Abstract
The selective hydrogenation of 5-hydroxymethylfurfural (HMF) to 2,5-bishydroxymethyltetrahydrofuran (BHMTHF), a vital fuel precursor and solvent, is crucial for biomass refining. Herein, we report highly selective and stable PdNi nanoalloy catalysts for this deep hydrogenation process. A CO 2-assisted green method was developed for the controllable synthesis of various bimetallic and monometallic catalysts. The PdNi/SBA-15 catalysts with various Pd/Ni ratios exhibited a volcano-like trend between BHMTHF yield and Pd/Ni ratio. Among all catalysts tested, Pd 2Ni 1/SBA-15 achieved the best performance, converting 99.0 % of HMF to BHMTHF with 96.0 % selectivity, surpassing previously reported catalysts. Additionally, the Pd 2Ni 1/SBA-15 catalyst maintained excellent stability even after five recycling runs. Catalyst characterizations (e. g., HAADF-STEM) and density functional theory (DFT) calculations confirmed the successful formation of the alloy structure with electron transfer between Ni and Pd, which accounts for the remarkable performance and stability of the catalyst. This work paves the way for developing highly selective and stable alloy catalysts for biomass valorization.
Original language | English |
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Article number | e202418234 |
Journal | Angewandte Chemie International Edition |
Volume | 64 |
Issue number | 6 |
Early online date | 22 Oct 2024 |
DOIs | |
Publication status | Published - 3 Feb 2025 |
Funding
This work was supported by the National Key R&D Program of China (2023YFC3905804), the National Natural Science Foundation of China (22078374, 22378434), and the Scientific and Technological Planning Project of Guangzhou (202206010145). X. Tu would like to acknowledge the support of the British Council (Grant No. 623389161).
Keywords
- biomass refinery
- hydrogenation
- nanoalloys
- 5-Hydroxymethylfurfural
- 2,5-Bishydroxymethyltetrahydrofuran