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 ›› 2016, Vol. 48 ›› Issue (9): 40-.

• 论文 • 上一篇    下一篇

晶种法制备亚微米纺锤形碳酸钙

吴风风,孔凡滔,吴秋芳   

  1. 华东理工大学超细粉末国家工程研究中心,上海 200237
  • 出版日期:2016-09-10 发布日期:2016-09-18

Synthesis of sub-micron spindle-shaped calcium carbonate by seeding method

 WU  Feng-Feng, KONG  Fan-Tao, WU  Qiu-Fang   

  1. National Engineering Research Centre of Ultrafine Powder,East China University of
    Science and Technology,Shanghai 200237,China
  • Online:2016-09-10 Published:2016-09-18

摘要: 采用晶种作为晶形控制剂,采用碳化法制备了亚微米纺锤形碳酸钙。研究了晶种添加量、碳化起始温度等因素对碳酸钙颗粒形貌的影响。采用透射电镜(TEM)、BET法比表面积测试等对样品的形貌和性能进行了表征。结果表明:晶种在碳化过程中具有异相成核作用,提供成核位点,使生成的碳酸钙微晶在其表面生长成纺锤形。在碳化起始温度为30~35 ℃、晶种添加量为20%(质量分数)条件下,可制备单个颗粒粒径为400~600 nm、长径比为4的亚微米纺锤形碳酸钙。

关键词: 亚微米碳酸钙, 纺锤形, 晶种, 制备

Abstract: The sub-micron spindle shaped calcium carbonate was prepared with seed crystal by gas-liquid carbonation method. Factors,such as seed crystal additive amount and initial carbonation temperature,affecting the morphology of calcium carbonate were studied.The morphology and properties of products were analyzed by TEM and BET etc..Results showed that seed crystals provided the nucleation sites and the CaCO3 crystals grew on the surface of seed crystals.The sub-micron spindle shaped CaCO3 with major axis of 400~600 nm and aspect ratio up to 4 can be prepared at the initial temperature of 30~35 ℃ and with seed crystal mass fraction of 20%.

Key words: sub-micron CaCO3, spindle shape, seed crystal, synthesis

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