Production of magnesium molybdate using corrosion reaction of molybdenum and magnesium in hydrogen peroxide

Magnesium molybdate (MgMoO4) were prepared by corrosion reaction of metallic molybdenum and magnesium in hydrogen peroxide. The hydrogen peroxide was acidified due to the corrosion of molybdenum, and then magnesium dissolved quickly when added to the solution. It was found that MgMoO4 powders were prepared by calcinating at more than 973 K. The MgMoO4 powder which obtained after the calcination at 973 K had the diameters from 0.4 μm to 9.3 μm. For comparison, magnesium molybdate was prepared by a solid-state reaction method using molybdenum oxide and magnesium oxide as raw materials. It was identified that the powder which was calcinated at 1073 K was MgMoO4 and the particle size was 2.1 μm to 26.1 μm.