Advances in value-added aromatics by oxidation of lignin with transition metal complexes

Sustainable lignin modifications and processing methods: green chemistry as the way forward

“…259 Another approach is the use of the transition metals listed by Zhang et al such as metal salens and vanadium complexes. 260 Even metal-free catalysts (doped graphene) were applied with O 2 for the oxidative depolymerization of lignin model compounds. 261…”

“…259 Another approach is the use of the transition metals listed by Zhang et al such as metal salens and vanadium complexes. 260 Even metal-free catalysts (doped graphene) were applied with O 2 for the oxidative depolymerization of lignin model compounds. 261 In addition to the common organic solvents (e.g., alcohols), Hafezisefat et al used perfluorodecalin (green solvent) with 300 psi O 2 to depolymerize lignin (250 °C, 10 min) from red oak wood.…”