The catalytic cracking of high‐density polyethylene (HDPE) is an attractive process to valorize wastes throughout the production of the original monomers or fuels.1 The cracking catalyst based on zeolites is able to drive the scission of the polymeric chain, while controlling the final selectivity of monomers or fuels.2 The disadvantage of using a cracking catalyst is the deactivation caused by coke fouling, which hinders the cracking of heavy hydrocarbons and reduces the lifetime of the catalyst.3