The development of sustainable and efficient catalysts -namely Ru supported on activated biochars- is carried out for the selective hydrogenation of 5-hydroxymethylfurfural (HMF) to 1-hydroxy-2,5-hexanedione (HHD). Activated biochars obtained from pyrolysis and steam-based physical activation of two different biomasses from animal (leather tannery waste; A(Lw)) and vegetal (hazelnut shells; A(HSw)) origins show completely different chemical, textural, and morphological properties. Compared to A(Lw), after impregnation with 0.5 wt % Ru, A(HSw), with inner micro-mesochannels and cavities and higher layer stacking disorder, leads to better trapping and anchoring of Ru nanoparticles on the catalyst and a suitable Ru single crystal dispersion. This leads to a highly active Ru/A(HSw) catalyst in the proposed reaction, giving more than 80 % selectivity to HHD and full HMF conversion at 100 degrees C with 30 bar H-2 for 3 h. Ru/A(HSw) also shows promising performance compared to a commercial Ru/C catalyst.

Selective Hydrogenation of 5‐Hydroxymethylfurfural to 1‐Hydroxy‐2,5‐hexanedione by Biochar‐Supported Ru Catalysts

Cruciani, Giuseppe
Penultimo
Investigation
;
2022

Abstract

The development of sustainable and efficient catalysts -namely Ru supported on activated biochars- is carried out for the selective hydrogenation of 5-hydroxymethylfurfural (HMF) to 1-hydroxy-2,5-hexanedione (HHD). Activated biochars obtained from pyrolysis and steam-based physical activation of two different biomasses from animal (leather tannery waste; A(Lw)) and vegetal (hazelnut shells; A(HSw)) origins show completely different chemical, textural, and morphological properties. Compared to A(Lw), after impregnation with 0.5 wt % Ru, A(HSw), with inner micro-mesochannels and cavities and higher layer stacking disorder, leads to better trapping and anchoring of Ru nanoparticles on the catalyst and a suitable Ru single crystal dispersion. This leads to a highly active Ru/A(HSw) catalyst in the proposed reaction, giving more than 80 % selectivity to HHD and full HMF conversion at 100 degrees C with 30 bar H-2 for 3 h. Ru/A(HSw) also shows promising performance compared to a commercial Ru/C catalyst.
2022
Longo, Lilia; Taghavi, Somayeh; Ghedini, Elena; Menegazzo, Federica; Di Michele, Alessandro; Cruciani, Giuseppe; Signoretto, Michela
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2539412
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