无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2022, Vol. 54 ›› Issue (11): 79-82.doi: 10.19964/j.issn.1006-4990.2022-0067

• 研究与开发 • 上一篇    下一篇

真空加热法制备立方晶型三氧化二锑

唐淑贞(),江金龙,余小光   

  1. 湖南化工职业技术学院化学工程学院,湖南 株洲 412000
  • 收稿日期:2022-04-11 出版日期:2022-11-10 发布日期:2022-11-23
  • 作者简介:唐淑贞(1981— ),女,副教授,研究方向为资源循环利用与纳米材料制备;E-mail:631837490@qq.com
  • 基金资助:
    锰锌矿业重金属污染综合防治湖南省工程实验室开放基金资助项目(MXKF201904)

Preparation of cubic antimony trioxide by vacuum heating method

TANG Shuzhen(),JIANG Jinlong,YU Xiaoguang   

  1. College of Chemical Engineering,Hunan Chemical Vocatinal Technology College,Zhuzhou 412000,China
  • Received:2022-04-11 Published:2022-11-10 Online:2022-11-23

摘要:

以湿法制得的斜方晶型三氧化二锑(Sb2O3)为原料,采用真空加热法制备了立方晶型的三氧化二锑。采用X射线衍射分析(XRD)和扫描电镜(SEM)对产物进行了表征,研究了体系压强、加热温度、加热时间对三氧化二锑晶型与粒度的影响。结果表明:当加热温度升高时,三氧化二锑由斜方晶型逐渐转变为立方晶型;但当加热温度升高至450 ℃时,已经全部转变为立方晶型的三氧化二锑中,部分立方晶型又开始转变为斜方晶型;随着加热温度的升高,样品团聚程度增加,样品的平均粒度逐渐增大。随着体系压强的下降和加热时间的延长,三氧化二锑由斜方晶型逐渐转变成立方晶型。但体系压强的下降,会增大样品团聚程度以及样品的平均粒度;加热时间延长,样品的平均粒度也逐渐增大。

关键词: Sb2O3, 真空加热, 立方晶型

Abstract:

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

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