Metal-Free Hydrogenation of Biomass Derived Furfural into Furfuryl Alcohol Over Carbon–MgO Catalysts in Continuous Mode

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

“…Koppadi et al prepared eco-friendly carbon-MgO composite catalysts (MgO-CX (X: carbon content)) via an in situ transformation technique using rice grain and Mg(Ac) 2 ·4H 2 O as the carbon and MgO precursor, respectively. 133 MgO-C68 exhibited the best catalytic performance, giving complete FF conversion and 98% FFA selectivity using isopropanol as the hydrogen donor at 453 K and 50 mL min −1 N 2 . The good catalytic activity of MgO-C68 was attributed to the nanoscale deposition of MgO particles of appropriate size on the surface of graphitic carbon to expose more basic MgO active sites.…”

Porous SiO2 Nanospheres Modified with ZrO2 and Their Use in One-Pot Catalytic Processes to Obtain Value-Added Chemicals from Furfural

“…Although the CTH process is relatively novel for the synthesis of FOL, this was discovered nearly 100 years ago by Meerwein, Ponndorf, and Verley. − The first studies were carried out through homogeneous catalysis, using some metal complexes and/or alkoxides, which act as Lewis acid sites. , Nevertheless, heterogeneous catalysts have progressively appeared as a greener alternative to the traditional homogeneous ones, because they are easily separable and can be reused. Several solid Lewis acid, or basic, catalysts, such as ZrO 2 , − Al 2 O 3 , ,, Fe 2 O 3 , , MgO, ,− Zr-, − Hf-, , or Sn-zeolites ,,, and Zr-, − Ru-modified zirconium hydroxide, Ni- and Ni–W/active carbon, or Hf- MOFs − have been proposed for the CTH of FUR.…”

Synthesis of high surface area zinc oxide supported copper catalysts and its catalytic activity studies on dehydrogenation of cyclohexanol

“…Using Cu(NO 3 ) 2 .3H 2 O (Sigma-Aldrich, USA, 99.9%) as a copper precursor calculated with nominal loadings (5, 10, 15 and 20 wt.% of copper) were prepared by impregnation method. The required amount of copper nitrate was dissolved in water and then HSA-ZnO support was added slowly, which was dried at 343 K until complete moisture removal and then further dried for 12 h in oven at 373 K. In next step, the dried samples were calcined at 623 K under air ow for 8 h [27][28] [29] [30]. A comparison study was made between a commercial low surface area ZnO based Cu catalyst ad the lab made HAS ZnO catalyst in optimized reaction conditions.…”