Molybdenum carbide synthesized by mechanical activation an inert medium

The paper presents a technique for the synthesis of molybdenum carbide using mechanical activation of carbon black, which was impregnated with a 20% aqueous solution of ammonium heptamolybdate (AHM) using the incipient wetness technique, in an inert medium at a 100 g acceleration of milling bodies f...

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Veröffentlicht in:Journal of alloys and compounds 2017-03, Vol.698, p.1018-1027
Hauptverfasser: Baklanova, O.N., Vasilevich, A.V., Lavrenov, A.V., Drozdov, V.A., Muromtsev, I.V., Arbuzov, A.B., Тrenikhin, М.V., Sigaeva, S.S., Temerev, V.L., Gorbunova, O.V., Likholobov, V.A., Nizovskii, A.I., Kalinkin, A.V.
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Sprache:eng
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Zusammenfassung:The paper presents a technique for the synthesis of molybdenum carbide using mechanical activation of carbon black, which was impregnated with a 20% aqueous solution of ammonium heptamolybdate (AHM) using the incipient wetness technique, in an inert medium at a 100 g acceleration of milling bodies for 30 min. The mechanically activated carbide-containing composites were calcined in an inert medium at 800 °C. The composites were examined by a range of physical methods. It was shown that the mechanically activated composite consists of molybdenum carbide, iron oxide and iron carbide (about 4–8% according to AES-ICP). The phase addition method was used to determine the quantitative content of Мо2С, which was equal to 7.2 wt% in the calcined sample. Catalytic testing of mechanically activated molybdenum carbide in the partial oxidation of methane showed that the carbide-containing catalyst provides a 48–60% conversion of methane and an 83–85% selectivity for the target product (CO). •Technique for the synthesis of carbide-containing composites by mechanical activation in inert atmosphere were developed.•Optimal parameters of mechanical activation were chosen: acceleration of milling bodies and MA time.•Quantitative estimation of molybdenum carbide content was made.•Catalytic testing of molybdenum carbide in the partial oxidation of methane was performed.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2016.12.186