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Wei Zhang, Sungmin Kim, Lennart Wahl, Rachit Khare, Lillian Hale, Jian Zhi Hu, Donald M. Camaioni, Oliver Y. Gutiérrez, Yue Liu, Johannes A. Lercher
Selective upcycling of polyolefin waste has been hampered by the relatively high temperatures that are required to cleave the carbon-carbon (C–C) bonds at reasonably high rates. We present a distinctive approach that uses a highly ionic reaction environment to increase the polymer reactivity and lower the energy of ionic transition states. Combining endothermic cleavage of the polymer C–C bonds with exothermic alkylation reactions of the cracking products enables full conversion of polyethylene and polypropylene to liquid isoalkanes (C 6 to C 10 ) at temperatures below 100°C. Both reactions are catalyzed by a Lewis acidic species that is generated in a chloroaluminate ionic liquid. The alkylate product forms a separate phase and is easily separated from the reactant catalyst mixture. The process can convert unprocessed postconsumer items to high-quality liquid alkanes with high yields.
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Zhang, W., Kim, S., Wahl, L., Khare, R., Hale, L., Hu, J. Z., Camaioni, D. M., Gutiérrez, O. Y., Liu, Y., & Lercher, J. A. (2023). Low-temperature upcycling of polyolefins into liquid alkanes via tandem cracking-alkylation. Science, 379(6634), 807–811. https://doi.org/10.1126/science.ade7485
Zhang, Wei, et al. "Low-temperature upcycling of polyolefins into liquid alkanes via tandem cracking-alkylation." Science, vol. 379, no. 6634, 2023, pp. 807–811, https://doi.org/10.1126/science.ade7485.
Zhang, Wei, Sungmin Kim, Lennart Wahl, Rachit Khare, Lillian Hale, Jian Zhi Hu, Donald M. Camaioni, Oliver Y. Gutiérrez, Yue Liu, and Johannes A. Lercher. "Low-temperature upcycling of polyolefins into liquid alkanes via tandem cracking-alkylation." Science 379, no. 6634 (2023): 807–811. https://doi.org/10.1126/science.ade7485.
Zhang W., Kim S., Wahl L. [и др.] Low-temperature upcycling of polyolefins into liquid alkanes via tandem cracking-alkylation // Science. — 2023. — Vol. 379, № 6634. — P. 807–811. — URL: https://doi.org/10.1126/science.ade7485
@article{zhang2023lowtemperature,
title = {{Low-temperature upcycling of polyolefins into liquid alkanes via tandem cracking-alkylation}},
author = {Wei Zhang and Sungmin Kim and Lennart Wahl and Rachit Khare and Lillian Hale and Jian Zhi Hu and Donald M. Camaioni and Oliver Y. Gutiérrez and Yue Liu and Johannes A. Lercher},
journal = {Science},
year = {2023},
volume = {379},
number = {6634},
pages = {807--811},
doi = {10.1126/science.ade7485},
url = {https://doi.org/10.1126/science.ade7485}
}TY - JOUR AU - Zhang, Wei AU - Kim, Sungmin AU - Wahl, Lennart AU - Khare, Rachit AU - Hale, Lillian AU - Hu, Jian Zhi AU - Camaioni, Donald M. AU - Gutiérrez, Oliver Y. AU - Liu, Yue AU - Lercher, Johannes A. TI - Low-temperature upcycling of polyolefins into liquid alkanes via tandem cracking-alkylation JO - Science VL - 379 IS - 6634 SP - 807 EP - 811 PY - 2023 DA - 2023/02/24 DO - 10.1126/science.ade7485 UR - https://doi.org/10.1126/science.ade7485 ER -
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