期刊
FRONTIERS IN CHEMISTRY
卷 9, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fchem.2021.759512
关键词
PtNi alloy; SBA-15; selective hydrogenation; furfural; 5-hydroxymethylfurfural
资金
- National Natural Science Foundation of China [22078211]
- 111 Project [B17030]
The study successfully synthesized PtNi/SBA-15 catalyst with efficient selective hydrogenation ability in water solvent, yielding 64.6% FFA with 77.0% selectivity, and 68.2% DHMF with 81.9% selectivity. PtNi/SBA-15 also exhibited good water resistance and cycling stability after at least five runs.
Valuable furfuryl alcohol (FFA) and 2,5-dihydroxymethylfuran (DHMF) could be produced by selective hydrogenation of biomass-derived furfural (FF) and 5-hydroxymethylfurfural (HMF) with high atom economy. In this study, SBA-15 (a kind of mesoporous silica molecular sieve)-supported low metal loading (3 wt% total metal content) PtNi alloy catalyst (PtNi/SBA-15) was synthesized via two steps, including the generation of PtNi alloy by hydrothermal method, and the immobilization of PtNi alloy on SBA-15. PtNi/SBA-15 has ordered mesoporous structure with high surface area, and high dispersion of the PtNi alloy with the formation of Pt delta--Ni delta+ surface pairs on SBA-15, which benefit hydrogen activation and selective carbonyl hydrogenation. The selective hydrogenation of FF and HMF over PtNi/SBA-15 in water solvent at 303 K with 1.5 MPa H-2 within 2 h, could respectively yield 64.6% FFA with 77.0% selectivity, and 68.2% DHMF with 81.9% selectivity. Besides, PtNi/SBA-15 exhibited a satisfactory water resistance and stability after recycling at least five runs.
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