Multi-scale Designed CoxMn3–xO4 Spinels: Smart Pre-Catalysts towards High-Efficiency Pyrolysis-Catalysis Recycling of Waste Plastics

Xingmin Liu; Dan Xu; Hui Ding; Marc Widenmeyer; Wenjie Xie; Maximilian Mellin; Fangmu Qu; Guoxing Chen; Ye Shui Zhang; Zhenyu Zhang; Aasir Rashid; Leopoldo Molina-Luna; Jan P. Hofmann; Ralf Riedel; Dan J.L. Brett; Anke Weidenkaff

doi:10.1016/j.apcatb.2022.122271

Multi-scale Designed Co_xMn_3–xO₄ Spinels: Smart Pre-Catalysts towards High-Efficiency Pyrolysis-Catalysis Recycling of Waste Plastics

Xingmin Liu, Dan Xu^* (Corresponding Author), Hui Ding, Marc Widenmeyer, Wenjie Xie, Maximilian Mellin, Fangmu Qu, Guoxing Chen, Ye Shui Zhang, Zhenyu Zhang, Aasir Rashid, Leopoldo Molina-Luna, Jan P. Hofmann, Ralf Riedel, Dan J.L. Brett, Anke Weidenkaff^* (Corresponding Author)

^*Corresponding author for this work

Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

In this work, multiscale designed 3-dimensional (3D) rose-like Co_xMn_3–xO₄ spinel smart pre-catalysts that can self-convert into the targeted active site-rich Co/MnO catalysts were developed for the high-efficiency conversion of waste plastics. At a pre-catalyst to plastic weight ratio of 1:14, the carbon nanotube composites (CNCs) and H₂ yield can reach 41 wt% and 36 mmol⋅g^{− 1}_pla., while the specific CNCs and H₂yield can be as high as 7.48 g^{− 1}_cat. and 634 mmol⋅g^{− 1}_pla.⋅g^{− 1}_cat. The latter is more than one order of magnitude higher than reported in the literature. Density functional theory calculations indicate that the Co/MnO catalyst exhibits excellent activity in the dissociation of alkanes (e.g., CH₄). The resulting CNCs demonstrated excellent discharge capability and extended cycling performance when used as a lithium-ion battery anode. This work revealed an innovative recipe and novel insight for developing advanced catalyst materials as the next generation catalysts for the conversion of waste plastics.

Original language	English
Article number	122271
Number of pages	13
Journal	Applied Catalysis B: Environmental
Volume	324
Early online date	21 Dec 2022
DOIs	https://doi.org/10.1016/j.apcatb.2022.122271
Publication status	Published - 5 May 2023

Bibliographical note

Acknowledgements
M. W. and A. W. highly acknowledge the funding by the German Federal Ministry of Education and Research (BMBF) within the NexPlas project (project number: 03SF0618B). Y. S. Z is grateful for financial supports provided by the Royal Society of Chemistry Enablement Grant (E21-5819318767) and Royal Society of Chemistry Mobility Grant (M19-2899).

Keywords

Waste plastics
CoxMn3–xO4 spinels
Carbon nanotube composites
H2 production
Pyrolysis-catalysis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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Cite this

Liu, X., Xu, D., Ding, H., Widenmeyer, M., Xie, W., Mellin, M., Qu, F., Chen, G., Zhang, Y. S., Zhang, Z., Rashid, A., Molina-Luna, L., Hofmann, J. P., Riedel, R., Brett, D. J. L., & Weidenkaff, A. (2023). Multi-scale Designed Co_xMn_3–xO₄ Spinels: Smart Pre-Catalysts towards High-Efficiency Pyrolysis-Catalysis Recycling of Waste Plastics. Applied Catalysis B: Environmental, 324, Article 122271. https://doi.org/10.1016/j.apcatb.2022.122271

Liu, X, Xu, D, Ding, H, Widenmeyer, M, Xie, W, Mellin, M, Qu, F, Chen, G, Zhang, YS, Zhang, Z, Rashid, A, Molina-Luna, L, Hofmann, JP, Riedel, R, Brett, DJL & Weidenkaff, A 2023, 'Multi-scale Designed Co_xMn_3–xO₄ Spinels: Smart Pre-Catalysts towards High-Efficiency Pyrolysis-Catalysis Recycling of Waste Plastics', Applied Catalysis B: Environmental, vol. 324, 122271. https://doi.org/10.1016/j.apcatb.2022.122271

