| 固相反应法制备系列K2La2Ti3O10 |
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| 引用本文： | 张莉莉,张维光,杨娟,陆路德,杨绪杰,汪信. 固相反应法制备系列K2La2Ti3O10[J]. 材料科学与工程学报, 2005, 23(2): 181-184 |
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| 作者姓名： | 张莉莉 张维光 杨娟 陆路德 杨绪杰 汪信 |
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| 作者单位： | 南京理工大学材料化学实验室,江苏,南京,210094;淮阴师范学院化学系,江苏,淮安,223001;江苏大学材料科学与工程学院,江苏,镇江,212013;南京理工大学材料化学实验室,江苏,南京,210094 |
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| 基金项目： | 江苏省自然科学基金 , 江苏省博士创新基金 |
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| 摘 要： | 通过固相反应法合成了一系列不同尺寸的钙钛矿型层状化合物KLa2Ti3O10考察了原料TiO2粒径对固相反应速率及产物尺寸、形貌的影响,得到了不同粒径下原料的最佳配比;以XRD,TEM等手段进行表征,研究制备过程可能的反应历程.结果表明:降低原料粒径,固相反应速率加快、温度降低,有利于合成小尺寸、比表面积大(可达11.83m2·g-1)的层状K2La2Ti3O10.
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| 关 键 词： | 层状镧钛酸盐 原料粒径 形貌 反应历程 |
| 文章编号： | 1004-793X(2005)02-0181-04 |
| 修稿时间： | 2004-05-10 |
Synthesis of Series of Layered Lanthanum Titanate |
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| ZHANG Li-li,ZHANG Wei-guang,YANG Juan,LU Lu-de,YANG Xu-jie,WANG Xin. Synthesis of Series of Layered Lanthanum Titanate[J]. Journal of Materials Science and Engineering, 2005, 23(2): 181-184 |
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| Authors: | ZHANG Li-li ZHANG Wei-guang YANG Juan LU Lu-de YANG Xu-jie WANG Xin |
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| Abstract: | Perovskite-type layered lanthanum titanate powders with different particle size were fabricated by solid-state reaction of K 2CO 3, La(NO 3) 3 and TiO 2. The influence of the particle size of the starting material TiO 2 on the velocity of the solid-state reaction and the morphology of the resulting products were studied. It is found that small-sized TiO 2 can fabricate reaction speed and lead to the formation of smaller-sized lanthanum titanate with larger surface area. At the same time, XRD method was used to investigate the mechanism of the reaction. A possible mechanism is proposed. |
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| Keywords: | layered lanthanum titanate particle size morphology reaction mechanism |
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