Yu, Xiao, Chen, Guoxing, Widenmeyer, Marc, Kinski, Isabel, Liu, Xingmin, Kunz, Ulrike, Schüpfer, Dominique, Molina-Luna, Leopoldo, Tu, Xin 
ORCID: 0000-0002-6376-0897, Homm, Gert et al (show 1 more authors)
(2023)
Catalytic recycling of medical plastic wastes over La0.6Ca0.4Co1–Fe O3− pre-catalysts for co-production of H2 and high-value added carbon nanomaterials.
Applied Catalysis B: Environmental, 334.
p. 122838.
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Revised Manuscript ACB2023.pdf - Author Accepted Manuscript Download (14MB) | Preview |
Abstract
In this work, waste medical masks collected from daily life usage were pyrolyzed and catalytically decomposed with perovskite-type La0.6Ca0.4Co1–xFexO3−δ pre-catalysts for co-production of carbon nanomaterials and H2. The influences of catalysis reaction temperature and Co/Fe ratio in the investigated pre-catalysts on the yields and selectivity of the gaseous products and carbon deposition were systematically studied. The physicochemical characteristics of the produced carbon nanomaterials were comprehensively characterized by the state-of-the-art techniques. La0.6Ca0.4Co0.2Fe0.8O3–δ possessed the highest hydrogen and carbon nanomaterials yields at 850 °C among all the investigated pre-catalysts. Especially, this pre-catalyst showed an excellent performance during the 10 cycles of successive deconstruction of plastic wastes with the highest hydrogen yield of 34.33 mmol / gplastic at the 7th cycle. More importantly, carbon nanotubes generated had higher graphitic characteristics and fewer defects. The presented results demonstrated that the developed perovskite-type pre-catalyst is a promising candidate for the production of hydrogen and carbon nanotube composites for energy storge applications from medical waste plastics.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Perovskite, H 2 production, Plastic recycling, Carbon nanotube composites, Pyrolysis -catalysis |
| Divisions: | Faculty of Science and Engineering > School of Electrical Engineering, Electronics and Computer Science |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 16 May 2023 07:44 |
| Last Modified: | 02 May 2024 01:30 |
| DOI: | 10.1016/j.apcatb.2023.122838 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3170377 |
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