The catalytic wet air oxidation (CWAO) of lignin, obtained from sugar-cane bagasse, was evaluated through
kinetic studies of the process of aromatic aldehyde production. The operations were carried out in a high
pressure mechanically stirred slurry reactor, in a semibatch way, and in the presence of a palladium catalyst
supported on γ-alumina in a temperature range of 373−413 K, at a total pressure of 20 bar, where the partial
pressure of oxygen varied in a range of 2−10 bar. The lignin concentration was 60.00 kg/m3 in an alkaline
medium of 2 mol/L of NaOH. The lignin degradation reaction and the aromatic aldehyde buildup were described
by a kinetic model quantified by a complex series/parallel reaction network.
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