TY - JOUR
T1 - Insight into the hydrogenation of pure and crude HMF to furan diols using Ru/C as catalyst
AU - Fulignati, Sara
AU - Antonetti, Claudia
AU - Licursi, Domenico
AU - Pieraccioni, Matteo
AU - Wilbers, Erwin
AU - Heeres, Hero Jan
AU - Galletti, Anna Maria Raspolli
PY - 2019/5/25
Y1 - 2019/5/25
N2 - 5-hydroxymethylfurfural (HMF) is one of the most important renewable platform-chemicals, a very valuable precursor for the synthesis of bio-fuels and bio-products. In this work, the hydrogenation of HMF to two furan diols, 2,5-bis(hydroxymethyl)furan (BHMF) and 2,5-bis(hydroxymethyl)tetrahydrofuran (BHMTHF), both promising renewable monomers, was investigated. Three commercial catalysts, Ru/C, Pd/C and Pt/C, were tested in the hydrogenation of aqueous HMF solutions (2-3 wt%), using a metal loading of 1 wt% respect to HMF content. By appropriate tuning of the process conditions, either BHMF or BHMTHF were obtained in good yields, and Ru/C resulted the best catalyst for this purpose, allowing us to obtain BHMF or BHMTHF yields up to 93.0 and 95.3 mol%, respectively. This catalyst was also tested for in the hydrogenation of a crude HMF-rich hydrolyzate, obtained by one-pot the dehydration of fructose. The influence of each component of this hydrolyzate on the hydrogenation efficiency was investigated, including unconverted fructose, rehydration acids and humins, in order to improve the yields towards each furan diol. Moreover, ICP-OES and TEM analysis showed that the catalyst was not subjected to important leaching and sintering phenomena, as further confirmed by catalyst recycling study.
AB - 5-hydroxymethylfurfural (HMF) is one of the most important renewable platform-chemicals, a very valuable precursor for the synthesis of bio-fuels and bio-products. In this work, the hydrogenation of HMF to two furan diols, 2,5-bis(hydroxymethyl)furan (BHMF) and 2,5-bis(hydroxymethyl)tetrahydrofuran (BHMTHF), both promising renewable monomers, was investigated. Three commercial catalysts, Ru/C, Pd/C and Pt/C, were tested in the hydrogenation of aqueous HMF solutions (2-3 wt%), using a metal loading of 1 wt% respect to HMF content. By appropriate tuning of the process conditions, either BHMF or BHMTHF were obtained in good yields, and Ru/C resulted the best catalyst for this purpose, allowing us to obtain BHMF or BHMTHF yields up to 93.0 and 95.3 mol%, respectively. This catalyst was also tested for in the hydrogenation of a crude HMF-rich hydrolyzate, obtained by one-pot the dehydration of fructose. The influence of each component of this hydrolyzate on the hydrogenation efficiency was investigated, including unconverted fructose, rehydration acids and humins, in order to improve the yields towards each furan diol. Moreover, ICP-OES and TEM analysis showed that the catalyst was not subjected to important leaching and sintering phenomena, as further confirmed by catalyst recycling study.
KW - 5-Hydroxymethylfurfural
KW - Aqueous-phase hydrogenation
KW - 2,5-Bis(hydroxymethyl)furan
KW - 2,5-Bis(hydroxymethyl)tetrahydrofuran
KW - Crude hydrolyzate
KW - ONE-POT PRODUCTION
KW - SELECTIVE HYDROGENATION
KW - ASSISTED DEHYDRATION
KW - SOLID CATALYSTS
KW - ACTIVE CATALYST
KW - LACTIC-ACID
KW - CONVERSION
KW - BIOMASS
KW - 2,5-DIMETHYLFURAN
KW - HYDRODEOXYGENATION
U2 - 10.1016/j.apcata.2019.04.007
DO - 10.1016/j.apcata.2019.04.007
M3 - Article
SN - 0926-860X
VL - 578
SP - 122
EP - 133
JO - Applied Catalysis A-General
JF - Applied Catalysis A-General
ER -