At present, there are various ways to process lignin into potentially valuable chemicals. Hetero-and homogeneous hydrogenolysis can be used to form low-molar-mass compounds, phenolic compounds, and oxygenated and deoxygenated aromatics . The main products formed by pyrolysis are biochar, bio-oil, and synthesis gas . Hydrothermal liquefaction offers another possibility to convert lignin into lowmolecular-mass products such as phenols or methoxyphenolics. Here, water is used simultaneously as reactant and catalyst under subcritical or supercritical conditions .