Highly efficient catalytic transfer hydrogenation of biomass-derived furfural to furfuryl alcohol using UiO-66 without metal catalysts

Recent advances in the catalytic transfer hydrogenation of furfural to furfuryl alcohol over heterogeneous catalysts

“…Qiu et al fabricated a UiO-66 catalyst for the CTH of FF to FFA, which was also applicable for other carbonyl aldehydes. 105 Nearly complete FF conversion and 97% FFA selectivity were obtained using isopropanol as both the solvent and hydrogen donor at 413 K for 5 hours with an E a of 40.5 kJ mol −1 . No obvious loss of activity was observed after five cycles.…”

Recent advances in the conversion of furfural into bio-chemicals through chemo- and bio-catalysis

“…Besides the use of H 2 as a hydrogen source, catalytic transfer hydrogenation (CTH) is a potential alternative protocol for the hydrogenation of furfural to FOL. 93,[98][99][100][101] Zr-based catalysts, [102][103][104][105] CuNi@C, 101 single-atom Ni catalyst, 93 metal-organic framework (MOF) materials, 101,103,106,107 noble metal catalysts such as Pd, Pt, and Ru, [108][109][110][111] and transition metal catalysts such as Fe oxides 112 have been used to catalyze the reaction. MOF-808 has been shown to be the most active catalyst in the CTH of FUR to FOL among the Zr-MOFs due to the facile modication of the metal node mediating the acid-base properties by the introduction of coordinatively unsaturated sites, hydroxyl and methoxy groups in the framework of the Zr-MOF, which favor the adsorption of furfural and 2-propanol.…”

Recent Advances in Reductive Upgrading of 5‐Hydroxymethylfurfural via Heterogeneous Thermocatalysis

“…The UiO-66 consisting of 1,4-dicarboxybenzene and Zr 4 + provided 94 % selectivity toward BHF at 87 % conversion of HMF under the conditions of 453 K, 4 h, atmospheric pressure. [51] Valekar et al fabricated a Zr-metal-organic framework (MOF) with a metal node connectivity of 6 (MOF-808) and treated it by methanol activation to develop coordinatively unsaturated Zr sites as well as surface À OH groups and thereby enhanced the acid-base sites on MOF-808. 96 % yield of BHF was obtained at 355 K after refluxing of 2 h. [52] Analogously, Zr-DUT-69 gave 86 % yield of BHF at 393 K in 2-propanol after 2 h. [53] A Zr-based organicinorganic coordination polymer (MZCCP) prepared by the reaction of ZrCl 4 and cyanuric acid on the surface of Fe 3 O 4 bears a proper acid-base ratio and strength, providing 93 % yield of BHF at 413 K within 5 h in 2-butanol.…”