Comparison between the synthesis in molybdenum and antimony oxides system by high-temperature treatmentand high-energy ball milling

摘要

The interactions between MoO_3and Sb_2O_3orα-Sb_2O_4taking place in the solid state in air during high-temperature as well as mechanochemical treatments havebeen investigated. The high-energy ball milling of MoO_3with Sb_2O_3converts α-Sb_3to β-3and leads toformation of Sb_2MoO_6andSb_4Mo_(10)O_(31)phases. They arethe final products of thermal synthesis in an inert atmo-sphere but not in air. The solid solution of MoO_3in β-Sb_2O_4was obtained in high-temperature reaction of MoO_3with Sb_2O-3or α-Sb_2O_4as well as by milling of mixtureMoO_3/α-Sb_2O_4for 14 h. The milling resulted in higherthan 3 mol% solubility of MoO_3in β-Sb_2O_4. The con-structed phase diagram of MoO_3-α-Sb_2O_4system ispresented.