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title = "Multi-scale Designed CoxMn3–xO4 Spinels: Smart Pre-Catalysts towards High-Efficiency Pyrolysis-Catalysis Recycling of Waste Plastics",

abstract = "In this work, multiscale designed 3-dimensional (3D) rose-like CoxMn3–xO4 spinel smart pre-catalysts that can self-convert into the targeted active site-rich Co/MnO catalysts were developed for the high-efficiency conversion of waste plastics. At a pre-catalyst to plastic weight ratio of 1:14, the carbon nanotube composites (CNCs) and H2 yield can reach 41 wt% and 36 mmol⋅g− 1pla., while the specific CNCs and H2 yield can be as high as 7.48 g− 1cat. and 634 mmol⋅g− 1pla.⋅g− 1cat. The latter is more than one order of magnitude higher than reported in the literature. Density functional theory calculations indicate that the Co/MnO catalyst exhibits excellent activity in the dissociation of alkanes (e.g., CH4). The resulting CNCs demonstrated excellent discharge capability and extended cycling performance when used as a lithium-ion battery anode. This work revealed an innovative recipe and novel insight for developing advanced catalyst materials as the next generation catalysts for the conversion of waste plastics. ",

keywords = "Waste plastics, CoxMn3–xO4 spinels, Carbon nanotube composites, H2 production, Pyrolysis-catalysis",

author = "Xingmin Liu and Dan Xu and Hui Ding and Marc Widenmeyer and Wenjie Xie and Maximilian Mellin and Fangmu Qu and Guoxing Chen and Zhang, {Ye Shui} and Zhenyu Zhang and Aasir Rashid and Leopoldo Molina-Luna and Hofmann, {Jan P.} and Ralf Riedel and Brett, {Dan J.L.} and Anke Weidenkaff",

note = "Acknowledgements M. W. and A. W. highly acknowledge the funding by the German Federal Ministry of Education and Research (BMBF) within the NexPlas project (project number: 03SF0618B). Y. S. Z is grateful for financial supports provided by the Royal Society of Chemistry Enablement Grant (E21-5819318767) and Royal Society of Chemistry Mobility Grant (M19-2899).",

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T2 - Smart Pre-Catalysts towards High-Efficiency Pyrolysis-Catalysis Recycling of Waste Plastics

AU - Liu, Xingmin

AU - Xu, Dan

AU - Ding, Hui

AU - Widenmeyer, Marc

AU - Xie, Wenjie

AU - Mellin, Maximilian

AU - Qu, Fangmu

AU - Chen, Guoxing

AU - Zhang, Ye Shui

AU - Zhang, Zhenyu

AU - Rashid, Aasir

AU - Molina-Luna, Leopoldo

AU - Hofmann, Jan P.

AU - Riedel, Ralf

AU - Brett, Dan J.L.

AU - Weidenkaff, Anke

N1 - Acknowledgements M. W. and A. W. highly acknowledge the funding by the German Federal Ministry of Education and Research (BMBF) within the NexPlas project (project number: 03SF0618B). Y. S. Z is grateful for financial supports provided by the Royal Society of Chemistry Enablement Grant (E21-5819318767) and Royal Society of Chemistry Mobility Grant (M19-2899).

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N2 - In this work, multiscale designed 3-dimensional (3D) rose-like CoxMn3–xO4 spinel smart pre-catalysts that can self-convert into the targeted active site-rich Co/MnO catalysts were developed for the high-efficiency conversion of waste plastics. At a pre-catalyst to plastic weight ratio of 1:14, the carbon nanotube composites (CNCs) and H2 yield can reach 41 wt% and 36 mmol⋅g− 1pla., while the specific CNCs and H2 yield can be as high as 7.48 g− 1cat. and 634 mmol⋅g− 1pla.⋅g− 1cat. The latter is more than one order of magnitude higher than reported in the literature. Density functional theory calculations indicate that the Co/MnO catalyst exhibits excellent activity in the dissociation of alkanes (e.g., CH4). The resulting CNCs demonstrated excellent discharge capability and extended cycling performance when used as a lithium-ion battery anode. This work revealed an innovative recipe and novel insight for developing advanced catalyst materials as the next generation catalysts for the conversion of waste plastics.

AB - In this work, multiscale designed 3-dimensional (3D) rose-like CoxMn3–xO4 spinel smart pre-catalysts that can self-convert into the targeted active site-rich Co/MnO catalysts were developed for the high-efficiency conversion of waste plastics. At a pre-catalyst to plastic weight ratio of 1:14, the carbon nanotube composites (CNCs) and H2 yield can reach 41 wt% and 36 mmol⋅g− 1pla., while the specific CNCs and H2 yield can be as high as 7.48 g− 1cat. and 634 mmol⋅g− 1pla.⋅g− 1cat. The latter is more than one order of magnitude higher than reported in the literature. Density functional theory calculations indicate that the Co/MnO catalyst exhibits excellent activity in the dissociation of alkanes (e.g., CH4). The resulting CNCs demonstrated excellent discharge capability and extended cycling performance when used as a lithium-ion battery anode. This work revealed an innovative recipe and novel insight for developing advanced catalyst materials as the next generation catalysts for the conversion of waste plastics.

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KW - CoxMn3–xO4 spinels

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DO - 10.1016/j.apcatb.2022.122271

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