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Low temperature methane conversion with perovskite-supported exo/endo-particles

Lookup NU author(s): Dr Kelly Kousi, Dr Dragos Neagu, Dr Leonidas Bekris, Dr Evangelos Papaioannou, Professor Ian Metcalfe

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).

Abstract

© The Royal Society of Chemistry.Lowering the temperature at which CH4 is converted to useful products has been long-sought in energy conversion applications. Selective conversion to syngas is additionally desirable. Generally, most of the current CH4 activation processes operate at temperatures between 600 and 900 °C when non-noble metal systems are used. These temperatures can be even higher for redox processes where a gas phase-solid reaction must occur. Here we employ the endogenous-exsolution concept to create a perovskite oxide with surface and embedded metal nanoparticles able to activate methane at temperatures as low as 450 °C in a cyclic redox process. We achieve this by using a non-noble, Co-Ni-based system with tailored nano- and micro-structure. The materials designed and prepared in this study demonstrate long-term stability and resistance to deactivation mechanisms while still being selective when applied for chemical looping partial oxidation of methane. This journal is

Publication metadata

Author(s): Kousi K, Neagu D, Bekris L, Cali E, Kerherve G, Papaioannou EI, Payne DJ, Metcalfe IS

Publication type: Article

Publication status: Published

Journal: Journal of Materials Chemistry A

Year: 2020

Volume: 8

Issue: 25

Pages: 12406-12417

Online publication date: 11/06/2020

Acceptance date: 09/06/2020

Date deposited: 31/07/2020

ISSN (print): 2050-7488

ISSN (electronic): 2050-7496

Publisher: Royal Society of Chemistry

URL: https://doi.org/10.1039/D0TA05122E

DOI: 10.1039/d0ta05122e

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