Catalyst development for indirect internal reforming (IIR) of methane by partial oxidation

Lois Milner-Elkharouf, Martin Khzouz, Robert Steinberger-Wilckens

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    The development of a Ni@SiO2 partial oxidation (POx) catalyst with the potential to support indirect internal reforming (IIR) is reported. The paper explores how the silica shell proves vital in resisting the deactivation of the catalyst by re-oxidation. The results show that the silica shell maintained the nickel in its reduced state by limiting the rate of oxygen diffusion to the nickel surface. Retaining the Ni0 state allows for partial oxidation to proceed. The investigated catalysts were characterised by TGA, XRD, BET and TEM and the performance of the catalysts was assessed by gas chromatography. The tested catalysts showed greater than 95% methane conversion at 750 °C with a high selectivity towards syngas production. The stability of the catalyst was monitored over a time frame of 100 h, with minor degradation occurring due to nickel particle agglomeration.

    Original languageEnglish
    Pages (from-to)5285-5296
    Number of pages12
    JournalInternational Journal of Hydrogen Energy
    Volume45
    Issue number8
    Early online date19 Aug 2019
    DOIs
    Publication statusPublished - 14 Feb 2020

    Funder

    Engineering and Physical Sciences Research Council (EPSRC) [grant number EP/L015749/1

    Keywords

    • Oxidation protection
    • Redox-cycling
    • Silica shell

    ASJC Scopus subject areas

    • Renewable Energy, Sustainability and the Environment
    • Fuel Technology
    • Condensed Matter Physics
    • Energy Engineering and Power Technology

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