Intrinsic Ligand Effect Governing the Catalytic Activity of Pd Oxide Thin Films

Natalia Martin; Maxime Van den Bossche; Anders Hellman; Henrik Gronbeck; Can Hakanoglu; Johan Gustafson; Sara Blomberg; Niclas Johansson; Zhi Liu; Stephanus Axnanda; Jason F. Weaver; Edvin Lundgren

doi:10.1021/cs5010163

Intrinsic Ligand Effect Governing the Catalytic Activity of Pd Oxide Thin Films

Natalia Martin, Maxime Van den Bossche, Anders Hellman, Henrik Gronbeck, Can Hakanoglu, Johan Gustafson, Sara Blomberg, Niclas Johansson, Zhi Liu, Stephanus Axnanda, Jason F. Weaver, Edvin Lundgren

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Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

Sammanfattning

High-pressure X-ray photoelectron spectroscopy, mass spectrometry, and density functional theory calculations have been combined to study methane oxidation over Pd(100). The measurements reveal a high activity when a two-layer PdO(101) oriented film is formed. Although a one-layer PdO(101) film exhibits a similar surface structure, no or very little activity is observed. The calculations show that the presence of an oxygen atom directly below the coordinatively unsaturated Pd atom in the two-layer PdO(101) film is crucial for efficient methane dissociation, demonstrating a ligand effect that may be broadly important in determining the catalytic properties of oxide thin films.

Originalspråk	engelska
Sidor (från-till)	3330-3334
Tidskrift	ACS Catalysis
Volym	4
Nummer	10
DOI	https://doi.org/10.1021/cs5010163
Status	Published - 2014

Ämnesklassifikation (UKÄ)

Atom- och molekylfysik och optik (Här ingår: Kemisk fysik, kvantoptik)

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10.1021/cs5010163

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@article{cdff6454057d4f088cc3b86406a33765,

title = "Intrinsic Ligand Effect Governing the Catalytic Activity of Pd Oxide Thin Films",

abstract = "High-pressure X-ray photoelectron spectroscopy, mass spectrometry, and density functional theory calculations have been combined to study methane oxidation over Pd(100). The measurements reveal a high activity when a two-layer PdO(101) oriented film is formed. Although a one-layer PdO(101) film exhibits a similar surface structure, no or very little activity is observed. The calculations show that the presence of an oxygen atom directly below the coordinatively unsaturated Pd atom in the two-layer PdO(101) film is crucial for efficient methane dissociation, demonstrating a ligand effect that may be broadly important in determining the catalytic properties of oxide thin films.",

keywords = "heterogeneous catalysis, methane oxidation, palladium, PdO, (root 5 x, root 5)",

author = "Natalia Martin and {Van den Bossche}, Maxime and Anders Hellman and Henrik Gronbeck and Can Hakanoglu and Johan Gustafson and Sara Blomberg and Niclas Johansson and Zhi Liu and Stephanus Axnanda and Weaver, {Jason F.} and Edvin Lundgren",

year = "2014",

doi = "10.1021/cs5010163",

language = "English",

volume = "4",

pages = "3330--3334",

journal = "ACS Catalysis",

issn = "2155-5435",

publisher = "The American Chemical Society (ACS)",

number = "10",

}

TY - JOUR

T1 - Intrinsic Ligand Effect Governing the Catalytic Activity of Pd Oxide Thin Films

AU - Martin, Natalia

AU - Van den Bossche, Maxime

AU - Hellman, Anders

AU - Gronbeck, Henrik

AU - Hakanoglu, Can

AU - Gustafson, Johan

AU - Blomberg, Sara

AU - Johansson, Niclas

AU - Liu, Zhi

AU - Axnanda, Stephanus

AU - Weaver, Jason F.

AU - Lundgren, Edvin

PY - 2014

Y1 - 2014

N2 - High-pressure X-ray photoelectron spectroscopy, mass spectrometry, and density functional theory calculations have been combined to study methane oxidation over Pd(100). The measurements reveal a high activity when a two-layer PdO(101) oriented film is formed. Although a one-layer PdO(101) film exhibits a similar surface structure, no or very little activity is observed. The calculations show that the presence of an oxygen atom directly below the coordinatively unsaturated Pd atom in the two-layer PdO(101) film is crucial for efficient methane dissociation, demonstrating a ligand effect that may be broadly important in determining the catalytic properties of oxide thin films.

AB - High-pressure X-ray photoelectron spectroscopy, mass spectrometry, and density functional theory calculations have been combined to study methane oxidation over Pd(100). The measurements reveal a high activity when a two-layer PdO(101) oriented film is formed. Although a one-layer PdO(101) film exhibits a similar surface structure, no or very little activity is observed. The calculations show that the presence of an oxygen atom directly below the coordinatively unsaturated Pd atom in the two-layer PdO(101) film is crucial for efficient methane dissociation, demonstrating a ligand effect that may be broadly important in determining the catalytic properties of oxide thin films.

KW - heterogeneous catalysis

KW - methane oxidation

KW - palladium

KW - PdO

KW - (root 5 x

KW - root 5)

U2 - 10.1021/cs5010163

DO - 10.1021/cs5010163

M3 - Article

SN - 2155-5435

VL - 4

SP - 3330

EP - 3334

JO - ACS Catalysis

JF - ACS Catalysis

IS - 10

ER -

Intrinsic Ligand Effect Governing the Catalytic Activity of Pd Oxide Thin Films

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