Furanic Derivatives Synthesis from Polyols by Heterogeneous Catalysis Over Metals.

Hydrogenolysis Goes Bio: From Carbohydrates and Sugar Alcohols to Platform Chemicals

“…Montassier et al. also found that Raney copper, unlike noble metal catalysts (Ru, Rh and Ir) and Raney Ni, furnished mainly 1,2‐PG under drastic conditions (300 bar H 2 and 260 °C), while methane was obtained as the main product with the other catalysts 27. Chaminand et al.…”

“…However, in the meantime, Montassier et al. examined the hydrogenolysis of glycerol over heterogeneous, supported Rh and Ru, as well as other metallic, catalysts, and provided pioneering insights into the reaction mechanism27 (see Section 4). Chaminand et al.…”

“…Other noble metals that have found applications in the hydrogenolysis of glycerol in recent years are Ir, Pt, and Pd. Iridium was compared with other noble metal catalysts, Raney nickel, and copper by Montassier et al 27. The first applications of Pd in the hydrogenolysis of glycerol concerned the homogeneous complexes of this metal and were patented by Drent and Jager from Shell 65.…”

“…While the aforementioned reactions have been explored since the early 20th century, the first thorough mechanistic insight into the hydrogenolytic cleavage of polyols was only carried out in the 1980s by the research group of Montassier25, 27, 48, 183 They examined the hydrogenolysis of C 3 –C 6 polyols over Cu and Ru catalysts, including sulfur‐modified ruthenium. In short, they postulated that both CO and CC bond cleavage can proceed via the equilibrium step of dehydrogenation/hydrogenation on the catalyst surface, before the final cleavage products are hydrogenated.…”

“… Glycerol and sugar alcohol hydrogenolysis overview according to Montassier et al 25. 27, 48, 183 “OH” groups are adsorbed hydroxyl species on the metal catalyst surface. …”