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- W4308673995 abstract "Noble metal-based hydrogenolysis is emerging as a key chemical deconstruction technology of polyolefins into valuable products. Still, the catalyst cost and availability are significant barriers to handling the large volume of plastics. Cheap earth-abundant metals have been deemed inactive for polyolefin hydrogenolysis. Herein, we report that Ni/SiO2 is active in deconstructing low-density polyethylene to n-alkanes (C6-C35) at mild conditions (300 °C, 30 bar H2) with maximum liquid yields of 65 wt%. We expose a new mechanism of long-alkane hydrogenolysis that encompasses chain location-dependent single and multiple C-C bond cracking events and rationalizes product selectivity and molecular weight dependence. Ni/SiO2 catalysts are reusable and can handle multiple plastics producing feedstock-dependent products (i.e., n-alkanes, iso-alkanes, cyclics, aromatics, etc.). The findings broaden the scope of viable catalysts polyolefin hydrogenolysis and unleash the potential to manage the volume of plastic waste." @default.
- W4308673995 created "2022-11-14" @default.
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- W4308673995 date "2023-03-01" @default.
- W4308673995 modified "2023-10-16" @default.
- W4308673995 title "Ni/SiO2 catalysts for polyolefin deconstruction via the divergent hydrogenolysis mechanism" @default.
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- W4308673995 doi "https://doi.org/10.1016/j.apcatb.2022.122138" @default.
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