| 均分散胶体的研究 I. 钇化合物均分散胶体的形成 |
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| 引用本文： | 王光信,赵长贵,陈宗淇,张玉苓. 均分散胶体的研究 I. 钇化合物均分散胶体的形成[J]. 物理化学学报, 1991, 7(6): 655-661. DOI: 10.3866/PKU.WHXB19910605 |
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| 作者姓名： | 王光信 赵长贵 陈宗淇 张玉苓 |
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| 作者单位： | Department of Applied Chemistry, Qingdao Institute of Chemical Technology, Qingdao 266042; Institute of Physics, Chinese Academy of Sciences |
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| 摘 要： | 已制备了球形、尺寸分布很窄的粒子组成的YOHCO_3·H_2O及Y_2O_3均分散胶体。用电子显微镜、红外光谱及电导率等方法对这些均分散体系的组成及形成过程进行了初步探讨。
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| 关 键 词： | 均分散胶体 YOHCO3• H2O Y2O3制备 |
| 收稿时间： | 1990-05-09 |
| 修稿时间： | 1990-10-28 |
Study on Monodispersed Colloid I. Formation of Monodispersed Colloidal Yttrium Compound System |
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| Wang Guangxin Zhao Changgui Chen Zongqi. Study on Monodispersed Colloid I. Formation of Monodispersed Colloidal Yttrium Compound System[J]. Acta Physico-Chimica Sinica, 1991, 7(6): 655-661. DOI: 10.3866/PKU.WHXB19910605 |
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| Authors: | Wang Guangxin Zhao Changgui Chen Zongqi |
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| Affiliation: | Department of Applied Chemistry, Qingdao Institute of Chemical Technology, Qingdao 266042; Institute of Physics, Chinese Academy of Sciences |
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| Abstract: | Monodispersed colloidal YOHCO_3·H_2O and Y_2O_3 systems consisting of spherical particles of narrow size distribution were obtained. The formation of those monodispersed colloidal systems was primarily investigated by using the techniques including transmision and scanning electron mieroseopy,IR spectroscopy and electrical conductivity. The change of electrical conductivity in the course of aging YCl_3 solution with urea revealed that the slow decomposition of urea and release of CO_3~(2-) at elevated temperature controlled the generation of pricipitation phase and provided necessary condition for formation of the monodispersed system.The transformation of calcining monodispersed powders of YOHCO_3·H_2O was observed through SEM. During the process of calcining YOHCO_3·H_2O at 850 ℃, the powders were melten first before formation of monodispersed spheres of Y_2O_3. |
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| Keywords: | Monodispersed colloid 3•',') " >YOHCO3•2O',') " >H2O 2O3',') " >Y2O3 Preparation |
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