...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Crystal Growth >Hydrothermal synthesis of lead titanate from complexed precursor solutions
【24h】

Hydrothermal synthesis of lead titanate from complexed precursor solutions

机译：从络合物前体溶液中水热合成钛酸铅

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Lead titanate was synthesized at 200℃ from chelated titanium and lead in alkaline, aqueous solution. Complexing agents included H_2O_2 and EDTA, with KOH and KF as mineralizers. After synthesis in hydrothermal autoclaves, the products were examined by field emission scanning electron microscopy (FESEM) and powder X-ray diffraction. Samples prepared with low Ti ( < 8 mmolal) and high KOH ( > 1.2 m) concentrations were found to contain dendritic powder combined with a small fraction of square platelets varying in size from 50-200 μm. X-ray diffraction confirmed that the yellow powders were single-phase, tetragonal PbTiO_3. The conditions under which these platelets were formed (200℃, 200 psi) are mild compared to conventional hydrothermal routes, which require > 500℃ and > 10 000 psi to grow crystals of comparable size.
机译：钛酸铅在200℃下由螯合的钛和铅在碱性水溶液中合成。络合剂包括H_2O_2和EDTA，其中KOH和KF为矿化剂。在水热高压釜中合成后，通过场发射扫描电子显微镜（FESEM）和粉末X射线衍射检查产物。发现以低Ti（<8 mmolal）和高KOH（> 1.2 m）浓度制备的样品包含树突状粉末以及小部分正方形血小板，尺寸从50-200μm不等。 X射线衍射证实黄色粉末为单相四方PbTiO_3。与常规水热途径相比，这些血小板的形成条件（200℃，200 psi）温和，后者需要> 500℃和> 10000 psi才能生长出可比较大小的晶体。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号