A facile and reliable route to prepare highly dispersive ammonium dimolybdate uniform crystals from commercial molybdenum oxide

作者：Zhang, Jun^*; Guo, Yanhui; Lu, Weiwei; Guo, Xuming; Xu, Mingchen; Guo, Hongbo

来源：Journal of Industrial and Engineering Chemistry, 2012, 18(5): 1824-1827.

DOI：10.1016/j.jiec.2012.04.013

• Commercial molybdenum oxide
• Ammonium dimolybdate
• Crystal
• Preparation

Highly dispersive ammonium dimolybdate crystals with high purity have been prepared through reaction-evaporation-crystallization united route using commercial molybdenum oxide as starting material. The as-prepared ammonium dimolybdate uniform crystals were systematically characterized by X-ray powder diffraction, transmission-reflection optical microscope, Fourier transform infrared spectroscopy and TG-DSC thermal analysis. The Fsss grain diameter, loose packed density, and crystal-grain size distribution were also measured by the Malvern laser particle sizer. These collective characterization and analysis reveal that the ammonium dimolybdate grains are non-agglomerated uniform crystals with well normal distribution and geometric shape. The average Fsss diameter, d((0.5)) and loose packed density are 433.316 mu m, 470.981 mu m and 1.592 g cm(-3), respectively, which could well meet the quality requirements for the subsequent production of molybdenum powders.

• 出版日期2012-9-25
• 单位河南大学