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

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

doi:10.1016/j.ijhydene.2019.05.026

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

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

University of Birmingham

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

10 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 language	English
Pages (from-to)	5285-5296
Number of pages	12
Journal	International Journal of Hydrogen Energy
Volume	45
Issue number	8
Early online date	19 Aug 2019
DOIs	https://doi.org/10.1016/j.ijhydene.2019.05.026
Publication status	Published - 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

UN SDGs

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

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10.1016/j.ijhydene.2019.05.026

Cite this

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title = "Catalyst development for indirect internal reforming (IIR) of methane by partial oxidation",

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.",

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AU - Milner-Elkharouf, Lois

AU - Khzouz, Martin

AU - Steinberger-Wilckens, Robert

PY - 2020/2/14

Y1 - 2020/2/14

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AB - 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.

KW - Oxidation protection

KW - Redox-cycling

KW - Silica shell

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JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

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

Abstract

Funder

Keywords

ASJC Scopus subject areas

UN SDGs

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