Molybdenum carbide synthesized by mechanical activation an inert medium
| Autor: | Likholobov Vladimir A, A. B. Arbuzov, O. N. Baklanova, A. V. Vasilevich, S. S. Sigaeva, I. V. Muromtsev, Alexander V. Kalinkin, М.V. Тrenikhin, A. I. Nizovskii, V. A. Drozdov, O.V. Gorbunova, A. V. Lavrenov, V. L. Temerev |
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| Rok vydání: | 2017 |
| Předmět: |
Inert
Materials science Ammonium heptamolybdate Mechanical Engineering Metallurgy Metals and Alloys Iron oxide 02 engineering and technology Carbon black 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Carbide law.invention Catalysis chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials law Materials Chemistry Calcination Partial oxidation 0210 nano-technology |
| Zdroj: | Journal of Alloys and Compounds. 698:1018-1027 |
| ISSN: | 0925-8388 |
| Popis: | 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 Мо 2 С, 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). |
| Databáze: | OpenAIRE |
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