Zr-based Laves phases with nitride/hydride ions for ammonia synthesis

Yu Cao; Zefeng Wei; Walid Al Maksoud; Rohit Rai; Yoji Kobayashi; Hiroshi Kageyama

doi:10.1016/j.solidstatesciences.2023.107331

Zr-based Laves phases with nitride/hydride ions for ammonia synthesis

Yu Cao, Zefeng Wei, Walid Al Maksoud, Rohit Rai, Yoji Kobayashi^*, Hiroshi Kageyama^*

^*Corresponding author for this work

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

1 Scopus citations

Abstract

Early transition metal-based intermetallic compounds, such as ZrV₂, ZrMn₂, and ZrCr₂, can reversibly absorb large amounts of hydrogen and are of great interest for hydrogen storage. The dissociative hydrogen chemisorption can proceed easily on the surface, allowing the rapid formation of intermetallic hydrides. In this study, we present the results of initial NH₃ activity tests conducted on various Zr-based AB₂-type intermetallic compounds, free of precious transition metals and rare earth metals. A dissociative hydrogen chemisorption together with nitrogen storage proceeds on AB₂-type Laves phase intermetallic compounds accompanied by a lattice expansion. The formed intermetallic nitride hydride ZrCr₂N_0.4H_1.4 exhibits stable catalytic activity as an ammonia synthesis catalyst.

Original language	English (US)
Article number	107331
Journal	Solid State Sciences
Volume	145
DOIs	https://doi.org/10.1016/j.solidstatesciences.2023.107331
State	Published - Nov 2023

Bibliographical note

Publisher Copyright:
© 2023 Elsevier Masson SAS

Keywords

Ammonia synthesis catalysis
Hydrides
Intermetallic compounds
Laves phase
Mixed anions
Nitrides

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

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10.1016/j.solidstatesciences.2023.107331

Cite this

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title = "Zr-based Laves phases with nitride/hydride ions for ammonia synthesis",

abstract = "Early transition metal-based intermetallic compounds, such as ZrV2, ZrMn2, and ZrCr2, can reversibly absorb large amounts of hydrogen and are of great interest for hydrogen storage. The dissociative hydrogen chemisorption can proceed easily on the surface, allowing the rapid formation of intermetallic hydrides. In this study, we present the results of initial NH3 activity tests conducted on various Zr-based AB2-type intermetallic compounds, free of precious transition metals and rare earth metals. A dissociative hydrogen chemisorption together with nitrogen storage proceeds on AB2-type Laves phase intermetallic compounds accompanied by a lattice expansion. The formed intermetallic nitride hydride ZrCr2N0.4H1.4 exhibits stable catalytic activity as an ammonia synthesis catalyst.",

keywords = "Ammonia synthesis catalysis, Hydrides, Intermetallic compounds, Laves phase, Mixed anions, Nitrides",

author = "Yu Cao and Zefeng Wei and {Al Maksoud}, Walid and Rohit Rai and Yoji Kobayashi and Hiroshi Kageyama",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Masson SAS",

year = "2023",

month = nov,

doi = "10.1016/j.solidstatesciences.2023.107331",

language = "English (US)",

volume = "145",

journal = "Solid State Sciences",

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T1 - Zr-based Laves phases with nitride/hydride ions for ammonia synthesis

AU - Cao, Yu

AU - Wei, Zefeng

AU - Al Maksoud, Walid

AU - Rai, Rohit

AU - Kobayashi, Yoji

AU - Kageyama, Hiroshi

PY - 2023/11

Y1 - 2023/11

N2 - Early transition metal-based intermetallic compounds, such as ZrV2, ZrMn2, and ZrCr2, can reversibly absorb large amounts of hydrogen and are of great interest for hydrogen storage. The dissociative hydrogen chemisorption can proceed easily on the surface, allowing the rapid formation of intermetallic hydrides. In this study, we present the results of initial NH3 activity tests conducted on various Zr-based AB2-type intermetallic compounds, free of precious transition metals and rare earth metals. A dissociative hydrogen chemisorption together with nitrogen storage proceeds on AB2-type Laves phase intermetallic compounds accompanied by a lattice expansion. The formed intermetallic nitride hydride ZrCr2N0.4H1.4 exhibits stable catalytic activity as an ammonia synthesis catalyst.

AB - Early transition metal-based intermetallic compounds, such as ZrV2, ZrMn2, and ZrCr2, can reversibly absorb large amounts of hydrogen and are of great interest for hydrogen storage. The dissociative hydrogen chemisorption can proceed easily on the surface, allowing the rapid formation of intermetallic hydrides. In this study, we present the results of initial NH3 activity tests conducted on various Zr-based AB2-type intermetallic compounds, free of precious transition metals and rare earth metals. A dissociative hydrogen chemisorption together with nitrogen storage proceeds on AB2-type Laves phase intermetallic compounds accompanied by a lattice expansion. The formed intermetallic nitride hydride ZrCr2N0.4H1.4 exhibits stable catalytic activity as an ammonia synthesis catalyst.

KW - Ammonia synthesis catalysis

KW - Hydrides

KW - Intermetallic compounds

KW - Laves phase

KW - Mixed anions

KW - Nitrides

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U2 - 10.1016/j.solidstatesciences.2023.107331

DO - 10.1016/j.solidstatesciences.2023.107331

M3 - Article

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SN - 1293-2558

VL - 145

JO - Solid State Sciences

JF - Solid State Sciences

M1 - 107331

ER -

Zr-based Laves phases with nitride/hydride ions for ammonia synthesis

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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