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首页> 外文期刊>Journal of Crystal Growth >Preparation and characterization of superfine ammonium perchlorate (AP) crystals through ceramic membrane anti-solvent crystallization
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Preparation and characterization of superfine ammonium perchlorate (AP) crystals through ceramic membrane anti-solvent crystallization

机译：陶瓷膜反溶剂结晶法制备超高氯酸铵（AP）晶体及其表征

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摘要

In this paper, a novel ceramic membrane anti-solvent crystallization (CMASC) method was proposed for the safe and rapid preparation ammonium perchlorate (AP) crystals, in which the acetone and ethyl acetate were chosen as solvent and anti-solvent, respectively. Comparing with the conventional liquid anti-solvent crystallization (LASC), CMASC which successfully introduces ceramic membrane with regular pore structure to the LASC as feeding medium, is favorable to control the rate of feeding rate and, therefore, to obtain size and morphology controllable AP. Several kinds of micro-sized AP particles with different morphology were obtained including polyhedral-like, quadrate-like to rod-like. The effect of processing parameters on the crystal size and shape of AP crystals such as volume ratio of anti-solvent to solvent, feeding pressure and crystallization temperature were investigated. It is found that higher volume ratio of anti-solvent to solvent, higher feeding pressure and higher temperature result in smaller particle size. Scaning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the resulting AP crystals. The nudeation and growth kinetic of the resulting AP crystals were also discussed.
机译：提出了一种安全，快速制备高氯酸铵（AP）晶体的陶瓷膜抗溶剂结晶法（CMASC）。在该方法中，分别以丙酮和乙酸乙酯为溶剂。与传统的液体反溶剂结晶法（LASC）相比，CMASC成功地将具有规则孔结构的陶瓷膜引入到LASC中作为进料介质，有利于控制进料速度，从而获得尺寸和形貌可控的AP 。获得了多种具有不同形态的微米级AP颗粒，包括多面体状，方形，棒状。研究了工艺参数对AP晶体晶体尺寸和形状的影响，如反溶剂与溶剂的体积比，进料压力和结晶温度。发现较高的抗溶剂与溶剂的体积比，较高的进料压力和较高的温度导致较小的粒度。扫描电子显微镜（SEM）和X射线衍射（XRD）用于表征所得的AP晶体。还讨论了所得AP晶体的裸化和生长动力学。

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  • 来源
    《Journal of Crystal Growth》 |2009年第21期|4575-4580|共6页
  • 作者

    Zhenye Ma; Cheng Li; Rujun Wu; Rizhi Chen; Zhenggui Gu;

  • 作者单位

    College of Chemistry and Environment Science, Nanjing Normal University, Nanjing 210097, PR China State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, PR China;

    State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, PR China;

    College of Chemistry and Environment Science, Nanjing Normal University, Nanjing 210097, PR China;

    State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, PR China;

    College of Chemistry and Environment Science, Nanjing Normal University, Nanjing 210097, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    A1. crystal structure; A2. growth from solutions; B1. ammonium perchlorate (AP); B3. ceramic membrane anti-solvent crystallization (CMASC);

    机译：A1。晶体结构A2。解决方案的增长;B1。高氯酸铵（AP）;B3。陶瓷膜抗溶剂结晶（CMASC）;

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