Nano-socketed nickel particles with enhanced coking resistance grown in situ by redox exsolution

Dragos Neagu; Tae-Sik Oh; David Noel Miller; Hervé Ménard; Syed Munawer Bukhari; Stephen Richard Gamble; Raymond J. Gorte; John M. Vohs; John Thomas Sirr Irvine

doi:10.1038/ncomms9120

Nano-socketed nickel particles with enhanced coking resistance grown in situ by redox exsolution

Dragos Neagu, Tae-Sik Oh, David Noel Miller, Hervé Ménard, Syed Munawer Bukhari, Stephen Richard Gamble, Raymond J. Gorte, John M. Vohs, John Thomas Sirr Irvine

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

Abstract

Metal particles supported on oxide surfaces are used as catalysts for a wide variety of processes in the chemical and energy conversion industries. For catalytic applications, metal particles are generally formed on an oxide support by physical or chemical deposition, or less commonly by exsolution from it. Although fundamentally different, both methods might be assumed to produce morphologically and functionally similar particles. Here we show that unlike nickel particles deposited on perovskite oxides, exsolved analogues are socketed into the parent perovskite, leading to enhanced stability and a significant decrease in the propensity for hydrocarbon coking, indicative of a stronger metal–oxide interface. In addition, we reveal key surface effects and defect interactions critical for future design of exsolution-based perovskite materials for catalytic and other functionalities. This study provides a new dimension for tailoring particle–substrate interactions in the context of increasing interest for emergent interfacial phenomena.

Original language	English
Article number	8120
Pages (from-to)	1-8
Number of pages	8
Journal	Nature Communications
Volume	6
DOIs	https://doi.org/10.1038/ncomms9120
Publication status	Published - 11 Sept 2015

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10.1038/ncomms9120Licence: CC BY

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@article{3d9974c7dbce4099a2efc2f415434964,

title = "Nano-socketed nickel particles with enhanced coking resistance grown in situ by redox exsolution",

abstract = "Metal particles supported on oxide surfaces are used as catalysts for a wide variety of processes in the chemical and energy conversion industries. For catalytic applications, metal particles are generally formed on an oxide support by physical or chemical deposition, or less commonly by exsolution from it. Although fundamentally different, both methods might be assumed to produce morphologically and functionally similar particles. Here we show that unlike nickel particles deposited on perovskite oxides, exsolved analogues are socketed into the parent perovskite, leading to enhanced stability and a significant decrease in the propensity for hydrocarbon coking, indicative of a stronger metal–oxide interface. In addition, we reveal key surface effects and defect interactions critical for future design of exsolution-based perovskite materials for catalytic and other functionalities. This study provides a new dimension for tailoring particle–substrate interactions in the context of increasing interest for emergent interfacial phenomena.",

author = "Dragos Neagu and Tae-Sik Oh and Miller, {David Noel} and Herv{\'e} M{\'e}nard and Bukhari, {Syed Munawer} and Gamble, {Stephen Richard} and Gorte, {Raymond J.} and Vohs, {John M.} and Irvine, {John Thomas Sirr}",

note = "DN thanks the European Project METSAPP (FCH JU-GA 278257) for funding. We also thank NSF and EPSRC for Materials World Network funding ref EP/J018414/1. ",

year = "2015",

month = sep,

day = "11",

doi = "10.1038/ncomms9120",

language = "English",

volume = "6",

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journal = "Nature Communications",

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T1 - Nano-socketed nickel particles with enhanced coking resistance grown in situ by redox exsolution

AU - Neagu, Dragos

AU - Oh, Tae-Sik

AU - Miller, David Noel

AU - Ménard, Hervé

AU - Bukhari, Syed Munawer

AU - Gamble, Stephen Richard

AU - Gorte, Raymond J.

AU - Vohs, John M.

AU - Irvine, John Thomas Sirr

N1 - DN thanks the European Project METSAPP (FCH JU-GA 278257) for funding. We also thank NSF and EPSRC for Materials World Network funding ref EP/J018414/1.

PY - 2015/9/11

Y1 - 2015/9/11

N2 - Metal particles supported on oxide surfaces are used as catalysts for a wide variety of processes in the chemical and energy conversion industries. For catalytic applications, metal particles are generally formed on an oxide support by physical or chemical deposition, or less commonly by exsolution from it. Although fundamentally different, both methods might be assumed to produce morphologically and functionally similar particles. Here we show that unlike nickel particles deposited on perovskite oxides, exsolved analogues are socketed into the parent perovskite, leading to enhanced stability and a significant decrease in the propensity for hydrocarbon coking, indicative of a stronger metal–oxide interface. In addition, we reveal key surface effects and defect interactions critical for future design of exsolution-based perovskite materials for catalytic and other functionalities. This study provides a new dimension for tailoring particle–substrate interactions in the context of increasing interest for emergent interfacial phenomena.

AB - Metal particles supported on oxide surfaces are used as catalysts for a wide variety of processes in the chemical and energy conversion industries. For catalytic applications, metal particles are generally formed on an oxide support by physical or chemical deposition, or less commonly by exsolution from it. Although fundamentally different, both methods might be assumed to produce morphologically and functionally similar particles. Here we show that unlike nickel particles deposited on perovskite oxides, exsolved analogues are socketed into the parent perovskite, leading to enhanced stability and a significant decrease in the propensity for hydrocarbon coking, indicative of a stronger metal–oxide interface. In addition, we reveal key surface effects and defect interactions critical for future design of exsolution-based perovskite materials for catalytic and other functionalities. This study provides a new dimension for tailoring particle–substrate interactions in the context of increasing interest for emergent interfacial phenomena.

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VL - 6

SP - 1

EP - 8

JO - Nature Communications

JF - Nature Communications

M1 - 8120

ER -

Nano-socketed nickel particles with enhanced coking resistance grown in situ by redox exsolution

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Energy Materials Discovery: Energy Materials Discovery Characterisation and Application

Structuring the Future: Structuring the Future - Underpinning world-leading science in EaStCHEM through cutting edge characterisation

Upgrade Small Equipment Base: Small items of research equipment at the University of St Andrews. Supporting a new generation of physical sciences research

John Thomas Sirr Irvine

Data underpinning:Nano-socketed nickel particles with enhanced coking resistance grown in situ by redox exsolution

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Nano-socketed nickel particles with enhanced coking resistance grown in situ by redox exsolution

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Energy Materials Discovery: Energy Materials Discovery Characterisation and Application

Structuring the Future: Structuring the Future - Underpinning world-leading science in EaStCHEM through cutting edge characterisation

Upgrade Small Equipment Base: Small items of research equipment at the University of St Andrews. Supporting a new generation of physical sciences research

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John Thomas Sirr Irvine

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Data underpinning:Nano-socketed nickel particles with enhanced coking resistance grown in situ by redox exsolution

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