Selective chemical upcycling of polyolefin mixtures remains challenging due to the structural similarity of their backbones. Now it has been shown that a single-site nickel catalyst can preferentially and efficiently cleave branched C–C bonds, enabling the hydrogenolytic separation of isotactic polypropylene from mixtures containing both isotactic polypropylene and polyethylene.
- Qingheng Lai
- Xinrui Zhang
- Tobin J. Marks
