Reaction pathway in the MoO3+Mg+C reactive mixtures
Source abstract
Abstract
Abstract Fundamental aspects of a novel combinational approach to reduce molybdenum trioxide by magnesium and carbon were studied. Temperature profile analysis, DTA/TG, XRD, SEM/EDS methods were applied to investigate the mechanism of the reduction reaction. It was shown that in the early stages of process carbon reduces the MoO3 to MoO2. Highly exothermic magnesium reduction of MoO2 starts at 700 °C and nucleation of Mo particles took place in liquid magnesium. It was shown that the last transformation in this reacting system, MoO2 + C, starts at 800-900 °C. Depending on the reaction conditions, e.g. temperature, reduction of MoO2 may yield either molybdenum or molybdenum carbide, with enhanced microstructure.
Source: openaire · Quality: candidate unverified · Source record ↗
References (28)
Show source-provided references
1. Braithwaite · 1994
2. Effect of die compaction pressure on densification behavior of molybdenum powders10.1016/j.ijrmhm.2005.10.014 ↗
3. Densification behavior of Mo nanopowders prepared by mechanochemical processing10.1016/j.jallcom.2008.01.149 ↗
4. Microstructure and Mechanical Properties of Molybdenum Alloys Doped with ZrB2 Particles10.4028/www.scientific.net/AMR.160-162.1828 ↗
5. Investigation of solid solution hardening in molybdenum alloys10.1016/j.ijrmhm.2010.05.010 ↗
6. A 21st Century Perspective on Molybdenum Powder Production By Hydrogen Reduction10.4028/www.scientific.net/MSF.561-565.447 ↗
7. Consolidation behavior of Mo powder fabricated from milled Mo oxide by hydrogen-reduction10.1016/j.jallcom.2006.12.039 ↗
8. Kinetic Studies on Hydrogen Reduction of MoO3 and Morphological Analysis of Reduced Mo Powder10.1007/s11663-008-9152-8 ↗
9. Mechanisms of the hydrogen reduction of molybdenum oxides10.1016/S0263-4368(02)00029-X ↗
10. Hydrogen Absorption and Diffusion in Bulk α-MoO310.1021/jp9017212 ↗
11. In situ X-ray analysis of MoO3 reduction10.1002/crat.200410312 ↗
12. Mechanochemical synthesis of Mo–Cu nanocomposite powders10.1016/j.jallcom.2010.11.019 ↗
13. Utilization of mill scale and recycled MoO3 from spent acid for economic synthesis of nanocrystalline intermetallic Fe-Mo alloys10.1016/j.jallcom.2008.10.018 ↗
14. Preparation of nanosized Mo powder by microwave plasma chemical vapor deposition method10.1016/S0254-0584(99)00007-3 ↗
15. A novel route to the synthesis of nanosized metallic molybdenum at moderate temperature and its catalytic properties10.1016/j.materresbull.2003.10.020 ↗
16. Kinetics and Mechanism of Carbothermic Reduction of MoO3 to Mo2C10.1016/S0925-8388(97)00212-0 ↗
17. Saghafi · Int J Refract Met Hard Mater · 2010
18. A novel route to nanosized molybdenum boride and carbide and/or metallic molybdenum by thermo-synthesis method from MoO3, KBH4, and CCl410.1016/S0022-4596(02)00044-0 ↗
19. A study on preparation of Mo–30W alloy by aluminothermic co-reduction of mixed oxides10.1016/j.jallcom.2004.10.053 ↗
20. Studies on molybdenum extraction
21. Metallothermic reduction of MoO3 through making Ni-Mo alloys by the ESR method10.1016/j.ijrmhm.2004.07.001 ↗
22. The synthesis of nanostructured molybdenum under self-propagating high-temperature synthesis mode10.1016/j.matchemphys.2004.08.005 ↗
23. Reduction of MoO3 by Zn: Reducer migration phenomena10.1016/j.ijrmhm.2010.05.005 ↗
24. Zinc reduction of MoO3 in a self-propagating high-temperature synthesis process10.1007/BF02915058 ↗
25. Direct Reduction of Ammonium Molybdate to Elemental Molybdenum by Combustion Reaction10.1016/j.cej.2011.01.080 ↗
26. Self-sustaining reduction of MoO3 by the Mg-C mixture10.1016/j.mseb.2010.05.028 ↗
27. Thermodynamic of SHS: modern approach
28. Growth rate and microstructure of Mo film by chemical-vapour-deposition10.2320/matertrans1989.37.283 ↗