Fig. 7: Optimization of conditions on pine RCF oligomers.
From: Catalytic carbon–carbon bond cleavage in lignin via manganese–zirconium-mediated autoxidation
GC-FID quantification of optimizations of a temperature, b O2 loading, c catalyst loading, d substrate loading, e time, and f zirconium loading for the autoxidation catalysis of methylated pine RCF oligomer oxidation. Conditions except the individual parameter changed: substrate, 50 mg; catalyst, 8 wt% Mn(OAc)2•4H2O, 12 wt% Zr(acac)4; solvent, 15 mL acetic acid; O2 loading, 6 bar; temperature, 150 °C. Numerical values for the individual products are presented in Supplementary Tables 9−14.
