguished catalytic properties for HDO of lignin derivatives, which was significantly superior to the catalyst fabricated by impregnation method. Under the optimal conditions (120 °C, 1 MPa H₂, 3 h), both the vanillin conversion and selectivity towards 2-methoxy-4-methylphenol (MMP) can achieve 99 %. In addition, the catalyst also demonstrated favorable recyclability and stability. The excellent catalytic activity can be attributed to strong metal-support interaction, appropriate acidic sites, plentiful oxygen vacancies. This work offers a feasible avenue for developing effective non-noble metal heterogeneous catalysts for HDO of biomass derivatives.

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高分散Cu负载在海胆状TiO2上用于木质素衍生物的高效氢脱氧

探索高效的非贵金属催化剂，将可再生生物质选择性加氢脱氧转化为高附加值化学品，对可持续发展具有重要意义。本文采用水解和一锅水热法制备了胆状TiO2负载cu基催化剂。制备的Cu/TiO2-u催化剂对木质素衍生物的HDO具有优异的催化性能，明显优于浸渍法制备的催化剂。在最佳条件（120 ℃，1 MPa H2, 3 h）下，香兰素对2-甲氧基-4-甲基苯酚（MMP）的转化率和选择性均可达到99 %。此外，该催化剂还表现出良好的可回收性和稳定性。优异的催化活性可归因于强的金属-载体相互作用、适宜的酸性位、丰富的氧空位。本研究为开发生物质衍生物HDO的非贵金属非均相催化剂提供了一条可行的途径。

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来源期刊

Journal of Catalysis 工程技术-工程：化工

CiteScore

12.30

自引率

5.50%

发文量

447

审稿时长

31 days

期刊介绍： The Journal of Catalysis publishes scholarly articles on both heterogeneous and homogeneous catalysis, covering a wide range of chemical transformations. These include various types of catalysis, such as those mediated by photons, plasmons, and electrons. The focus of the studies is to understand the relationship between catalytic function and the underlying chemical properties of surfaces and metal complexes. The articles in the journal offer innovative concepts and explore the synthesis and kinetics of inorganic solids and homogeneous complexes. Furthermore, they discuss spectroscopic techniques for characterizing catalysts, investigate the interaction of probes and reacting species with catalysts, and employ theoretical methods. The research presented in the journal should have direct relevance to the field of catalytic processes, addressing either fundamental aspects or applications of catalysis.