1. Bifunctional zirconium-based metal-organic frameworks as chemoselective catalysts for the synthesis of γ-valerolactone from furfural via a one-pot cascade reaction.
- Author
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Zhang, Peng, Hou, Pan, Ma, Mingwei, Bu, Ke, Guo, Qi, Yue, Huijuan, Tian, Ge, and Feng, Shouhua
- Subjects
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FURFURAL , *METAL-organic frameworks , *CATALYST synthesis , *HETEROGENEOUS catalysts , *ACID catalysts , *LEWIS acids - Abstract
The transformation of lignocellulosic biomass to platform compounds (γ-valerolactone, GVL) was a significant component in biomass development. Herein, sulfonated Zr-based metal-organic frameworks (MOF-808), a bifunctional heterogeneous catalyst with Lewis and Bronsted acid sites, were prepared to catalyze the one-pot cascade reaction of furfural (FUR) to GVL. The successful modification of the sulfonic group on MOF-808 was substantiated by multiple characterization methods. By adjusting the sulfuric acid concentration to balance the Lewis acid and Bronsted acid sites of the catalyst, S-808–2.37 was confirmed as the preferred catalyst and a 60.4 % GVL yield was achieved with 99.1 % carbon balance under the optimal conditions. Moreover, the 72.8 % GVL yield reached in the 40x magnification experiment also boded well for the catalyst's application potential. The work in this paper opened up new perspectives for the application of MOF-808 porous materials in the field of selective catalytic conversion of biomass involving multi-step reactions. [Display omitted] • Strong interaction between Zr and OH of H 3 BDC led to the formation of strong Lewis acidic/basic sites in the frameworks. • The cooperative role of strong Lewis acidic/basic sites in the S-808–2.37 contributed to the excellent catalytic performance. • This work provided a promising strategy to modulate the acid-base properties of MOF-808 without affecting its structure. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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