Modification of Pt/SiO2 with Mg(OH)2 Improves Xylose to Xylulose Isomerization

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL Catalysis Letters Pub Date : 2024-09-17 DOI:10.1007/s10562-024-04824-6

Wenxuan Li, Ming Chen, Yuanbo Song, Mengyu Jin, Dongsu Bi, Yalei Zhang, Zheng Shen

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Abstract

Sugar compounds are an important part of biomass resources, and their catalytic conversion can prepare a series of platform compounds, such as lactic acid and polyols. One of the key steps is the isomerization of aldoses to ketoses. However, finding a simple method to efficiently convert aldoses to ketoses remains a great challenge. Herein, we report a core–shell structured catalyst, Pt/SiO₂@Mg(OH)₂, for the efficient conversion of xylose as well as the further conversion of xylose to xylulose. Xylose, a five-carbon sugar unit with the highest content in biomass, was used as the object of study to determine the optimal reaction conditions in the aqueous system by adjusting the loading amount of Mg(OH)₂, catalyst addition, reaction temperature, and reaction time: In the optimum aqueous conditions, the yield of xylulose was 23.61%. We also investigated the effect of solvent effects on the hydrothermal reaction and determined the optimal solvent ratio, the yield of xylulose reached 31.74% at H₂O:MeOH (8:2). We anticipate that this research result can provide a theoretical basis and reference for the industrialized production of subsequent sugar isomerization.

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用 Mg(OH)2 对 Pt/SiO2 进行改性可提高木糖到木酮糖的异构化效果

糖类化合物是生物质资源的重要组成部分，其催化转化可制备一系列平台化合物，如乳酸和多元醇。其中一个关键步骤是将醛糖异构化为酮糖。然而，寻找一种简单的方法来高效地将醛糖转化为酮糖仍然是一个巨大的挑战。在此，我们报告了一种核壳结构催化剂--Pt/SiO2@Mg(OH)2--用于木糖的高效转化以及木糖到木酮糖的进一步转化。木糖是生物质中含量最高的五碳糖单元，以木糖为研究对象，通过调整 Mg（OH）2 的负载量、催化剂添加量、反应温度和反应时间，确定水体系中的最佳反应条件：在最佳水相条件下，木酮糖的产率为 23.61%。我们还研究了溶剂对水热反应的影响，确定了最佳溶剂配比，在 H2O:MeOH (8:2) 条件下，木聚糖的产率达到 31.74%。我们期待这一研究成果能为后续糖异构化的工业化生产提供理论依据和参考。图文摘要

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.