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应用科学学报 ›› 1993, Vol. 11 ›› Issue (4): 366-370.

• 研究简报 • 上一篇    

氧氯化锆溶液恒沸过程中产物聚合过程的电镜观察

黄岳祥, 郭存济, 谢贻芬   

  1. 上海科学技术大学
  • 收稿日期:1991-12-25 修回日期:1992-09-18 出版日期:1993-12-31 发布日期:1993-12-31

ELECTRON MICROSCOPIC OBSERVATION OF POLYMERIZATION PROCESS OF HYDROLYSIS PRODUCTS IN ZrOCl2 SOLUTIONS DURING BOILING

HUANG YUEXIANG, GUO CUNJI, XIE YIFEN   

  1. Shanghai University of Science and Technology
  • Received:1991-12-25 Revised:1992-09-18 Online:1993-12-31 Published:1993-12-31

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摘要： 近年来,采用氧氯化锆(ZrOCl2·8H2O)水解法来生成氧化锆超微粒子作为一种较新的制备技术正日益受到人们的重视[1~5].其特点是以价格低廉的氧氯化锆为原料,通过长时间恒沸来获得分布均匀、无团聚的亚微米级氧化锆超微粒子.

关键词: ZrO2, 水解, 超微粒子, ZrOCl2ܮH2O, 聚合

Abstract: The polymerization process of hydrolysis products in ZrOCl2 solutions under boiling condition has been investigated by tha electron microscopic tachnique. The results show that there exists a palymarization process in ZrOCl2 solutions with different concentrations. First a number of crystal nuclei are formal which grow gradually to definite-sized, definite-shaped multimorphous particles through the process of polymerization. Tha urea additive has been proved to promote the polymerization process. The synthesized particle size mostly depends on the concentrations of the initial ZrOCl2 solution and the boiling time. The higher the concentration and the longer the boiling time, the larger the obtained particle size. So the particle size can be controlled by selecting the suitable initial concentration and boiling time.

Key words: ultrafine particle, hydrolysis, polymerization, ZrOCl2ܮH2O, ZrO2