Polyethylene hydrogenolysis by dilute RuPt alloy to achieve H₂-pressure-independent low methane selectivity.

ABSTRACT: Chemical recycling of plastic waste could reduce its environmental impact and create a more sustainable society. Hydrogenolysis is a viable method for polyolefin valorization but typically requires high hydrogen pressures to minimize methane production. Here, we circumvent this stringent requirement using dilute RuPt alloy to suppress the undesired terminal C-C scission under hydrogen-lean conditions. Spectroscopic studies reveal that PE adsorption takes place on both Ru and Pt sites, yet the C-C bond cleavage proceeds faster on Ru site, which helps avoid successive terminal scission of the in situ-generated reactive intermediates due to the lack of a neighboring Ru site. Different from previous research, this method of suppressing methane generation is independent of H₂ pressur

SUBMITTER: Hu Q 

PROVIDER: S-EPMC11618510 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature