Mechanochemical vs impregnation synthesis of metal oxides from pyrolyzed MOFs in microwave-assisted methyl levulinate conversion to gamma-valerolactone

IF 5.2 2区化学 Q1 CHEMISTRY, APPLIED

Catalysis Today Pub Date : 2025-03-06 DOI:10.1016/j.cattod.2025.115260

Lidia López-Gómez , Marina Ronda-Leal , Salvador Pérez-Huertas , Antonio A. Romero , Rafael Luque

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引用次数: 0

Abstract

A series of bimetallic oxides (Al₂O₃-ZrO₂@C) has been synthesized using a metal-organic-framework (NH₂-UiO-66) as a sacrificial agent by both impregnation and mechanochemical methods. The synthesized materials were used in heterogeneous catalysis for the direct conversion of a promising biomass-based building block, i.e., methyl levulinate to γ-valerolactone (GVL). A complete set of characterization, including N₂ adsorption/desorption, X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FTIR) was carried out. The incorporation of aluminum into the catalyst system led to a significant increase in the GVL yield. The conversion rate achieved with the mechanochemistry-based samples doubled that obtained by the impregnation samples. The material prepared via mechanochemistry with the larger Al₂O₃/ZrO₂ ratio exhibited the greatest catalytic activity, i.e., 79 % conversion and 87 % selectivity. GVL is considered a promising biomass-derived platform chemical for numerous applications, including bio-materials, fuels or fuel additives, and various chemical intermediates.

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来源期刊

Catalysis Today 化学-工程：化工

CiteScore

11.50

自引率

3.80%

发文量

573

审稿时长

2.9 months

期刊介绍： Catalysis Today focuses on the rapid publication of original invited papers devoted to currently important topics in catalysis and related subjects. The journal only publishes special issues (Proposing a Catalysis Today Special Issue), each of which is supervised by Guest Editors who recruit individual papers and oversee the peer review process. Catalysis Today offers researchers in the field of catalysis in-depth overviews of topical issues. Both fundamental and applied aspects of catalysis are covered. Subjects such as catalysis of immobilized organometallic and biocatalytic systems are welcome. Subjects related to catalysis such as experimental techniques, adsorption, process technology, synthesis, in situ characterization, computational, theoretical modeling, imaging and others are included if there is a clear relationship to catalysis.