Unravelling potential reaction intermediates during catalytic pyrolysis of polypropylene with microscopy and spectroscopy.

ABSTRACT: While plastics-to-plastics recycling via melting and re-extrusion is often the preferred option due to a relatively low CO₂ footprint, this technique requires a highly sorted waste stream and plastic properties can often not be maintained. Obtaining aromatics, such as benzene, toluene, and xylene (BTX), via catalytic pyrolysis of polyolefins, such as polypropylene and polyethylene, offers another attractive recycling technology. In this process, a discarded crude oil refinery catalyst (ECAT) was previously shown to lower the unwanted formation of deactivating coke species compared to a fresh crude oil refinery catalyst (FCC-cat), while yielding 20 wt% aromatics from polypropylene. In this work, we study the underlying reaction mechanism for this chemical recycling

SUBMITTER: Vollmer I 

PROVIDER: S-EPMC10876043 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature