Facile synthesis of high surface area molybdenum nitride and carbide

Aaron Roy; Alexey Serov; Kateryna Artyushkova; Eric L. Brosha; Plamen Atanassov; Tim L. Ward

doi:10.1016/j.jssc.2015.05.007

Facile synthesis of high surface area molybdenum nitride and carbide

Aaron Roy, Alexey Serov, Kateryna Artyushkova, Eric L. Brosha, Plamen Atanassov, Tim L. Ward

Energy Storage and Conversion Manufactur

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19 Scopus citations

Abstract

The synthesis of high surface area γ-Mo₂N and α-Mo₂C is reported (116 and 120 m²/g) without the temperature programmed reduction of MoO₃. γ-Mo₂N was prepared in an NH₃-free synthesis using forming gas (7 at% H₂, N₂-balance) as the reactive atmosphere. Three precursors were studied ((NH₄)₆Mo₇O₂₄·4H₂O, (NH₄)₂ Mg(MoO₄)₂, and MgMoO₄) along with the sacrificial support method (SSM) as a means of reducing the particle size of Mo₂N and Mo₂C. In situ X-ray diffraction (XRD) studies were carried out to identify reaction intermediates, the temperature at which various intermediates form, and the average domain size of the Mo₂N products. Materials were synthesized in bulk and further characterized by XRD, HRTEM, XPS, and BET.

Original language	English
Pages (from-to)	232-238
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	228
DOIs	https://doi.org/10.1016/j.jssc.2015.05.007
State	Published - May 30 2015

Funding

This work was supported by Los Alamos National Laboratory .

Keywords

Catalysis
Fuel-cell materials
High surface area molybdenum nitride
X-Ray photoelectron spectroscopy
XRD

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10.1016/j.jssc.2015.05.007

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title = "Facile synthesis of high surface area molybdenum nitride and carbide",

abstract = "The synthesis of high surface area γ-Mo2N and α-Mo2C is reported (116 and 120 m2/g) without the temperature programmed reduction of MoO3. γ-Mo2N was prepared in an NH3-free synthesis using forming gas (7 at% H2, N2-balance) as the reactive atmosphere. Three precursors were studied ((NH4)6Mo7O24·4H2O, (NH4)2 Mg(MoO4)2, and MgMoO4) along with the sacrificial support method (SSM) as a means of reducing the particle size of Mo2N and Mo2C. In situ X-ray diffraction (XRD) studies were carried out to identify reaction intermediates, the temperature at which various intermediates form, and the average domain size of the Mo2N products. Materials were synthesized in bulk and further characterized by XRD, HRTEM, XPS, and BET.",

keywords = "Catalysis, Fuel-cell materials, High surface area molybdenum nitride, X-Ray photoelectron spectroscopy, XRD",

author = "Aaron Roy and Alexey Serov and Kateryna Artyushkova and Brosha, {Eric L.} and Plamen Atanassov and Ward, {Tim L.}",

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doi = "10.1016/j.jssc.2015.05.007",

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journal = "Journal of Solid State Chemistry",

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T1 - Facile synthesis of high surface area molybdenum nitride and carbide

AU - Roy, Aaron

AU - Serov, Alexey

AU - Artyushkova, Kateryna

AU - Brosha, Eric L.

AU - Atanassov, Plamen

AU - Ward, Tim L.

PY - 2015/5/30

Y1 - 2015/5/30

N2 - The synthesis of high surface area γ-Mo2N and α-Mo2C is reported (116 and 120 m2/g) without the temperature programmed reduction of MoO3. γ-Mo2N was prepared in an NH3-free synthesis using forming gas (7 at% H2, N2-balance) as the reactive atmosphere. Three precursors were studied ((NH4)6Mo7O24·4H2O, (NH4)2 Mg(MoO4)2, and MgMoO4) along with the sacrificial support method (SSM) as a means of reducing the particle size of Mo2N and Mo2C. In situ X-ray diffraction (XRD) studies were carried out to identify reaction intermediates, the temperature at which various intermediates form, and the average domain size of the Mo2N products. Materials were synthesized in bulk and further characterized by XRD, HRTEM, XPS, and BET.

AB - The synthesis of high surface area γ-Mo2N and α-Mo2C is reported (116 and 120 m2/g) without the temperature programmed reduction of MoO3. γ-Mo2N was prepared in an NH3-free synthesis using forming gas (7 at% H2, N2-balance) as the reactive atmosphere. Three precursors were studied ((NH4)6Mo7O24·4H2O, (NH4)2 Mg(MoO4)2, and MgMoO4) along with the sacrificial support method (SSM) as a means of reducing the particle size of Mo2N and Mo2C. In situ X-ray diffraction (XRD) studies were carried out to identify reaction intermediates, the temperature at which various intermediates form, and the average domain size of the Mo2N products. Materials were synthesized in bulk and further characterized by XRD, HRTEM, XPS, and BET.

KW - Catalysis

KW - Fuel-cell materials

KW - High surface area molybdenum nitride

KW - X-Ray photoelectron spectroscopy

KW - XRD

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U2 - 10.1016/j.jssc.2015.05.007

DO - 10.1016/j.jssc.2015.05.007

M3 - Article

AN - SCOPUS:84930226148

SN - 0022-4596

VL - 228

SP - 232

EP - 238

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

ER -

Facile synthesis of high surface area molybdenum nitride and carbide

Abstract

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Keywords

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