Synthesis of UiO–66–NH2(Ti/Zr) and its Catalytic Conversion of Cellulose to 5-HMF

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2025-01-02 DOI:10.1007/s10562-024-04851-3

Lingling Xu, Xiaomei Pan, Lijing Gao, Ruiping Wei, Jihang Li, Xiu Wen, Yuanzhuang Li, Guomin Xiao

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引用次数: 0

Abstract

UiO–66–NH₂(Ti/Zr) modified by Ti metal oxide (TiO₂) was used to catalyze the hydrolysis of cellulose to prepare 5-HMF. Under the optimal reaction conditions of H₂O(NaCl)/THF(1/4 mL), 190 °C, 2 h and 50 mg UNT-3(Ti/Zr) (TiO₂ and UiO–66–NH₂ with mass of 1.5 and 0.1 g, respectively), the yield of 5-hydroxymethylfurfural reached 59.88%. UiO–66–NH₂(Ti/Zr) nanocomposites with different mass ratios were successfully prepared by simple solvent evaporation method. SEM and TEM have shown that the modified UiO–66–NH₂(Ti/Zr) are wrapped into sphere by TiO₂ densely attached to the surface of UiO–66–NH₂, which provides favorable conditions for the uniform dispersion of TiO₂ and coordination of the Lewis acidic site of UiO–66–NH₂. NH₃–TPD results confirmed the existence of super-strong, strong, middle and weak acid sites in UiO–66–NH₂(Ti/Zr), and Py-FTIR confirmed the existence of Brønsted and Lewis acids. After four cycles, the yield of 5-HMF and FUR decreased slightly from 59.88 to 51.89% and 9.11 to 7.66%, respectively, and the yield of 5-HMF could still remain above 50%. The results showed that the modified composite treatment of TiO₂ with rich Lewis acid/base and UiO–66–NH₂ could provide a certain idea for the extensive application of biomass research in the future.

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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.

文献相关原料

公司名称

产品信息

阿拉丁

5-hydroxymethylfurfural (HMF)

阿拉丁

furfural (FUR)

阿拉丁

ZrCl<sub>4</sub>

阿拉丁

Nano-titanium dioxide (TiO<sub>2</sub>)

阿拉丁