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Pyrolysis reactions – lignin There are three main product groups in lignin pyrolysates:1 large-molar-mass oligomers (i.e., pyrolytic lignins), monomeric phenolic compounds (e.g., phenols, hydroxylphenols, guaiacols and syringols) and light compounds (e.g., methanol and acetic acid). Devolatilisation and char formation are the two competing reactions, along with some subsequent secondary reactions. Char formation via crosslinking reactions
