Selective Production of Levulinic Acid from Furfuryl Alcohol in THF Solvent Systems over H-ZSM-5,ACS Catalysis

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Selective Production of Levulinic Acid from Furfuryl Alcohol in THF Solvent Systems over H-ZSM-5
ACS Catalysis ( IF 11.3 ) Pub Date : 2015-05-01 00:00:00 , DOI: 10.1021/acscatal.5b00274
Max A. Mellmer _{1,

2} , Jean Marcel R. Gallo _{1,

3} , David Martin Alonso ₁ , James A. Dumesic _{1,

2}

Affiliation

Furfuryl alcohol in high concentrations (1 M) was hydrolyzed to levulinic acid in high yields (>70%) using H-ZSM-5 zeolite as the catalyst in monophasic tetrahydrofuran (THF)–water solvent systems. Reaction kinetics studies using H-ZSM-5 were carried out, and combined with results obtained for other Brønsted acid catalysts, we suggest that the structural properties of H-ZSM-5, in conjunction with increased reaction performance using the polar aprotic solvent THF, are effective for furfuryl alcohol hydrolysis to levulinic acid while inhibiting furfuryl alcohol polymerization reactions. In addition, on the basis of results obtained for a wide range of THF–H₂O solvent systems (19:1–1:2 w/w), we suggest that the hydrophobic nature of H-ZSM-5 alters the internal solvent microenvironment within the zeolite framework, allowing for high levulinic acid yields, even at low THF solvent concentrations (e.g., 1:2 THF–H₂O w/w).

中文翻译：

在H-ZSM-5上，由THF溶剂体系中的糠醇选择性生产戊酸

在单相四氢呋喃（THF）-水溶剂体系中，使用H-ZSM-5沸石作为催化剂，将高浓度（1 M）的糠醇水解成乙酰丙酸（产率> 70％）。进行了使用H-ZSM-5的反应动力学研究，并结合其他布朗斯台德酸催化剂获得的结果，我们建议H-ZSM-5的结构性质，以及使用极性非质子溶剂THF的提高的反应性能，对糠醇水解为乙酰丙酸有效，同时抑制糠醇聚合反应。此外，根据获得的各种THF–H _2的结果在O溶剂系统（19：1–1：2 w / w）下，我们建议H-ZSM-5的疏水性质改变了沸石骨架内的内部溶剂微环境，即使在低THF溶剂下也可实现高乙酰丙酸收率浓度（例如1：2 THF–H ₂ O w / w）。

更新日期：2015-05-01

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