Synthesis of Al2(MoO4)3 by Two Distinct Processes, Hydrothermal Reaction and Solid-State Reaction

Al2(MoO4)3 could be synthesized using two different methods, the traditional solid-state reaction and the hydrothermal reaction with post-heating. For preparation by the solid-state reaction, the starting materials were Al(OH)3 and MoO3. TG-DTA results suggested that the reaction temperature of the solid-state reaction should be more than 973 K for crystallization of Al2(MoO4)3. In contrast, the hydrothermal technique required crystallization at lower temperatures. SEM photographs indicate that while the former yields larger particles, the latter yields finer and well-shaped particles. It is hoped that Al2(MoO4)3 obtained by this method will find applications in the manufacture of ceramic devices.