Inorganic Chemicals Industry >
Preparation of cubic antimony trioxide by vacuum heating method
Received date: 2022-04-11
Online published: 2022-11-23
Cubic Sb2O3 was prepared by vacuum heating method using orthorhombic Sb2O3 obtained by wet process as raw material.The effects of the system pressure，heating temperature and heating time on Sb2O3 crystal form and grain size were investigated by X-ray diffraction（XRD） and scanning electron microscopy（SEM）.The results showed that Sb2O3 was gradually changed from orthorhombic crystal to cubic crystal when the heating temperature was increased.When the heating temperature was rised to 450 ℃，some of cubic Sb2O3 began to change to orthorhombic Sb2O3 again.The agglomeration degree and average particle size of the sample were increased with increasing heating temperature.With the decrease of the system pressure and the extension of the heating time，Sb2O3 was gradually transformed from orthorhombic crystal to cubic crystal.However，the decrease of the system pressure would increase the degree of sample agglomeration and the average particle size of the sample.With the prolonged heating time，the average particle size of the sample was gradually increased.
Key words： Sb2O3; vacuum heating method; cubic crystal
Shuzhen TANG , Jinlong JIANG , Xiaoguang YU . Preparation of cubic antimony trioxide by vacuum heating method[J]. Inorganic Chemicals Industry, 2022 , 54(11) : 79 -82 . DOI: 10.19964/j.issn.1006-4990.2022-0067
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