Molybdenum carbide synthesized by mechanical activation an inert medium

摘要

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 degrees 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 Mo2C, 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). (C) 2016 Elsevier B.V. All rights reserved.