Modified Vermiculite Supported Ru Nanoparticles as a Robust Catalyst for the Hydrogenation of Levulinic Acid to γ-Valerolactone

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL Catalysis Letters Pub Date : 2025-01-28 DOI:10.1007/s10562-025-04945-6

Danhong Yang, Shihong Chen, Lei Wang, Mingdeng Liu, Lanping Lai, Lina Zhou

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Abstract

Organic-pillared vermiculite was applied as the support to fabricate Ru catalyst via adsorption-precipitation method. The catalytic performances of the catalyst were investigated for the selective hydrogenation of levulinic acid (LA) or methyl levulinate (ML) to γ-valerolactone (GVL). The 100% selectivity of GVL and 100% conversion of LA were obtained at 403 K, 4.0 MPa using water as solvent. Moreover, a good recyclability was observed even after 14 reaction cycles as a slight conversion decrease of the LA and no change of the selectivity of GVL. The Characterization of the fresh catalysts and reused catalysts were performed using various techniques including XRD, FT-IR, N₂ adsorption-desorption, XPS and TEM. The catalytic tests and characterization data confirmed that the sample of Ru/Modified-Vermiculite can be taken as a robust and effective catalyst for the conversion of the LA to GVL.

Graphical Abstracts

The modified vermiculite supported-Ru catalyst has super activity and stability in the hydrogenation of levulinic acid to γ-valerolactone. Ru active components dispersed uniformly on the surface of organic modified vermiculite, and there was no obvious aggregation of the components. Even after fourteen cycles, levulinic acid conversion and γ-valerolactone selectivity remained 95% and 100%, respectively. The present work provides an efficient route for the preparing the Ru-based catalyst of excellent stability in the process of hydrogenation of levulinic acid.

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改性蛭石负载Ru纳米颗粒作为乙酰丙酸加氢制γ-戊内酯催化剂的研究

以有机柱状蛭石为载体，采用吸附-沉淀法制备Ru催化剂。研究了该催化剂对乙酰丙酸（LA）或乙酰丙酸甲酯（ML）选择性加氢生成γ-戊内酯（GVL）的催化性能。在403 K、4.0 MPa条件下，以水为溶剂，GVL的选择性为100%，LA的转化率为100%。而且，即使经过14个反应循环，LA的转化率也略有下降，GVL的选择性没有变化，具有良好的可回收性。采用XRD、FT-IR、N2吸附-解吸、XPS和TEM等技术对新催化剂和重复使用催化剂进行了表征。催化实验和表征数据证实，Ru/改性蛭石样品可以作为LA转化为GVL的稳健有效的催化剂。改性蛭石负载钌催化剂在乙酰丙酸加氢制γ-戊内酯反应中具有超强的活性和稳定性。钌活性成分在有机改性蛭石表面分布均匀，无明显的聚集现象。即使经过14次循环，乙酰丙酸转化率和γ-戊内酯选择性仍分别保持95%和100%。本研究为乙酰丙酸加氢过程中制备稳定性优良的钌基催化剂提供了一条有效途径。

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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.