木质素中甲醛稳定剂和甲氧基的选择性利用制备高碳数芳烃

IF 15.7 1区化学 Q1 CHEMISTRY, APPLIED

Chinese Journal of Catalysis Pub Date : 2025-01-01 DOI:10.1016/S1872-2067(24)60186-5

Lin Dong , Zhiqiang Fang , Qianbo Yuan , Yong Fan , Yong Yang , Ping Wang , Shixiong Sheng , Yanqin Wang , Zupeng Chen

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引用次数: 0

摘要

摘要以木质素为原料制备芳烃作为液体燃料添加剂的方法有很多。然而，这些方法的发展受到产物收率低、原子利用率低和木质素解聚效率低的限制。在此，我们开发了一种高效的合成方法，以可持续木质素为原料生产高碳数芳烃，总收率为23.1% wt%。特别是充分利用木质素中的甲醛稳定剂和甲氧基，得到了高碳数芳烃。该过程首先是甲醛稳定木质素的还原解聚，然后是Au/Nb2O5催化剂下木质素单体之间的转甲基化，然后是Ru/Nb2O5催化的加氢脱氧。这项工作证明了木质素直接生产增值芳烃的潜力。

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Selective utilization of formaldehyde stabilizing additive and methoxy groups in lignin for the production of high-carbon-number arenes

ABSTRACT

Many strategies have been proposed to produce arenes from lignin as liquid fuel additives. However, the development of these methods is limited by the low yield of products, low atom utilization, and inefficient lignin depolymerization. Herein, we develop an energy-efficient synthetic method for the production of high-carbon-number arenes from sustainable lignin with a total yield of 23.1 wt%. Particularly, high carbon number arenes are obtained by fully utilizing the formaldehyde stabilizing additive and the methoxy group in lignin. The process begins with the reductive depolymerization of formaldehyde-stabilized lignin, followed by transmethylation between lignin monomers over Au/Nb₂O₅ catalyst, and the Ru/Nb₂O₅-catalyzed hydrodeoxygenation. This work demonstrates the potential of value-added arenes production directly from lignin.

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来源期刊

Chinese Journal of Catalysis 工程技术-工程：化工

CiteScore

25.80

自引率

10.30%

发文量

235

审稿时长

1.2 months

期刊介绍： The journal covers a broad scope, encompassing new trends in catalysis for applications in energy production, environmental protection, and the preparation of materials, petroleum chemicals, and fine chemicals. It explores the scientific foundation for preparing and activating catalysts of commercial interest, emphasizing representative models.The focus includes spectroscopic methods for structural characterization, especially in situ techniques, as well as new theoretical methods with practical impact in catalysis and catalytic reactions.The journal delves into the relationship between homogeneous and heterogeneous catalysis and includes theoretical studies on the structure and reactivity of catalysts.Additionally, contributions on photocatalysis, biocatalysis, surface science, and catalysis-related chemical kinetics are welcomed.