MOF-derived Fe3O4@SiO2/Al2O3 yolk-shell nanoreactor for efficient furfural acetalization

IF 3.4 3区化学 Q2 CHEMISTRY, PHYSICAL Catalysis Communications Pub Date : 2024-02-01 DOI:10.1016/j.catcom.2024.106900

Yang Zhang , Qizhuang Zou , Ruiqi Fang , Hua Tan , Hongbing Ji , Yingwei Li

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Abstract

Yolk-shell nanoreactors feature numbers of advantages in promoting catalytic performance. This work demonstrates the fabrication of yolk-shell Fe₃O₄@SiO₂/Al₂O₃-T (T = 500–900 °C) from metal-organic framework. Characterizations indicate the Fe₃O₄ yolk and SiO₂/Al₂O₃ shell of the obtained nanoreactors. Fe₃O₄@SiO₂/Al₂O₃–800 showed excellent performance in furfural acetalization to 2-(dimethoxymethyl)furan, achieving a 97% yield at 60 °C, atmospheric pressure within 5 h. Control experiments reveal the high reactivity of Fe₃O₄ yolks for furfural acetalization, and acidic Al species are favorable for reactivity promotion. Besides, porous SiO₂/Al₂O₃ shells facilitate mass transfer and increase the accessibility of active sites, also contribute to the high performance and stability.

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用于高效糠醛缩醛化的 MOF 衍生 Fe3O4@SiO2/Al2O3 卵黄壳纳米反应器

卵壳纳米反应器在提高催化性能方面具有诸多优势。这项工作展示了利用金属有机框架制备卵黄壳 Fe3O4@SiO2/Al2O3-T（T = 500-900℃）的过程。表征结果表明，获得的纳米反应器具有 Fe3O4 卵黄和 SiO2/Al2O3 外壳。对照实验结果表明，Fe3O4@SiO2/Al2O3-800 在糠醛缩醛生成 2-（二甲氧基甲基）呋喃的过程中表现出优异的性能，在 60 ℃、常压条件下，5 h 内的产率达到 97%。此外，多孔的 SiO2/Al2O3 壳有利于传质，增加了活性位点的可及性，也有助于提高性能和稳定性。

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来源期刊

Catalysis Communications 化学-物理化学

CiteScore

6.20

自引率

2.70%

发文量

183

审稿时长

46 days

期刊介绍： Catalysis Communications aims to provide rapid publication of significant, novel, and timely research results homogeneous, heterogeneous, and enzymatic catalysis.