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
研究与开发

基于复合熔盐低温制备片状α-氧化铝的研究

  • 徐敬尧 ,
  • 周小丽 ,
  • 孙敬会 ,
  • 曹阿林 ,
  • 卿培林
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  • 1.百色学院材料科学与工程学院,广西 百色 533000
    2.百色学院化学与环境工程学院,广西 百色 533000
    3.百色学院生态铝产业学院,广西 百色 533000
    4.广西壮族自治区铝基新材料工程研究中心,广西 百色 533000
    5.桂西区域生态环境分析与污染控制重点实验室,广西 百色 533000
徐敬尧(1980— ),男,博士,讲师,主要从事无机粉体材料和液态金属净化技术研究;E-mail:3290873881@qq.com

收稿日期: 2022-04-22

  网络出版日期: 2023-02-16

基金资助

广西高校中青年教师科研基础能力提升项目(2019KY0757);广西高校中青年教师科研基础能力提升项目(2020KY19020);广西高校中青年教师科研基础能力提升项目(2020KY19023);百色市科学研究与技术开发计划(百科20221464)

Study on preparation of flake α-alumina based on mixed molten salt at low temperature

  • Jingyao XU ,
  • Xiaoli ZHOU ,
  • Jinghui SUN ,
  • Alin CAO ,
  • Peilin QING
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  • 1. School of Materials Science and Engineering,Baise university,Baise 533000,China
    2. School of Chemical and Environmental Engineering,Baise university,Baise 533000,China
    3. College of Ecological Aluminum Industry,Baise University,Baise 533000,China
    4. Engineering Research Center of Advanced Aluminum Matrix Materials of Guangxi Province,Baise 533000,China
    5. Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi,Baise 533000,China

Received date: 2022-04-22

  Online published: 2023-02-16

摘要

基于KCl-NaCl-AlF3熔盐体系,采用氢氧化铝为铝源、以氯化钾(KCl)和氯化钠(NaCl)复合熔盐为反应介质、以氟化铝(AlF3)为添加剂制备片状α-Al2O3。通过X射线衍射和扫描电子显微镜表征方法研究了氟化铝含量、煅烧温度和保温时间对片状氧化铝形貌和晶型的影响。结果表明,当氟化铝添加量(氟化铝与氢氧化铝的质量比)为5%、煅烧温度为750 ℃、保温时间为180 min时,可获得片状α-Al2O3,其径向尺寸约为5.1 μm,径厚比达18,分散性良好。

本文引用格式

徐敬尧 , 周小丽 , 孙敬会 , 曹阿林 , 卿培林 . 基于复合熔盐低温制备片状α-氧化铝的研究[J]. 无机盐工业, 2023 , 55(2) : 73 -78 . DOI: 10.19964/j.issn.1006-4990.2022-0233

Abstract

Based on KCl-NaCl-AlF3 molten salt system,the flake α-Al2O3 was prepared with aluminum hydroxide as aluminum source,potassium chloride and sodium chloride mixed molten salt as reaction medium and aluminum fluoride as additive.Furthermore,the influences of aluminum fluoride content,calcining temperature and holding time on morphology and crystal structure of the flake alumina were studied respectively by characterization methods of scanning electron microscope and X-ray diffraction.The results showed that the flake α-Al2O3 with radial size of 5.1 μm,diameter-thickness ratio of 18 and good dispersibility was obtained by calcining at 750 ℃ for 180 min with mass ratio of aluminum fluoride and aluminum hydroxide of 5%.

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