Oxidative Catalytic Depolymerization of Technical Lignins to Vanillin(derivatives) Using Polyoxometalate Catalysts
利用多金属氧酸盐催化剂氧化催化解聚工业木质素制备香兰素（衍生物）
Dorothea Voß, Max Papajewski, Jan‐Christian Raabe, Jakob Albert (2026) Oxidative Catalytic Depolymerization of Technical Lignins to Vanillin(derivatives) Using Polyoxometalate Catalysts Preprints.org
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Abstract
The transition from fossil-based resources to renewable feedstocks is a cornerstone of industrial decarbonization. A critical component of this shift lies in deriving intermediates and value-added products from biomass. Among renewable resources, lignin stands out as a promising candidate due to its wide availability, abundance, and non-competitiveness with food production, making it an ideal starting material. The removal and depolymerization of lignin to produce aromatic chemicals can significantly enhance the material usability of all lignocellulose constituents. The removal and depolymerization of lignin to produce aromatic chemicals can significantly enhance the material usability of all lignocellulose constituents. Herein, a process for the polyoxometalate-catalyzed oxidative depolymerization of technical lignins to produce the monoaromatic compounds vanillin (Va), methyl vanillate (MeVa), syringaldehyde (Sy), and methyl syringate (MeSy) is demonstrated, offering the possibility to achive high monoaromatic yields of up to 12wt%.
从化石资源向可再生原料的转型是工业脱碳的基石。这一转变的关键在于从生物质中获取中间体和高附加值产品。在可再生资源中，木质素因其来源广泛、储量丰富且不与粮食生产竞争，成为一种极具潜力的候选原料。木质素的去除和解聚可显著提高所有木质纤维素组分的材料利用率。本文展示了一种利用多金属氧酸盐催化技术木质素氧化解聚生产单芳族化合物香兰素（Va）、香草酸甲酯（MeVa）、丁香醛（Sy）和丁香酸甲酯（MeSy）的方法，该方法有望实现高达12 wt%的单芳族化合物收率。
Links
https://doi.org/10.20944/preprints202604.0153.v1http://dx.doi.org/10.20944/preprints202604.0153.v1
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