| 超细钙钛矿复合氧化物的制备和性能研究 |
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| 引用本文： | 陈敏,王幼文,郑小明.超细钙钛矿复合氧化物的制备和性能研究[J].无机化学学报,2003,19(10):1145-1149. |
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| 作者姓名： | 陈敏 王幼文 郑小明 |
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| 作者单位： | 1. 浙江大学西溪校区化学系,杭州,310028
2. 浙江大学玉泉校区分析测试中心,杭州,310027 |
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| 基金项目： | 国家自然科学基金(No.) |
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| 摘 要： | 钙钛矿型复合氧化物(ABO_3)具有稳定的结构和较好的热稳定性,是一类被视为能够替代传统贵金属控制汽车尾气净化催化剂的新型三效催化剂。但其主要问题是比表面大小,一般小于10m~2·g~(-1),因此其催化活性的提高受到一定的限制。近几十年
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| 关 键 词： | 钙钛矿型复合氧化物 催化剂 制备 性能 超细离子 晶粒 汽车尾气 净化 |
| 修稿时间： | 2003年4月15日 |
Preparation and Properties of Ultra Fine LaMnO3 and LaCoO3 Perovskite Compounds |
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| CHEN Min WANG You-Wen ZHENG Xiao-Ming.Preparation and Properties of Ultra Fine LaMnO3 and LaCoO3 Perovskite Compounds[J].Chinese Journal of Inorganic Chemistry,2003,19(10):1145-1149. |
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| Authors: | CHEN Min WANG You-Wen ZHENG Xiao-Ming |
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| Abstract: | In this paper, three different methods, such as amorphous-complexometry, co-precipitation, and sol-gel have been used for preparation of LaMnO3 and LaCoO3 perovskite compounds. The particle size, disperse and reductive capability were characterized by XRD, TEM, TPR technologies. The results showed that all the LaMnO3 and LaCoO3 perovskite compounds are nano-sized. Comparing the two seizes of LaMnO3 and LaCoO3 perovskite compounds, the sample prepared by sol-gel method showed good catalytic activity and in good distribution condition in LaMnO3 series, and the sample prepared by amorphous-complexometry method shows the best properties in LaCoO3 series. |
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| Keywords: | particle size perovskite compounds prepared method ultra fine |
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