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Title of Journal: Int J Miner Metall Mater

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Abbravation: International Journal of Minerals, Metallurgy, and Materials

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University of Science and Technology Beijing

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DOI

10.1016/0040-1951(85)90032-0

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ISSN

1869-103X

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Thermodynamic study and methanothermal temperature

Authors: Parham Roohi Reza Alizadeh Esmaeil Fatehifar
Publish Date: 2016/02/27
Volume: 23, Issue: 3, Pages: 339-347
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Abstract

Nanostructured molybdenum carbide Mo2C was successfully prepared from molybdenum trioxide MoO3 using methanothermal temperatureprogrammed reaction Thermodynamic analysis indicated that in presence of methane the formation of Mo2C from MoO3 occurs through the path of MoO3 → MoO2 → Mo2C The carburized MoO3 was characterized using Xray diffraction XRD CHNS/O analysis Brunauer–Emmett–Teller BET analysis and fieldemission scanning electron microscopy FESEM At final carburization temperatures of 700 and 800°C and at methane contents ranging from 5vol to 20vol Mo2C was the only solid product observed in the XRD patterns The results indicated that the effect of methane content on the formation of the carbide phase is substantial compared with the effect of carburization time Elemental analysis showed that at a final temperature of 700°C the carbon content of carburized MoO3 is very close to the theoretical carbon mass percentage in Mo2C At higher carburization temperatures excess carbon was deposited onto the surface of Mo2C Highsurfacearea Mo2C was obtained at extremely low heating rates this highsurfacearea material is a potential electrocatalyst

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