Journal
MOLECULAR CATALYSIS
Volume 516, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.mcat.2021.112004
Keywords
Mixed metal MOFs; Transfer hydrogenation; Furfural; Levulinic acid; gamma-Valerolactone
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Crystalline, porous Fe-Ni mixed-metal metal-organic frameworks were successfully synthesized and employed as catalysts for transfer hydrogenation of biomass derivatives. NH2-MIL-88B(Fe2Ni) exhibited high catalytic activity with short reaction time, making it an environmentally benign and recyclable catalyst for the synthesis of furfuryl alcohol and gamma-valerolactone.
Crystalline, porous Fe-Ni mixed-metal metal-organic frameworks (MOFs), namely MIL-88B(Fe2Ni) and NH2-MIL-88B(Fe2Ni), were synthesized and characterized by powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, atomic absorption spectrophotometry (AAS) and nitrogen physisorption measurements. The MOFs were then employed as catalysts for transfer hydrogenation (TH) of biomass derivatives such as furfural and levulinic acid, and various other carbonyl compounds using 2-propanol as a sacrificial hydrogen donor. These heterogeneous catalysts are deemed to be environmentally benign, efficient and recyclable. NH2-MIL-88B(Fe2Ni) showcased good catalytic activity with low catalyst loading in short reaction time. The catalysts were recovered and reused several times without significant degradation in catalytic activity. A mechanism for the TH reaction was also proposed. As far as we are aware, this is the first report on the synthesis of furfuryl alcohol and gamma-valerolactone (GVL) via TH reaction in just 60 min using a MOF catalyst.
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