Hydrogen/solvent-free plastic valorization <i>via</i> loosely coordinated ruthenium sites steering selective aromatization.

ABSTRACT: The development of hydrogen- and solvent-free catalytic systems for plastic valorization requires precise control over metal speciation to enhance both catalytic efficiency and selectivity. Ru atomic clusters (ACs) on HZSM-5 zeolite show a turnover frequency of 52.71 mg_LDPE mg_Ru ^-1 h^-1 in low-density polyethylene (LDPE) conversion, a fivefold increase compared to traditional nanoparticles (NPs) at 10.63 mg_LDPE mg_Ru ^-1 h^-1. This improved catalytic performance is further evident in cyclohexane dehydro-aromatization, where atomic-scale Ru sites exhibit a 17.8-fold activity increase (544.34 vs. 30.48 μM mg_Ru ^-1 h^-1), linking subnanometric structures to reaction pathwa

SUBMITTER: Mo F 

PROVIDER: S-EPMC12333442 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature