The comparative kinetic analysis of Acetocell and Lignoboost® lignin pyrolysis: The estimation of the distributed reactivity models

► Detailed comparative kinetic analysis of Acetocell and Lignoboost® lignin pyrolysis. ► Apparent activation energy for all lignins strongly depends on pyrolysis conversion. ► Three reaction steps/stages of pyrolysis observed for both lignins. ► Main pyrolysis step of both lignins is characterized by stilbene pyrolysis reactions. ► Pyrolytic processes can be modeled with n-th order and the Weibull mixture models.