The aim of the PYROCAT joint team will be to study the catalytic pyrolysis of polymer waste in order to allow material recovery (return to monomers or molecules of interest to petrochemicals) or recovery in the field of energy (return to a pseudo-petroleum) of this waste. Pyrolysis is a thermochemical process that involves carrying to high temperature and inert atmosphere an organic or non-organic compound. This process can therefore be used to recover polymer waste either by obtaining monomers (material recovery) or by obtaining oil equivalent to petroleum (energy recovery). The objective of the team’s research programme is to develop knowledge in this area. The objective of improving this knowledge is to deploy at industrial level the process of catalytic pyrolysis of waste, a process that is little used on an industrial scale. This weak industrial-scale development of catalytic pyrolysis technologies for the recovery of polymer waste is linked to a number of technological locks including, for example, the development of new catalysts.