Tomer, Ajay, Islam, Mazharul M, Bahri, Mounib 
ORCID: 0000-0002-8336-9158, Inns, Donald R ORCID: 0000-0002-5890-7559, Manning, Troy D ORCID: 0000-0002-7624-4306, Claridge, John B ORCID: 0000-0003-4849-6714, Browning, Nigel D ORCID: 0000-0003-0491-251X, Catlow, C Richard A, Roldan, Alberto, Katsoulidis, Alexandros P ORCID: 0000-0003-0860-7440 et al (show 1 more authors)
(2023)
Enhanced production and control of liquid alkanes in the hydrogenolysis of polypropylene over shaped Ru/CeO2 catalysts
Applied Catalysis A: General, 666.
p. 119431.
ISSN 0926-860X, 1873-3875
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Abstract
The hydrogenolysis of polypropylene waste to liquid hydrocarbons offers a promising pathway for the chemical recycling of waste polymers. This work describes the importance of reaction conditions and support morphology to produce high liquid yields with enhanced control of chain length over highly active shaped and non-shaped Ru/CeO<inf>2</inf> catalysts. The shaped 2 wt% Ru/CeO<inf>2</inf> exhibit high liquid alkane yields (58–81%) when compared to the non-shaped 2 wt% Ru/CeO<inf>2</inf> (liquid yield: 34–58%) under optimized reaction conditions (220 °C, 16 h, 30 bar H<inf>2</inf>). In particular, the 2 wt% Ru/CeO<inf>2</inf> nanocube catalyst exhibits the highest activity yielding lighter hydrocarbons. This was rationalized to be a combination of small Ru cluster formation and enhanced metal-support interactions. The influence of larger Ru particles (≥1.5 nm) was confirmed mechanistically using a computational density functional theory study on the hydrogenolysis of pentane (C<inf>5</inf>) to determine the favorable formation of methane in the non-shaped Ru/CeO<inf>2</inf> catalyst.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Shaped-oxides, Polyolefin hydrogenolysis, Ruthenium-ceria, Plastics upcycling, Circular economy |
| Divisions: | Faculty of Science & Engineering > School of Engineering Faculty of Science & Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 03 Oct 2023 07:23 |
| Last Modified: | 28 Feb 2026 01:05 |
| DOI: | 10.1016/j.apcata.2023.119431 |
| Related Websites: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3173300 |
| Disclaimer: | The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate. |
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